EN307 Cruise Report

ACKNOWLEDGEMENTS

We would like to thank the captain and crew of the R/V ENDEAVOR for an enjoyable and productive cruise; their professionalism was greatly appreciated. We also thank the US GLOBEC Georges Bank Program for supporting this cruise, with research support provided by NOAA and shiptime provided by NSF. Support for the bio-optical oceanographic research conducted on this cruise was provided by an award from the ONR Young Investigator Program.

This report was prepared by Charles Greene, Peter Wiebe, Heidi Sosik, Mark Benfield, and Ann Bucklin with assistance from others in the Scientific Party. This cruise was sponsored by the National Science Foundation and the National Oceanographic and Atmospheric Administration.

TABLE OF CONTENTS

INTRODUCTION 2

NARRATIVE 3

INDIVIDUAL REPORTS 6

1.0 Processes Regulating the Recruitment of Calanus finmarchicus from the Gulf of Maine to Georges Bank 6

1.1 Introduction 6

1.2 Methods 7

1.2.1 Broad-scale survey 7

1.2.2 MOCNESS stations 8

1.3 Results 8

1.3.1 Broad-scale survey 8

1.3.1.1 Multi-frequency acoustics 8

1.3.1.2 Video plankton recorder (VPR) 16

1.3.2 MOCNESS stations 17

2.0 Spatio-Temporal Variability of Bio-Optical Properties in the Gulf of Maine 19

2.1 Introduction 19

2.2 Methods 19

2.3 Results 20

3.0 Distribution and relative abundance of Pseudocalanus spp. in the Gulf of Maine 27

3.1 Introduction 27

3.2 Methods 28

3.3 Results 28

CRUISE PARTICIPANTS 29

Scientific Personnel 29

Officers and Crew 29

APPENDIX 1. Event Log for R/V ENDEAVOR Cruise 307. 30

APPENDIX 2. MOCNESS tow details. 33

APPENDIX 3. BIOMAPER II event log. 34

INTRODUCTION

R/V ENDEAVOR Cruise 307 was conducted as a U.S. GLOBEC process cruise to examine autumn conditions in the Gulf of Maine relevant to ecosystem processes on Georges Bank. The major scientific objectives of the cruise included:

1. Conducting broad-scale surveys to map the spatial distribution of Calanus finmarchicus and its major invertebrate predators in the deep basins of the Gulf of Maine,

2. Collecting MOCNESS samples of Calanus finmarchicus for molecular studies of its diapause physiology and population genetics,

3. Conducting broad-scale surveys to map the spatial distribution of bio-optical properties in the Gulf of Maine,

The cruise was laid out as a series of tracklines traversing the major basins in the Gulf of Maine with turning points marking a change in the direction of ship as data were being collected (Figure 1). The original turning points were modified during the cruise in response to sea and work related conditions. The trackline had us leaving Woods Hole (turning point #1), working first in Georges Basin (turning points 4-7), then moving into Jordan Basin (turning points 8,9), and after a short stop in Portland ME to allow some participants to leave the vessel, moving into Wilkinson Basin (turning points 10-21). In addition to the along-track data collection, time was alloted each day for a CTD cast between 1000 and 1400 hours to accommodate the needs of the Bio-optical Group lead by Heidi Sosik and one or two MOCNESS tows.

Summaries of the projects supported by this cruise are presented in the sections following the cruise narrative.

NARRATIVE

The R/V ENDEAVOR departed Woods Hole on cruise EN-307 at 19:00 on 8 October 1997 (Figure 2). The sky was clear and the winds were light during departure. All scientific events conducted during the cruise, beginning with the ship's departure, can be found in the cruise report event log (see Appendix 1).

The early part of the first evening was spent in Vineyard Sound practicing deployment of the BIOMAPER II (BIO-optical Multiple-frequency Acoustic and Physical Environmental Recorder), a large tow body carrying a variety of bio-optical, acoustical, and physical remote-sensing instruments. After we were satisfied with the BIOMAPER II's performance, we changed course and headed for our first station at the western end of Franklin Basin, a southwest to northeast-oriented extension of Georges Basin.

We arrived at station 1 during the late morning of 9 October. Activities at this station included two unsuccessful CTD casts (CTD 1,2) because the rosette water bottle release mechanism was not working properly, a successful CTD cast (CTD 3), and deployment of a tethered, free-fall vertically-profiling spectral radiometer. When these activities were completed, BIOMAPER II was deployed and systems were checked. After several deployments and recoveries, all systems were operational and we began collecting BIOMAPER II data along a survey trackline to the second station at the southwestern edge of the main portion of Georges Basin.

We arrived at station 2 during the early morning of 10 October. BIOMAPER II continued to collect data at the surface while an oblique MOCNESS tow (M-01-001) was conducted. After the MOCNESS tow was completed, we continued along our trackline toward the third station with BIOMAPER II continuing to collect data. Our first towyos with BIOMAPER II were conducted at this time.

We arrived at station 3 during the late morning of 10 October. BIOMAPER II was recovered and then typical mid-day station activities were conducted. These activities included a CTD cast (CTD 4), deployment of the tethered free-fall spectral radiometer, and an oblique MOCNESS tow (M-01-002). After completion of station 3, we continued northward along our survey trackline. Barometric pressure dropped during the day, the wind steadily increased and the skies were cloudy (Figure 3). As the trackline turned from northward to westward, we deployed BIOMAPER II and collected data as we steamed towards station 4 (Figure 2). While the seas did not reach heights that interfered with the data acquisition, our course deviated from the planned survey trackline due to 30 knot winds from the south blowing the ship towards the wire from which BIOMAPER II was being towyoed. The course change allowed us to continue towyoing BIOMAPER II until station 4. At station 4, BIOMAPER II continued to collect data at the surface while an oblique MOCNESS tow (M-01-003) was conducted. After the MOCNESS tow was completed, we continued towyoing BIOMAPER II on our survey trackline towards station 5.

During the late morning of 11 October, we arrived at station 5. Barometric pressure rose during the day and the winds became light (Figure 3). BIOMAPER II remained in the water collecting data while the typical mid-day station activities were conducted. These activities again included a CTD cast (CTD 5) and deployment of the tethered free-fall spectral radiometer. After completion of station 5 activities, we changed course and steamed northward towards Jordan Basin. Initially, we collected data with BIOMAPER II towed at the surface. At 15:00, we began towyoing BIOMAPER II along our survey trackline for Jordan Basin. Towyoing continued until we reached station 6.

We arrived at station 6 in Jordan Basin shortly after mid-night on 12 October. At this station, BIOMAPER II remained at the surface collecting data while an oblique MOCNESS tow (M-01-004) was conducted. After the MOCNESS tow, towyoing of BIOMAPER II resumed until shortly after sunrise (07:44) when the system was recovered to work on its bio-optical instruments.

At 08:55, we arrived at station 7 and conducted an oblique MOCNESS tow (M-01-005). This was followed by a CTD cast (CTD 6) and deployment of the tethered free-fall spectral radiometer. After the mid-day station activities, BIOMAPER II was redeployed. We resumed towyoing BIOMAPER II for the remainder of the day as we surveyed Jordan Basin. As we headed west from Jordan Basin just after midnight on October 13, we conducted a procedure to calibrate BIOMAPER II's compass and made measurements of background acoustic noise. This involved steaming the ship in three consecutive tight circles. At 02:45, we recovered BIOMAPER II and steamed to Portland to drop off four members of the scientific party. At mid-day on a mild fall day with a shoreline lined with trees showing their fall colors, we arrived in Portland harbor where a chartered boat met the R/V ENDEAVOR and ferried the departing party to shore.

After departing Portland, we steamed toward Wilkinson Basin. During the early afternoon of 13 October at station 8, a CTD cast (CTD 7) and the tethered free-fall spectral radiometer were deployed. When these station activities were completed, we resumed steaming towards Wilkinson Basin. At 17:05, BIOMAPER II was redeployed, and we began our survey of Wilkinson Basin at turning point 11 (Figure 1). BIOMAPER II was towyoed along the survey trackline as we steamed towards station 9 (Figure 2).

At midnight, we arrived at station 9 where MOCNESS tow (M-01-006) was conducted while BIOMAPER II continued to collect data at the surface. After the MOCNESS tow was completed at 02:20, we resumed towyoing BIOMAPER II along the survey trackline until mid-morning. We arrived at station 10 during the late morning of 14 October and conducted a CTD cast (CTD 8) and deployed the tethered free-fall spectral radiometer. Once completed, we resumed towyoing BIOMAPER II along the survey trackline. During mid-afternoon, we arrived at station 11. BIOMAPER II continued to collect data at the surface while an oblique MOCNESS tow (M-01-007) was conducted. After the MOCNESS tow was completed at 16:28, we resumed towyoing BIOMAPER II along the survey trackline until mid-morning of the next day.

We arrived at station 12 at 11:15 on October 15. BIOMAPER II was recovered to allow calibration of its bio-optical sensors. We then deployed the tethered free-fall spectral radiometer and conducted a CTD cast (CTD 9). BIOMAPER II was redeployed at 14:15, and we resumed towyoing along our survey trackline.

Right after midnight (00:30) on October 16, we arrived at station 13 and while BIOMAPER II collected data at the surface, an oblique MOCNESS tow (M-01-008) was conducted. After the MOCNESS tow was completed, we resumed towyoing BIOMAPER II along the survey trackline until early morning of the next day (05:45) when the broad-scale survey of the Gulf of Maine deep basins was completed.

Other than the moderate, 6 - 9' seas associated with the brief windy period on October 10, we experienced exceptionally good weather, with light winds and 2 -4' seas throughout the broad-scale survey portion of the cruise. This allowed us to complete the survey with about 12 hours to spare. We used this extra time to conduct a series of observations on soliton propagation in the region. These solitons are probably generated in the vicinity of Georges Bank when standing lee waves, formed at the edge of the Bank during the off-Bank tidal flow, are released during the changing tide.

To observe the solitons, we returned to the region of Wilkinson Basin near station 10 where such solitons had been observed previously. The winds increased during the day to 15 to 25 kts and the seas reached 6 - 9'. Windrows of macroalgae, associated with Langmuir circultion, were observed throughout the day. BIOMAPER II was towed at the surface towards station 13. We arrived at station 13 at approximately noon on 16 October and conducted a CTD cast (CTD 10) and deployed the tethered free-fall spectral radiometer. We then resumed towing BIOMAPER II in search of solitons. A soliton, consisting of a packet of about eight internal waves, was detected in the late afternoon while steaming back towards Georges Bank. The surface manifestation of this soliton could be seen on the ships' radar, and thus the ship's watch could track the soliton's location from the bridge. A description of the work that ensued is provided in the acoustic results section below. After a series of passes over the soliton, a final MOCNESS tow (M-01-009) was taken which cut across the soliton. After this pass was completed, we recovered the MOCNESS and BIOMAPER II and steamed for Woods Hole.

The cruise ended when the ship tied up to the Woods Hole dock about noon on 17 October.

INDIVIDUAL REPORTS

1.0 Processes Regulating the Recruitment of Calanus finmarchicus from the Gulf of Maine to Georges Bank (Principal Project).

(C.H. Greene, M.C. Benfield, and P.H. Wiebe)

1.1 Introduction

Calanus finmarchicus dominates zooplankton secondary production on Georges Bank during spring. The Georges Bank Calanus population is derived from diapausing populations in the deep basins of the Gulf of Maine and the Scotian Shelf east of the Bank. It is hypothesized that processes which regulate the survivorship and supply of Calanus from diapausing populations in the deep basins of the Gulf of Maine determine this copepod species' annual production on Georges Bank. To test this hypothesis, research is being conducted 1.) to determine what processes regulate the abundance and survivorship of the diapausing Calanus populations in these deep basins, and 2.) to determine how physical and biological processes interact to seed Georges Bank with recruits from these basins each year.

Acoustic and video remote-sensing methods are used to survey diapausing populations of Calanus in Georges, Jordan, and Wilkinson Basins of the Gulf of Maine. Broad-scale survey cruises conducted in early and late autumn during 1998 and 1999 will be used to estimate survivorship of the diapausing Calanus and the scale-dependent spatial coupling of Calanus and its principal invertebrate predators - the euphausiid, Meganyctiphanes norvegica, and the siphonophore, Nanomia cara.

Results from field studies and feeding experiments will focus on quantifying the relative contribution of predation to the overall mortality of the diapausing Calanus population. The results from field studies also will be used as input to coupled physical-biological models to examine how physical transport processes in the Gulf of Maine interact with Calanus's seasonal and diel vertical migration behaviors to seed Georges Bank with new recruits during winter.

1.2 Methods

1.2.1 Broad-scale survey

A broad-scale survey of the Gulf of Maine deep basins was conducted from October 8 - 17, 1997. The survey track included multiple transect lines in Georges, Jordan, and Wilkinson Basins (Figure 2). This initial survey was designed as a pilot study to test our methods prior to the first full field season in 1998.

The survey was conducted using a high-speed, deep-towed system, BIOMAPER II (BIOlogical Multiple-frequency Acoustic Platform and Physical Environmental Remote-sensing system - Figure 4), configured with multiple-frequency (43 kHz, 120 kHz, 200 kHz, 420 kHz, and 1000 kHz) acoustics, a video plankton recorder (VPR), an environmental sensing package (pressure, temperture, conductivity, fluorescence, transmissometry), and several bio-optical sensors (down- and upwelling spectral radiometers, spectrally matched attenuation and absorption meters). The acoustic frequencies were chosen to bracket the transition from the Rayleigh to geometric scattering regions for the target species under investigation. A down- and up-looking transducer operated at each frequency to provide more complete coverage of the water column when the instrument was towyoed. Echo integration was conducted at 30-second intervals to provide volume-backscattering data at all five frequencies. Split-beam data were collected at the four lower frequencies. All raw acoustic data were recorded on digital audio tape (DAT), while the processing for echo integration was carried out in real time.

The VPR mounted on BIOMAPPER sampled a volume of 2.43 liters min-1. It had an imaging volume with a height of 6.5 mm, a width of 8.0 mm, and a depth of field of 13.0 mm. All video images were recorded on SVHS tape for post-cruise processing at WHOI. GPS data were synchronized with the VPR signal and stamped on the video time code.

1.2.2 MOCNESS stations

During the broad-scale survey cruise of the Gulf of Maine deep basins, 1-m2 MOCNESS tows were conducted at three stations in Georges Basin, two stations in Jordan Basin, and four stations in Wilkinson Basin (Figure 2, Appendix II). The MOCNESS was equipped with nine nets made of 335 m nylon nitex mesh. Splits from the MOCNESS samples were preserved in formalin for ground-truthing and inter-comparisons with the BIOMAPER II acoustics and VPR data, and preserved in alcohol or frozen in liquid nitrogen for molecular studies of copepod population genetics by Ann Bucklin (University of New Hampshire), and diapause physiology, by Patrick Hassett (University of Ohio). Additional detail about the latter work is given below.

1.3 Results

1.3.1 Broad-scale survey

1.3.1.1 Multi-frequency acoustics

The multi-frequency acoustics, bio-optical (including VPR), and physical oceanographic data were collected during nine deployments of BIOMAPER II throughout the Gulf of Maine. Two major acoustic sections were obtained in Georges Basin, one line extended from Georges Basin to Jordan Basin, two lines were taken in Jordan Basin, and four lines were taken in Wilkinson Basin (Figure 5). The last line involved a special study of a soliton (See section below). The total trackline distance along which data were collected was 1017 km (549 nm - Table 1). During the deployments, data were collected in a down-looking mode with BIOMAPER II towed just below the surface, in a down and up-looking mode while towed horizontally at some sub-surface depth, or towyoed from the surface to within 10 to 30 m of the ocean bottom. As described above, during some periods of BIOMAPER II data acquisition, MOCNESS tows were taken to collect planktonic animals (Figure 2). Aliquots of these samples will be analyzed to produce numbers and size data of the major taxa making up the samples and these data will be used in combination with theoretical models to develop predicted volume backscattering values for comparison with those values observed with BIOMAPER II.

Table 1. Distance of BIOMAPER II Trackline Sections on R/V ENDEAVOR Cruise 307 (7-17 October 1997).

Section Year-day
Start Time
Year-day
End Time
km nm
1 282.885 283.440 126.5 68.3
2 283.848 284.478 82.3 44.5
3 284.628 285.004 85.4 46.1
4 285.092 285.322 42.6 23.0
5 285.531 286.010 96.6 52.2
6 286.728 288.154 280.6 151.5
7 288.237 288.477 55.6 30.0
8 288.631 289.239 126.6 68.4
9 289.296 289.951 120.9 65.3
Total 1017.1 549.2

The instrument systems on BIOMAPER II worked very well with the exception of one of the 43 kHz transducers which suffered an, as yet undefined, electronic hardware failure during the first trackline section and the Environmental Sensing System's (ESS) pressure transducer which gave poor pressure readings until it was repaired during the transit from Jordan Basin to Portland, ME. The software to acquire the data, which was provided by HTI, enabled the simultaneous acquisition of data on five frequencies each with two transducers (one up-looking and one down-looking). Each transducer was allocated 200 1-m depth strata and data were collected in 30 second intervals (averages). A ping cycle for all frequencies and transducers took about 2.5 seconds with a firing sequence of down-looking 43, 120, 200, 420, 1000 kHz and then up-looking 43, 120, 200, 420, 1000 kHz. In addition, the raw data for each ping were recorded on DAT tape for postprocessing of either target strengths or echo-integrations on a different time averaging basis. Each tape recorded two gigabytes of data and a total of 62 tapes were recorded during the cruise.

Post-processing software, which was still under development on the cruise, was used to combine the up-looking and down-looking data for a given frequency and then display the data as color enhanced echogram. During the cruise significant progress was made by Erhan Mutlu in making improvements in the MATLAB code used in the post-processing and it is now possible to create plots of the volume backscattering in the water column shortly after a BIOMAPER II section has been completed.

There are several general observations that result from an initial look at the post-processed acoustic data. Diel vertical migration is evident in the echograms from all three basins with somewhat lower volume backscattering in the surface waters during the day and higher levels in this depth interval at night (Figure 6 ). During the same period, increased scattering occurred at mid-depth levels i.e. 50 to 150 meters during the day which became much weaker or disappeared at night.

There were basin to basin differences in the acoustic structure as well. A distinct layer was present near the bottom in Georges Basin which does not show up in the echograms from Jordan Basin. Such a layer did exist in Wilkinson Basin, but it was not as well formed nor as strong. On the other hand, in Jordan Basin there were many isolated but quite strong targets (perhaps small fish schools) which occurred from just above the bottom (around 240 to 250 m) up to 100 meters depth which were not nearly as evident in the other two basins. Interpretation of these trends in terms of the biological entities present must await the analysis of the VPR video tapes and the MOCNESS samples.

Soliton Experiment: After completing the survey of Wilkinson Basin at Turning Point 21 on 16 October (Figure 1), we began a short study of internal wave packets or solitons which were observed during work in the vicinity of Turning Points 13 and 14. The vessel steamed back towards Turning Point 13 at about 6 kts with BIOMAPER II deployed at about 5 m and operating in the down-looking mode. We arrived at this location about noon and commenced a light profile cast and a CTD cast. During the period of this work, no substantial internal wave activity was observed. Once the station work was completed, we began to steam towards Georges Bank at about 4 kts., because it was a likely source of internal wave activity.

At 1513, the bridge called down to say that they could see strong banding on the radar was which reflected the presence of internal waves. There were about 8 wave crests in the soliton visible on the radar screen. A few minutes later, the acoustic records clearly showed the first crest of the internal wave packet (Figure 7). The radar image of the sea surface manifestation of the soliton together with the acoustic echogram of its internal structure enabled determination of the direction of packet propagation which was approximately 310 degrees. Within 45 minutes, the ENDEAVOR had passed the soliton. The ship's course was reversed and BIOMAPER II was lowered to 50 m depth. This was done to enable the up-looking transducers to provide acoustic measurements right to the sea surface. It took much longer (more than 100 minutes) to return to the front of the soliton because we were steaming in the direction of its propagation which was estimated to be 1 to 1.5 kts. Once past the soliton, BIOMAPER II was lowered to within 30 m of the bottom to get a profile of environmental properties and then brought to the surface before again reversing the ship's course.

The third pass through the internal wave packet was made at 25 to 30 m depth which was where volume backscattering appeared to be most intense in the wave crests on previous tows. About 2009 (42 28.43 N; 68 45.24 W), the radar on the bridge showed that we were again in the soliton and about to enter the second wave trough. On this occasion, the estimate was that the waves were heading on a course of 330 degrees.

Once through the packet, we again returned on a reciprocal course (339 deg true). A fourth pass across a portion of the internal wave packet was done at 6 kts with BIOMAPER II at the surface. About halfway into the wave packet, the ship was slowed to about 2 kts and the 1-m2 MOCNESS was deployed. The net system was shot to 175 m and then nets were opened and closed at 175, 150, 125, 100, 80,60,40,20 and 0 m. With the closing of the last net, the data acquisition of this special experiment was ended, the gear brought onboard, and the ENDEAVOR began its steam back to the port of Woods Hole.

Initial results from the first pass over the soliton provided a very interesting picture of the frequency dependence of the volume backscattering from the wave packet (Figure 7). In the 43 kHz record, most of the energy echoed back to BIOMAPER II came from wave crests and trough close to the surface. At 120 kHz, a deeper structure became evident as proportionately more energy was received. This trend continued with the 200 kHz record where about equal amounts of energy came from the near surface and deeper wave forms, and then with the 420 kHz record where the dominant source of energy came from the deeper wave form. At 1000 kHz, the soliton was also visible, but only near the surface due to the short range of that frequency. Additional work is required to explain this frequency dependence.

Instrumentation improvements: As with any new instrument system, this first scientific cruise of BIOMPAPER II was not without some difficulties. Some problems were identified which have relatively easy solutions. These include:

1) Extending the VPR camera and strobe to position further in front of the BIOMAPER II nose to get around probable avoidance problems. As described in the section on the VPR by M. Benfield, there did seem to be evidence that some of the animals were making move to avoid the region where their picture was taken.

2) There was also some indication in the pitch data displayed on the Bio-engineering computer that pitch values started to be large when vertical velocities exceed 10 m/min. For this and other reasons, the vertical descent and ascent rates should be kept around 5 m/min. Perhaps more importantly, the pitch and roll data need to be logged to a computer file so that these parameters can be examined after a tow has been completed.

3) For a number of situations, it is desirable to collect echo integration data at intervals smaller than 30 seconds. When starting the internal wave study described below, there was an attempt made to average over 10 second intervals. The HTI software, however, developed severe timing problems and eventually the acquisition program failed and the computer system had to be re-booted. HTI is aware of the need to fix this problem. In addition, while the acoustic processing software generally worked well, it was still subject to failures of undetermined origin which may be solved by using a more powerful computer.

4) Some of the difficulties with the HTI data acquisition system may also be related to the Lantastic LAN system used to connect all the computers that are involved in data handling in BIOMAPER II. There is a need to improve the LAN system so that data can be more easily passed from one to the other. There is also a need to put SCSI interfaces in strategic computers so that JAZ drives can be used to move data to computers not on the Network.

5) During the operation of BIOMAPER II, there were times when the oil temperature got close to the perceived upper limit on the hydraulic system for the winch and power pack. The extent to which this is a problem needs to be examined. At the least the winch/power pack should have the vital instrument readouts wired so that the readings can be displayed and recorded by the BIO_Engineering computer.

6) There is also a need for a count-down timer for alerting watch-standers of DAT and video recording tapes that are about to run out. Data were lost because tapes were not exchanged on a timely basis.

7) There is a need for red lights inside the BIOMAPER II van which would allow people to work and read while enabling them to watch the external and VPR monitors with much less glare. Better lighting outside the van is also needed.

A problem of concern, but of uncertain origin, has to do with the volume backscattering anomalies that are evident in the echograms within 10 to 15 meters above and below BIOMAPER II when the system is being towyoed (Figure 8). In regions of the water column where volume backscattering is high, the values within 10 to 15 m of the towed body are enhanced and where volume backscattering is low, the values are depressed. The effect is not apparent when BIOMAPER II is held at a constant depth either near the surface or at some depth below the surface. The effect may have something to do with the towing wire and tow-bar assembly, but it is not clear at this writing how these structures could have an effect on both the up-looking and the down-looking transducers.

1.3.1.2 Video plankton recorder (VPR)

The VPR on BIOMAPER remained operational throughout the entire cruise. It was not possible to view still images from the VPR in real time because the camera was not connected to a region of interest (ROI) extraction system. However, the presence of a video monitor afforded us brief glimpses of abundant taxa as they flashed by at 60 fps. Subsequent examination of an extremely limited subset of the video data was undertaken using a field by field SVHS editing deck. The results indicated that the quality of individual images was superb. The oil sacs, antennual and urosome segments, and prosome details were all clearly visible on Calanus finmarchicus.

The orientations of Calanus suggested that this species may have detected that presence of BIOMAPER II. Some individual copepods had their antennae folded against their sides and occasionally had their urosome folded anteriorly. Examination of four 2.5 -5.0-min sections of tape 49 revealed that the frequency of Calanus in alarm postures was higher than normal postures (Figure 9); however, this difference was not statistically significant (p=0.26, one-tailed t-test). In light of the relatively high incidence of animals in alarm postures, we suggest that the camera and strobe be moved further forward so that they can collect images from an undisturbed volume of water.

The concentrations of C. finmarchicus estimated from these tape sections ranged from 493-1150 copepods m-3. Concentrations were not estimated for other taxa, however, siphonophores, ctenophores, salps, chaetognaths, amphipods, small copepods, and diatom chains were all frequently observed on the video monitor. It is important to emphasize that these results are based on an extremely small sub-sample of the total VPR data set and that we cannot associate these video fields with specific locations and depths until their time codes have been referenced to the other BIOMAPER II data sets.

1.3.2 MOCNESS stations

MOCNESS samples revealed large, qualitative differences in zooplankton composition and distribution among the Gulf of Maine deep basins. Zooplankton composition in Georges Basin exhibited a strong influence from the Slope Water, especially from samples collected at the station nearest Northeast Channel. Calanus was moderately abundant in the deeper waters of the Basin, but diminished in abundance along a west to east gradient. Gelatinous zooplankton, including chaetognaths, ctenophores, scyphomedusae, and salps, were extremely abundant in the Basin. Salps dominated the zooplankton biomass in the surface waters of two of the three MOCNESS stations (stations 2 and 3).

Zooplankton biomass in Jordan Basin was strongly dominated by Calanus. Calanus

was extremely abundant in the deeper waters of the Basin and diminished rapidly at mid-water depths. Zooplankton biomass was sparse at these mid-water depths. Small copepods were abundant in the upper water column.

Zooplankton biomass in Wilkinson Basin was dominated by Calanus, Meganyctiphanes, decapod shrimp, and salps. Calanus was abundant in the deeper and middle portions of the water column and salps were very abundant in the upper water column. The Meganyctiphanes and decapod shrimp were strong migrators, occurring in the deeper waters by day and in the upper 100 m by night.

2.0 Spatio-Temporal Variability of Bio-Optical Properties in the Gulf of Maine (Ancillary Project).

(H.M. Sosik)

2.1 Introduction

Our long term objectives are to characterize spatial and temporal variability in the optical properties related to phytoplankton biomass and productivity in the Georges Bank/Gulf of Maine region. This will be accomplished by a combination of optical measurements made from vertical-profiling moorings, towed vehicles, earth-orbiting satellites, and research vessels conducting conventional station surveys. This cruise is the first field phase of the project, aimed at testing equipment and methods for optical characterization from the BIOMAPER II towed vehicle.

2.2 Methods

We successfully integrated several optical instruments on to BIOMAPER II. These included two Ac-9 dual path spectral absorption and attenuation meters (Wet Labs, Inc.) as well as a spectral downwelling irradiance sensor (OCI-200, Satlantic, Inc.) and a spectral upwelling radiance sensor (OCR-200 series, Satlantic, Inc.). One of the Ac-9's measured whole-water properties and the other was configured with an in-line 0.2 m water filter to assess absorption by dissolved material. The instruments were configured with matching wavelength bands selected to cover the visible spectrum and to reflect those on the SeaWiFS ocean color sensor [Ac-9's: 412, 440, 488, 510, 532, 555, 650, 676, 715 nm; radiometers: 412, 443, 490, 510, 555, 665, 683 nm]. The data acquisition system (designed and assembled at WHOI) for these instruments is based on a subsurface PC-104 and includes 2 serial ports, a 16-channel/16-bit A/D converter, an 8 MB flash disk, and an ethernet adapter for communication with the BIOMAPER II Lantastic network. Through network access this system enabled storage of data files on a desktop PC aboard the ship. In addition to the measurements made from BIOMAPER II, continuous logging of surface spectral irradiance was also carried out with a spectral downwelling irradiance sensor (MVDS, Satlantic, Inc.) mounted above the deck of the ship.

Sampling conducted on the cruise also included water collection and vertical profiles of downwelling irradiance and upwelling radiance with a free-fall spectral radiometer (SPMR/SMSR system, Satlantic, Inc.) deployed away from the ship. This work was conducted at mid-day on each day of the cruise. Water samples were collected for pigment analysis and for estimation of light absorption by particulate and dissolved material. Pigment samples were concentrated on Whatman GF/F filters and extracted in 90% acetone for spectrophotometric estimation of chlorophyll a and phaeopigment concentrations. Spectrophotometric determinations of particle absorption were made on freshly filtered samples (GF/F filters) before and after extraction of phytoplankton pigments with methanol and dissolved absorption was measured on 0.2 m filtrate in 10 cm cuvettes. These spectra were acquired with 1 nm resolution between 300 and 800 nm. The free-fall radiometer has the same spectral bands as the optical heads on BIOMAPER and profiles were conducted between 10:00 and 14:00 local time, immediately prior to or immediately after the CTD/water sampling casts.

Trial measurements with a new Fast Repetition Rate Fluorometer (FastTracka FRRF, Chelsea Instruments) also were made in flow-through mode using the ship's uncontaminated seawater for most of the cruise duration.

2.3 Results

Optical data were successfully collected from BIOMAPER II during each of the deep basin surveys. Initial processing suggests that operation in tow-yo mode proved very successful in mapping distributions of optical properties. An example of the type of data collected in the survey of Wilkinson Basin shows spatial variations in scattering and absorption coefficients associated with water column structure (Figure 10 a-f). Highest values were found near the bottom and in conjunction with phytoplankton patches in the upper 50 m. Absorption by dissolved material exhibited less patchiness than found for particles, but in the blue region of the spectrum, the dissolved component consistently appeared to be the major source of absorption in the mid-water column.

Approximately 80 water samples were analyzed for pigment and high spectral resolution absorption. Water was collected from 10 or 11 depths selected from throughout the water column on 8 CTD/rosette casts (CTD3-10). Pigment concentrations and particle absorption coefficients exhibited subsurface maxima (several g l-1) at a depth of approximately 30 m, with magnitude falling off rapidly below 50 m. Absorption by non-phytoplankton particulates was very low in the surface waters.

Figure 10. Bio-optical and hydrographic data obtained from sensors deployed on BIOMAPER II during three towyo sections across Wilkinson Basin on 13-15 October 1997. a) temperature, b) salinity, c) chlorophyll fluorescence, d) beam attenuation coefficient for particles (cp), e) absorption coefficient for particles (ap), f) absorption coefficient for soluble material (as). Absorption and attenuation coefficients have been corrected for instrumental temperature dependence in the ac-9's and for differences in temperature and salinity from the calibration water. Preliminary corrections for residual scattering effects on absorption estimates have also been applied. The distributions presented here have not been completely corrected for the time lag in as measurements (due to slower flow caused by the in-line particle filter); some distortions are evident particularly during the third transect (when the filter throughput was decreasing).

Figure 10. b) salinity. See Figure 10 a for complete legend.

Figure 10. c) chlorophyll fluorescence. See Figure 10 a for complete legend.

Figure 10. d) beam attenuation coefficient for particles (cp). See Figure 10 a for complete legend.

Figure 10. e) absorption coefficient for particles (ap). See Figure 10 a for complete legend.

Figure 10. f) absorption coefficient for soluble material (as). See Figure 10 a for complete legend.

The free-fall radiometer was successfully deployed at 8 stations with 2-3 replicate vertical profiles conducted during each deployment. Casts with the sensor caps in place were also carried out to allow correction for temperature dependence of dark values. These data will be analyzed to determine vertical profiles of diffuse attenuation coefficients and remote-sensing reflectance.

After some initial problems with data acquisition, several days of data were collected with the FRR fluorometer. Preliminary results show daily variations in photosystem II efficiency, with inhibition evident just after local noon on a sunny day and absent on a cloudy day.

3.0 Distribution and relative abundance of Pseudocalanus spp. in the Gulf of Maine (Ancillary Project)

(Ann Bucklin)

3.1 Introduction

The calanoid copepod species, Pseudocalanus moultoni and P. newmani, differ in geographic distribution and life history - but they cannot be reliably distinguished using morphological characters. Previous studies have concluded that Pseudocalanus is endemic to Georges Bank and Davis (1984: J. Mar. Res. 42:573) considered that the life history of Pseudocalanus sp. may be adapted to ensure retention in the cyclonic gyre patterns over the Bank. A revision of the genus by Frost (1989: Can. J. Zool. 67:525) concluded that two sibling species of Pseudocalanus occur sympatrically on Georges Bank. Both species are thought to be present in waters over the Bank throughout much of the year and may reproduce nearly continuously on the Bank.

The primary source of recruitment may be local reproduction of Bank populations, in contrast to another copepod, Calanus finmarchicus, that repopulates the Bank each spring from surrounding waters. This project identifies and discriminates individuals of the two species by sequence-specific gene amplification by the polymerase chain reaction (PCR). Temporal and spatial distributions of larval, juvenile, and adult female stages of both species are being determined from zooplankton samples of the Georges Bank Study Broadscale Survey cruises. Patterns of distribution will be characterized monthly from January to June of 1997 and 1998 to determine how stage-specific distributions interact with circulation patterns on the Bank. Image analysis will be used to size the individuals of each stage to determine whether rates of growth and development differ between the species.

Collaborative work with bio-physical modelers will be done to place the stage-structured populations of each species in realistic flow fields. It is hypothesized that the life histories of the Pseudocalanus spp. on Georges Bank differ in ways that are suited to the geographic distribution and reproductive ecology of the species. Failure to discriminate the species has prevented our understanding of how zooplankton life histories interact with Bank circulation patterns to determine the likelihood of retention and successful recruitment. Comparison between the life histories of P. moultoni and P. newmani, based on stage-specific distributions in time and space over Georges Bank, will help reveal the mechanisms of population maintenance for each species and determine whether and how the sibling species differ.

3.2 Methods

Samples from all 9 MOCNESS tows were split and preserved in alcohol for molecular analysis. Pseudocalanus moultoni adult females will be sorted from the #7 net, the 50 - 25 m depth interval on most tows. Species-specific PCR amplifications will be used to identify the species. The distribution and relative abundance of female P. moultoni will be determined for the sampled domain. In addition, the DNA sequence of the mitochondrial cytochrome oxidase I (COI) gene will be sequenced for female P. moultoni, and the sequence data will be used for population genetic analysis of the species from the Gulf of Maine and Georges Bank.

MOCNESS samples that consisted predominantly of Calanus finmarchicus were size-sorted by washing the sample through a stacked series of sieves with decreasing mesh sizes (2000 um > 1000 um > 500 um > 333 um). The contents of each sieve were visually checked for Calanus; up to 300 cc of sample volume was removed with a spoon from the sieve with the greatest concentration of Calanus, placed in a plastic bag, wrapped in aluminum foil, and flash-frozen in liquid nitrogen. One size-sorted sample of Calanus was frozen for each MOCNESS tow, for a total of nine samples. These samples of nearly pure C. finmarchicus will be used for molecular genetic analyses. Portions of the samples will be shipped to Dr. Pat Hassett (Miami University, Oxford, Ohio) as he has requested.

3.3 Results

There appeared to be dense populations of Pseudocalanus spp. in some of the MOCNESS samples. Some of the individuals were females with attached egg clusters. These individuals will be targeted for molecular identification, to determine whether one or both of the species are actively reproducing at this time in the Gulf of Maine.

There were dense populations of C. finmarchicus at some locations along the cruise track. The MOCNESS samples at these sites yielded nearly pure samples of the copepod, which will be useful for a suite of molecular and biochemical analyses.

CRUISE PARTICIPANTS

Scientific Personnel

1.Charles Greene Cornell University (Chief Scientist)

2. Louise McGarry Cornell University

3. Bruce Monger Cornell University

4. Karen Fisher Cornell University

5. Mark Benfield Louisiana State University

6. Peter H. Wiebe Woods Hole Oceanographic Institution

7. Tom Austin Woods Hole Oceanographic Institution

8. Richard Arthur Woods Hole Oceanographic Institution

9. Joseph Warren Woods Hole Oceanographic Institution

10. Andrew Seitz Woods Hole Oceanographic Institution

11. Erhan Mutlu Woods Hole Oceanographic Institution

12. Heidi Sosik Woods Hole Oceanographic Institution

13. Anne Canaday Woods Hole Oceanographic Institution

14. Benjamin Halpern Woods Hole Oceanographic Institution

15. Sean Hill University of New Hampshire

16. Sam Johnson Hydroacoustic Technology Incorporated

17. William Fanning University of Rhode Island

Officers and Crew

1. Thomas R. Tyler Master

2. Everett A. McMunn Chief Mate

3. Stephen S. Vetra Second Mate

4. Jack E. Buss Boat-Swain

5. Glen D. Prouty Able-Seaman

6. Richard P. Foley Able-Seaman

7. David T. J. Rocha Able-Seaman

8. James P. Cobleigh Assistant Engineer

9. William A. Appleton Chief Engineer

10. Timothy S. Varney Assistant Engineer

11. Daniel T. Butler Steward/Cook

12. Brian D. Miller Messman

APPENDIX 1. Event Log for R/V ENDEAVOR Cruise 307.

U.S. GLOBEC Gulf of Maine Event Log (October 1997)
10/97 Local +4 Start Water Cast
YearDay Event Instrument Cast #. Station Turn Date hr:mn End Lat

(N)

Lon

(W)

Depth (m) Depth

(m)

Investigator Region Comments
281.792 1 Calibration 1:2 8 19:00:00 Greene WHOI Finish calibrations; depart
281.875 2 BIOMAPER BMP1 1:2 8 21:00:00 s 4125.62 7048.55 21 3 Greene Vineyard Sound BIOMAPER II Dip test
281.938 3 BIOMAPER BMP1 1:2 8 22:31:00 e 4122.24 7054.93 15 3 Greene Vineyard Sound Recover BIOMAPER II
282.434 4 CTD CTD1 1 9 10:25:00 s 4148.82 6822.98 213 200 Sosik/Houghton Georges Basin Deploy CTD
282.460 5 CTD CTD1 1 9 11:02:00 e 4148.65 6823.05 213 Recover CTD (bottle misfire)
282.470 6 Radiometer SPMR1 1 9 11:17:00 s 4148.63 6823.12 210 200 Sosik Georges Basin Deploy Radiometer
282.491 7 Radiometer SPMR1 1 9 11:47:00 e 4148.63 6823.34 210 Recover Radiometer
282.499 8 CTD CTD2 1 9 11:58:00 s 4148.65 6823.39 210 Sosik/Houghton Georges Basin Deploy CTD
282.514 9 CTD CTD2 1 9 12:20:00 e 4148.75 6823.53 210 200 Bottle Missfire
282.516 10 CTD CTD3 1 9 12:23:00 s 4148.75 6823.53 210 Sosik/Houghton Georges Basin Deploy CTD
282.530 11 CTD CTD3 1 9 12:43:00 e 4148.87 6823.63 210 Recover CTD
282.573 12 BIOMAPER BMP2 1 3:4 9 13:45:00 s 4149.71 6823.40 210 Greene Georges Basin Deploy BIOMAPER II
282.606 13 BIOMAPER BMP2 1 3:4 9 14:32:00 e 4150.74 6822.02 210 Recover BIOMAPER II
282.653 14 BIOMAPER BMP3 1 3:4 9 15:41:00 s 4152.19 6820.34 207 40 Greene Georges Basin Deploy BIOMAPER II
282.850 15 BIOMAPER BMP3 1 3:4 9 20:24:00 e 4210.74 6753.26 243 Recover BIOMAPER II
282.885 16 BIOMAPER BMP4 3:4 9 21:15:00 s 4210.62 6753.19 250 200 Greene Georges Basin RE-redeploy BIOMAPER
283.065 17 MOCNESS MOC1 2 10 01:33:00 s 4221.78 6735.36 275 244 Wiebe Georges Basin Deploy MOCNESS
283.146 18 MOCNESS MOC1 2 10 03:30:00 e 4217.18 6734.17 Recover MOCNESS
283.486 19 BIOMAPER BMP4 10 11:40:00 e 4216.53 6629.07 250 Recover BIOMAPER II
283.507 20 CTD CTD4 3 4:5 10 12:10:00 s 4215.71 6627.96 250 240 Sosik/Houghton Georges Basin Deploy CTD
283.528 21 CTD CTD4 3 4:5 10 12:41:00 e 4215.63 6627.02 Recover CTD
283.542 22 Radiometer SPMR2 3 4:5 10 13:00:00 s 4215.78 6627.89 250 100 Sosik Georges Basin Deploy Radiometer
283.564 23 Radiometer SPMR2 3 4:5 10 13:32:00 e 4215.18 6626.69 250 Recover Radiometer
283.624 24 MOCNESS MOC2 3 5 10 14:58:00 s 4213.87 6625.01 225 Wiebe Georges Basin Deploy MOCNESS
283.688 25 MOCNESS MOC2 3 5 10 16:30:00 e 4211.49 6623.73 Recover MOCNESS
283.792 26 BIOMAPER BMP5 10 19:00:00 s 4227.90 6640.00 Greene/Wiebe Georges Basin Deploy BIOMAPER
284.151 27 MOCNESS MOC3 4 6:7 11 03:38:00 s 4225.30 6700.25 360 330 Wiebe Georges Basin Deploy MOCNESS
284.210 28 MOCNESS MOC3 4 6:7 11 05:02:00 e 4226.31 6703.30 Recover MOCNESS
284.478 29 CTD CTD5 5 11 11:29:00 s 4235.28 6730.91 245 Sosik/Houghton Georges Basin Deploy CTD
284.500 30 CTD CTD5 5 11 12:00:00 e 4235.29 6730.75 Recover CTD
284.508 31 Radiometer SPMR3 5 11 12:12:00 s 4235.34 6730.60 245 180 Sosik Deploy Radiometer
284.531 32 Radiometer SPMR3 5 11 12:44:00 e 4235.60 6730.59 Recover Radiometer
285.049 33 MOCNESS MOC4 6 12 01:10:00 s 4330.94 6753.20 254 240 Wiebe Jordan Basin Deploy MOCNESS
285.101 34 MOCNESS MOC4 12 02:25:00 e 4333.22 6753.56 Recover MOCNESS
285.322 35 BIOMAPER BMP5 12 07:44:00 e 4347.70 6730.42 Jordan Basin Recover BIOMAPER
285.372 36 MOCNESS MOC5 7 TP 8 12 08:55:00 s 4349.13 6729.60 202 190 Wiebe Jordan Basin Deploy MOCNESS
285.420 37 MOCNESS MOC5 7 12 10:05:00 e 4349.59 6729.56 Recover MOCNESS
285.441 38 CTD CTD6 7 12 10:35:00 s 4347.97 6730.09 230 220 Sosik Jordan Basin Deploy CTD
285.460 39 CTD CTD6 7 12 11:02:00 e 4347.83 6730.25 Recover CTD
285.468 40 Radiometer SPMR4 7 12 11:14:00 s 4347.75 6730.33 230 Sosik Jordan Basin Deploy Radiometer
285.483 41 Radiometer SPMR4 7 12 11:35:00 e 4347.68 6730.38 Recover Radiometer
285.528 42 BIOMAPER BMP6 12 12:40:00 s Deploy BIOMAPER
286.010 43 Calibration CMPS 13 00:14:00 s/e 4314.28 6810.39 230 Compass calib, noise test
286.115 44 BIOMAPER BMP6 13 02:45:00 e 4314.28 6810.39 Recover BIOMAPER
286.115 45 Radiometer SPMR5 13 02:45:00 s Deploy Radiometer
286.594 46 Radiometer SPMR5 8 13 14:16:00 e 4320.06 7001.71 Sosik Wilkinson Basin Recover Radiometer
286.601 47 CTD CTD7 8 13 14:25:00 s 4320.09 7001.77 180 172 Sosik Wilkinson Basin Deploy CTD
286.618 48 CTD CTD7 8 13 14:50:00 e 4320.11 7001.63 165 Sosik Wilkinson Basin Recover CTD
286.712 49 BIOMAPER BMP7 13 17:05:00 s 4259.05 6955.12 240 Greene Deploy BIOMAPER
287.014 50 MOCNESS MOC6 9 14 00:20:00 s 4239.40 6925.13 240 220 Wiebe Wilkinson Basin Deploy MOCNESS
287.097 51 MOCNESS MOC6 9 14 02:20:00 e Recover MOCNESS
287.451 52 CTD CTD8 10 14 10:50:00 s 4214.90 6844.83 200 Deploy CTD
287.467 53 CTD CTD8 10 14 11:12:00 e 4215.03 6844.70 Sosik/Houghton Recover CTD
287.472 54 Radiometer SPMR6 10 14 11:20:00 s 4215.01 6844.64 200 150 Sosik Deploy Radiometer
287.490 55 Radiometer SPMR6 10 14 11:45:00 e 4215.60 6844.69 Recover Radiometer
287.620 56 MOCNESS MOC7 11 14 14:53:00 s 4224.04 6849.03 205 185 Wiebe Wilkinson Basin Deploy MOCNESS
287.686 57 MOCNESS MOC7 11 14 16:28:00 e 4224.93 6844.22 Wiebe Wilkinson Basin Recover MOCNESS
288.477 58 BIOMAPER BMP7 12 15 11:27:00 e 4216.63 6915.57 Greene Wilkinson Basin Recover BIOMAPER
288.479 59 Radiometer SPMR7 12 15 11:30:00 s 4216.63 6915.57 230 Sosik Wilkinson Basin Deploy Radiometer
288.493 60 Radiometer SPMR7 12 15 11:50:00 e 4216.72 6915.23 Recover Radiometer
288.503 61 CTD CTD9 12 15 12:05:00 s 4216.70 6915.15 230 Sosik/Houghton Wilkinson Basin Deploy CTD
288.523 62 CTD CTD9 12 15 12:33:00 e 4216.70 6915.15 Recover CTD
288.594 63 BIOMAPER BMP8 15 14:15:00 s 4204.98 6912.53 197 Greene/Wiebe Wilkinson Basin Deploy BIOMAPER II
289.019 64 MOCNESS MOC8 13 16 00:27:00 s 4206.23 6940.48 Wiebe Wilkinson Basin Deploy MOCNESS
289.081 65 MOCNESS MOC8 13 16 01:57:00 e 4204.48 6936.04 226 200 Recover MOCNESS
289.535 66 CTD CTD10 14 16 12:50:00 s 4224.96 6844.68 210 Sosik/Houghton Wilkinson Basin Deploy CTD
289.562 67 CTD CTD10 14 16 13:29:00 e 4225.20 6844.29 Recover CTD
289.896 68 MOCNESS MOC9 15 TP 13 16 21:30:00 s 4228.70 6845.00 180 170 Wiebe Wilkinson Basin Deploy MOCNESS for soliton
289.949 69 MOCNESS MOC9 15 16 22:46:00 e 4230.97 6846.69 200 Recover MOCNESS
289.951 70 BIOMAPER BMP8 15 16 22:50:00 e 4230.97 6846.69 200 Recover BIOMAPER

APPENDIX 2. MOCNESS tow details.

MOCNESS Tow Summary Table

Tow/File Number Date 1997 (yearday) Time Local

(+4 GMT)

Start

Lat/Lon

End

Lat/Lon

M-01-001 PRO

M-01-001 RAW

M-01-01B PRO

10 October

(282)

22:16

00:20

42.369473

-067.593958

42.290423

-067.557

M-01-002 PRO

M-01-002 RAW

M-01-02B PRO

11 October

(283)

14:49

17:36

42.234527

-066.421407

42.284400 -066.425680
M-01-003 PRO M-01-003 RAW

M-01-03B PRO

12 October

(284)

03:00

05:03

42.415045

-066.982088

42.438582

-067.055007

M-01-004 PRO

M-01-004 RAW

12 October

(285)

00:30

02:28

43.497600

-067.882165

43.553743 -067.892618
M-01-005. PRO

M-01-005 .RAW

12 October

(285)

08:54

09:52

43.8164

-067.4939

43.8391

-067.4898

M-01-006. PRO

M-01-006. RAW

M-01-006. TAB

14 October

(287)

00:19

03:38

42.684370

-069.493045

42.579158

-069.220497

M-01-007. PRO

M-01-007. RAW

14 October

(287)

14:47

17:20

42.400900

-068.821992

42.417122

-068.841355

M-01-008. PRO

M-01-008. RAW

16 October

(289)

00:27

01:58

42.103848

-69.675125

42.074440

-69.6000462

M-01-009. PRO

M-01-009. RAW

16 October

(289)

21:34

22:37

424.478703

-68.750728

42.511017

-68.772520

APPENDIX 3. BIOMAPER II event log.

Gulf of Maine ACOUSTIC Log Form (Oct. 1997)
GLOBEC DAT VPR
Yearday DECLAT DECLON Event Tape # Tape # Day S.D. Time Lat (N) Lon (W) Comments
281.792 41.427 70.809 2 0 001 8 281 19:00 4125.62 7048.55 Dip Test (Noise Assessment,Ducers Off, Slow Speed, 4 knots)
281.899 41.400 70.853 2 0 001 8 281 21:35 4124.01 7051.16 Increase to 6 knots, Noise Assessment, Cross Talk Checks
281.928 41.361 70.929 2 0 001 8 281 22:16 4121.65 7055.75 Change direction toward Leg 2
281.938 41.371 70.915 3 0 001 8 281 22:31 4122.24 7054.93 Dip Test Ended (Fish out)
282.573 41.829 68.390 12 1 001 9 282 13:45 4149.71 6823.40 Short test, winch brake needs repair
282.606 41.846 68.367 13 1 001 9 282 14:32 4150.74 6822.02 fish out
282.653 41.870 68.339 14 1 001 9 282 15:41 4152.19 6820.34 fish in, no data logging yet, thresholds being set, no VPR, radiometer only
282.688 0.000 0.000 14 1 001 9 282 16:30 Increased spd to 6.2 knots
282.706 0.000 0.000 14 1 001 9 282 16:57 data logging on
282.712 0.000 0.000 14 1 001 9 282 17:05 fish lowered for pressure sensor calibration
282.722 0.000 0.000 14 1 001 9 282 17:20 at 4 meters for dinner, then decision for pressure/depth
282.772 0.000 0.000 14 1 001 9 282 18:32 to 3 knots
282.776 0.000 0.000 14 1 001 9 282 18:38 change to 6 knots at surface
282.836 42.162 67.914 14 1 001 9 282 20:04 4209.75 6754.83 start tow-yo from 38 meters depth, wire angle 30degrees
282.840 42.170 67.903 14 1 001 9 282 20:10 4210.18 6754.19 shut down data acquisition after single tow; adjust stabilizer to reduce roll (+2degrees)
282.850 42.179 67.888 15 1 001 9 282 20:24 4210.74 6753.26 Recover BIOMAPER
282.885 42.177 67.887 16 1 001 9 282 21:15 4210.62 6753.19 RE-redeploy BIOMAPER (NOTE: This Lat/Lon is NavTrac NOT P-code)
282.895 0.000 0.000 16 1 001 9 282 21:29 Down to 26.5m. Monitor readings. 6 knots.
282.903 0.000 0.000 16 1 001 9 282 21:40 Start down again. (At 100m switch to 5 knots.)
282.956 0.000 0.000 16 1 001 9 282 22:56 Slow to 4 knots ~147m down.
282.958 0.000 0.000 16 1 001 9 282 23:00 175m Test winch for pull up. Lever pulled only 1/3. So continue down.
282.972 0.000 0.000 16 2 002 9 282 23:19 Tape change 004. fish 12 m below surface
282.979 42.322 67.684 16 9 282 23:30 4219.32 6741.02 200m. Start bringing BIOMAPER up.
282.999 0.000 0.000 16 9 282 23:59 Patch. VPR Time: 03:59:24
283.047 0.000 0.000 16 4 3? 10 283 01:07 several acoustic test files, tape 004 in
283.078 0.000 0.000 16 4 10 283 01:52 steady fish tow at 10 meters
283.158 0.000 0.000 16 4 10 283 03:47 new file, tow down to 150 meters
283.174 0.000 0.000 16 5 4 10 283 04:11 VPR tape 4 in, tape 3 had run out, partially overwritten
283.202 0.000 0.000 16 5 4 10 283 04:51 Software restarted after screen freeze; gps suspected
283.218 42.273 67.358 16 5 4 10 283 05:14 4216.40 6721.50 TOWYO from 120 meters to 25 meters begins UP
283.232 0.000 0.000 16 6 4 10 283 05:34 tape 6 in, tape 5 had run out, oscill. stopped (How long?)
283.232 0.000 0.000 16 6 4 10 283 05:34 TOWYO down from 17 meters DOWN
283.262 0.000 0.000 16 6 5 10 283 06:17 VPR tape 005
283.262 42.278 67.228 16 6 5 10 283 06:17 4216.67 6713.66 TOWYO up from 200? UP
283.283 42.275 67.171 16 6 5 10 283 06:48 4216.52 6710.27 TOWYO DOWN: patch pass through at 10:53:30; siphonophores at 11:24:15
283.309 42.271 67.090 16 6 5 10 283 07:25 4216.28 6705.39 TOWYO from 220 meters (in 240m depth) UP
283.317 0.000 0.000 16 7 5 10 283 07:37 DAT TAPE 007 in
283.328 42.269 67.024 16 7 5 10 283 07:53 4216.16 6701.46 TOWYO down from 29 meters DOWN
283.347 0.000 0.000 16 7 6 10 283 08:20 VPR TAPE 006 in
283.352 42.269 66.939 16 7 6 10 283 08:27 4216.15 6656.32 217m depth. On last wrap. Start up. Stop. Pay out. Paint drum.
283.356 42.269 66.927 16 7 6 10 283 08:32 4216.15 6655.59 Start up again.
283.369 42.269 66.875 16 7 6 10 283 08:52 4216.11 6652.49 150m. Pay out to 204m to fix wrap problem.
283.401 0.000 0.000 16 8 6 10 283 09:37 DAT TAPE 008 in.
283.415 42.266 66.705 16 8 6 10 283 09:57 4215.99 6642.32 182m. Start Biomaper back up. Wrap problem fixed.
283.433 0.000 0.000 16 8 7 10 283 10:24 VPR TAPE 007 in.
283.440 42.264 66.604 16 8 7 10 283 10:34 4215.81 6636.21 19m Turn off acoustics. Hold fish at this depth to test.
283.442 0.000 0.000 16 8 7 10 283 10:36 DAT TAPE turned off. Put in fresh tape with restart.
283.444 0.000 0.000 16 8 7 10 283 10:40 VPR TAPE turned off.
283.486 42.275 66.485 19 7 10 283 11:40 4216.53 6629.07 Recover BIOMAPER
283.507 42.265 66.466 10 283 12:10 4215.91 6627.96 Deploy ctd
283.486 42.260 66.450 10 283 12:41 4215.63 6627.02 Recover CTD
283.792 42.465 66.667 20 9 7 10 283 19:00 4227.90 6640.00 BIOMAPER GOING IN; up and down adjust; pressure recalib
283.842 0.000 0.000 9 7 10 283 20:13 TOWYO down on new course
283.842 0.000 0.000 26 9 7 10 283 20:13 Patch VPR (30M)
283.848 42.427 66.635 26 9 7 10 283 20:21 4225.60 6638.11 Holding near sfc (16m). Bring to sfc to begin towyo down.
283.850 42.424 66.638 26 9 7 10 283 20:24 4225.46 6638.27 Begin towyo down.
283.860 42.411 66.656 26 9 7 10 283 20:38 4224.66 6639.34 Slow to 4 knots. 109m. Stop Payout.
283.868 0.000 0.000 26 9 8 10 283 20:50 Start VPR tape 008
283.869 0.000 0.000 26 10 8 10 283 20:52 Start DAT tape 010
283.875 0.000 0.000 26 10 8 10 283 21:00 At 255m stop to test pull up.
283.876 42.398 66.675 26 10 8 10 283 21:02 4223.86 6640.48 275m. Hold depth.
283.882 42.393 66.680 26 10 8 10 283 21:10 4223.59 6640.81 Start new file (s2832110) 275m. Start towyo up. NOTE: Calanus (?) at 225m?
283.895 42.383 66.695 26 10 8 10 283 21:29 4222.97 6641.70 Increase to 5 knots
283.898 0.000 0.000 26 10 8 10 283 21:33 BIG layer at 45m.
283.901 0.000 0.000 26 10 8 10 283 21:37 20m. Stop. Hold position. Bring up slowly with Wire Watch.
283.903 42.375 66.708 26 10 8 10 283 21:41 4222.52 6642.50 Bring plastic 1' our of water. Start back down.
283.906 0.000 0.000 26 10 8 10 283 21:44 Open new file (S2832143). Winch oil temp 140F. Hold at 20m.
283.916 42.363 66.727 26 10 8 10 283 21:59 4221.78 6643.63 Start back down.
283.929 42.350 66.745 26 10 8 10 283 22:18 4220.97 6644.68 200m. Reduce to 4 knots.
283.934 42.346 66.752 26 10 8 10 283 22:25 4220.76 6645.14 280m. Hold.
283.935 42.346 66.752 26 10 8 10 283 22:27 4220.74 6645.14 Start towyo up.
283.947 42.347 66.766 26 10 8 10 283 22:44 4220.84 6645.95 Increase to 5 knots.
283.949 0.000 0.000 26 10 8 10 283 22:46 47m. Siphonophores?
283.952 42.349 66.773 26 10 8 10 283 22:51 4220.96 6646.38 Open new file (S2832252)
283.955 42.351 66.779 26 11 9 10 283 22:55 4221.09 6646.75 Start VPR tape 9. Start DAT tape 11. Start towyo down.
283.960 42.354 66.787 26 11 9 10 283 23:02 4221.23 6647.19 Reduce to 4 knots.
283.971 42.358 66.800 26 11 9 10 283 23:18 4221.49 6647.97 Reduce to 3 knots.
283.975 42.359 66.801 26 11 9 10 283 23:24 4221.54 6648.08 274m. Start towyo back up.
283.981 0.000 0.000 26 11 9 10 283 23:32 200m. Calanus.
283.988 42.363 66.813 26 11 9 10 283 23:42 4221.78 6648.79 Increase to 4 knots.
283.994 42.366 66.822 26 11 9 10 283 23:52 4221.97 6649.32 Top of ascent <5m from surface.
283.997 0.000 0.000 26 11 9 10 283 23:55 New file.
283.997 0.000 0.000 26 11 9 10 283 23:56 Start towyo down.
284.006 42.371 66.838 26 11 9 11 284 00:08 4222.25 6650.29 Slow to 3 knots.
284.006 0.000 0.000 26 11 9 11 284 00:08 TIMEOUT ERROR in setting BNC Sync Out Command.
284.014 0.000 0.000 26 11 9 11 284 00:20 COMMUNICATIONS ERROR. Echo Sounder Sequences not synchronized. Or problem sending next sampling sequence definition.
284.015 42.372 66.846 26 11 9 11 284 00:22 4222.34 6650.74 270m. Hold.
284.016 0.000 0.000 26 11 9 11 284 00:23 Problems encountered in sending stop processing command.
284.018 0.000 0.000 26 11 9 11 284 00:26 New file. S2840025
284.018 0.000 0.000 26 11 9 11 284 00:26 Problems encountered. Exited program. Desktop colors changed. Lost mouse. Tried ALT F4. Tried CTRL/ALT/DEL. POWERED OFF.
284.022 0.000 0.000 26 11 9 11 284 00:32 New file. S2840032.
284.023 42.374 66.854 26 11 9 11 284 00:33 4222.42 6651.24 257m. Start towyo ascent.
284.042 0.000 0.000 29 12? 10? 11 284 01:00 Begin surface tow through MOCNESS
284.044 42.382 66.880 29 11 284 01:03 4222.95 6652.81 End S2840032 Biomaper @11.8meters; Begin S2840105 Biomaper DOWN
284.060 42.389 66.900 29 11 284 01:27 4223.35 6654.00 Begin S2840128 TOWYO UP
284.079 42.399 66.930 29 11 284 01:54 4223.96 6655.80 Begin S2840156 TOW @5meters during MOCNESS
284.124 42.414 66.981 29 13? 11? 11 284 02:59 4224.86 6658.87 Begin S2840301 TOW@5 meters
284.226 42.443 67.083 29 14? 12? 11 284 05:25 4226.60 6705.00 Begin S2840525 TOW @5 meters, MOC in, new ESSBM2_007.pro(.raw)
284.243 42.367 67.096 29 11 284 05:50 4222.05 6705.77 TOWYO DOWN
284.249 0.000 0.000 29 11 284 05:58 Salinity peak at 50 meters, strong scatter on all 5 down lookers
284.251 42.458 67.117 29 11 284 06:02 4227.50 6707.00 Salinity off scale, interleaved water masses, srong layer scatter, 130 meters salinity leaves, > 34.5
284.271 0.000 0.000 29 11 284 06:30 250 meters: TOWYO UP
284.290 42.487 67.195 29 11 284 06:57 4229.20 6711.70 surface: TOWYO DOWN, seas rising
284.291 0.000 0.000 29 15 13 11 284 06:59 DAT 015 VPR 013in, Begin S2840525 Bottom layer green, 95 meters thick on 43 and 120, we hit the upper edge...
284.315 42.507 67.248 29 15 13 11 284 07:33 4230.40 6714.90 TOWYO up from 65 meters above bottom (315 meters) LAYERING DISTINCT
284.337 42.522 67.298 29 15 13 11 284 08:05 4231.34 6717.85 Begin S2840802, TOWYO DOWN from 2 meters
284.356 42.530 67.326 26 15 13 11 284 08:32 4231.83 6719.55 NOTE: Vert Vel went from -10m/min to +5.6m/min. Shear? Screen captured. ~200m.
284.361 42.533 67.336 26 15 13 11 284 08:40 4231.97 6720.18 250m. Bottom of towyo. Start S2840842 file. Start towyo ascent.
284.364 0.000 0.000 26 15 13 11 284 08:44 Patch 225m.
284.375 0.000 0.000 26 16 14 11 284 09:00 Begin DAT tape 16 and VPR tape 14.
284.383 42.545 67.375 26 16 14 11 284 09:11 4232.72 6722.50 Surface. Start new file. Start down.
284.407 42.558 67.419 26 16 14 11 284 09:46 4233.48 6725.13 240m. Hold. Errors on HTI program. Exit program. Reboot.
284.409 0.000 0.000 26 16 14 11 284 09:49 New File S2840948. Start up.
284.425 0.000 0.000 26 16 14 11 284 10:12 Patch 35m.
284.428 42.570 67.458 26 16 14 11 284 10:16 4234.21 6727.49 Biomap at surface. New file. Towyo back down.
284.435 0.000 0.000 26 16 14 11 284 10:27 Patch 100m. Slow to 3.5 knots.
284.443 42.580 67.489 26 16 14 11 284 10:38 4234.78 6729.31 220m. Bottom of towyo. New File S2841039. Patch. Start ascent.
284.455 0.000 0.000 26 16 14 11 284 10:55 Patch 60m.
284.459 0.000 0.000 26 16 14 11 284 11:01 END TAPES: DAT 016 and VPR 014. Holding BIOMAPER at surface during CTD.
284.460 0.000 0.000 26 17 ------------ 11 284 11:02 Recording no tapes. New file: s2841102.
284.478 42.588 67.515 26 17 ------------ 11 284 11:29 4235.29 6730.91 ctd deployed
284.622 0.000 0.000 26 17 15 11 284 14:55 new vpr tape #015
284.628 42.838 67.510 26 17 15 11 284 15:05 4250.30 6730.57 start descent of biomapper
284.638 0.000 0.000 26 17 15 11 284 15:18 biomaper at 50 m begin ascent
284.642 0.000 0.000 26 17 15 11 284 15:25 biomaper at surface begin descent
284.650 0.000 0.000 26 17 15 11 284 15:36 biomaper at 50m begin ascent
284.658 0.000 0.000 26 17 15 11 284 15:47 biomaper at surface begin descent
284.668 0.000 0.000 26 18 15 11 284 16:02 change DAT tape to 018
284.669 0.000 0.000 26 18 15 11 284 16:03 biomaper at 53m begin ascent
284.688 42.992 67.507 26 18 15 11 284 16:30 4259.50 6730.40 tow @5 meters (hawk on board); layer structure strongest on 120 kHz, thick layers (50m), something at 200 meters, just out of range...)
284.706 0.000 0.000 26 18 16 11 284 16:57 change VPR to 016 thick layer structure persists, layer at 200 meters
284.752 43.203 67.505 26 19 17 11 284 18:03 4312.20 6730.30 resync of DAT and VPR Tapes; strong layer at 200 meters, one at approx 30 meters, thick layers gone
284.773 43.237 67.533 26 19 17 11 284 18:33 4314.23 6731.97 TOWYO DOWN from 5 meters
284.778 0.000 0.000 26 19 17 11 284 18:40 TOWYO UP from 143 meters/180 depth
284.791 43.260 67.564 26 19 17 11 284 18:59 4315.57 6733.83 TOWYO DOWN from 4 meters (sight)
284.805 43.277 67.583 26 19 17 11 284 19:19 4316.62 6735.00 TOWYO UP from 170/220
284.821 43.295 67.612 26 19 17 11 284 19:42 4317.70 6736.70 TOWYO DOWN from sight, begin S2841942
284.831 43.305 67.627 26 19 17 11 284 19:56 4318.30 6737.60 TOWYO UP 165/220
284.839 0.000 0.000 26 20 18 11 284 20:08 Patch at surface (virtual patch in layer due to cross through?)
284.844 43.320 67.645 26 20 18 11 284 20:15 4319.20 6738.70 TOWYO DOWN from sight
284.858 43.336 67.666 26 20 18 11 284 20:35 4320.18 6739.99 Bottom of descent. 191.4m.
284.870 0.000 0.000 26 20 18 11 284 20:53 Patch 35m...looks to continue throught towyo.
284.874 43.352 67.689 26 20 18 11 284 20:58 4321.14 6741.36 End S2841942. Begin S2842058. Top of towyo. Boot to sfc.
284.888 43.366 67.710 26 20 18 11 284 21:19 4321.97 6742.59 Bottom of towyo descent 200m.
284.901 43.380 67.730 26 20 18 11 284 21:38 4322.80 6743.81 Top of ascent. Boot to sfc.
284.919 43.397 67.754 26 20 18 11 284 22:03 4323.84 6745.25 S2842204 New file. Bottom of towyo descent. 220m
284.922 0.000 0.000 26 21 18 11 284 22:07 Start DAT tape 21.
284.924 0.000 0.000 26 21 19 11 284 22:10 Start VPR tape 19.
284.935 0.000 0.000 26 21 19 11 284 22:27 HUGE patch of critters on VPR.
284.939 43.419 67.786 26 21 19 11 284 22:32 4325.16 6747.14 Top of towyo ascent. Boot to sfc. Abundant critters.
284.955 43.433 67.806 26 21 19 11 284 22:55 4326.00 6748.38 Bottom of descent 204m.
284.957 0.000 0.000 26 21 19 11 284 22:58 Resync VPR mid tape.
284.969 0.000 0.000 26 21 19 11 284 23:16 LOTS of critters!
284.972 43.451 67.830 26 21 19 11 284 23:19 4327.07 6749.78 Top of ascent. Boot to sfc. New file S2842320
284.988 43.469 67.855 26 21 19 11 284 23:43 4328.12 6751.31 217m bottom of towyo. Start up.
285.004 43.486 67.878 26 21 19 12 285 00:06 4329.13 6752.66 S2850006 New file. Top of ascent. Hold at 5m for MOCNESS. LOTS of critters.
285.008 0.000 0.000 26 22 20 12 285 00:11 Start new DAT tape #22. Start new VPR tape #20.
285.053 0.000 0.000 26 22 20 12 285 01:16 Begin S2850116 (computer crashed); Moc tow#4, ESS BM@_010.pro/.raw
285.092 43.544 67.891 26 23 21 12 285 02:13 4332.65 6753.48 Start dat 23 while towing moc, new vpr 021 for bugs
285.131 43.578 67.878 26 23 21 12 285 03:08 4334.67 6752.70 End S2850116
285.134 43.581 67.872 26 23 21 12 285 03:13 4334.87 6752.30 Begin S2850313 Transect leg to #8, towyo
285.178 43.636 67.782 26 24 22 12 285 04:16 4338.16 6746.94 Restart computer, rewind tapes
285.194 43.659 67.745 26 24 22 12 285 04:39 4339.52 6744.68 S2850437 TOWYO DOWN
285.218 43.687 67.696 26 24 22 12 285 05:14 4341.19 6741.74 TOWYO UP from 180/220
285.233 43.704 67.667 26 24 22 12 285 05:36 4342.21 6740.02 TOWYO surfaces; close files
285.235 43.704 67.666 26 24 22 12 285 05:38 4342.25 6739.94 Begin S2850537, TOWYO DOWN
285.267 43.741 67.598 26 24 22 12 285 06:24 4344.45 6735.90 Screen CAPTURE S2850537.bmp, begin S2850629
285.271 43.743 67.597 26 24 22 12 285 06:30 4344.56 6735.83 TOWYO DOWN
285.281 43.753 67.579 26 25 23 12 285 06:44 4345.19 6734.76 Change tapes, VPR full of action, 1mHz heavy scatter at bottom
285.298 43.772 67.548 26 25 23 12 285 07:09 4346.31 6732.89 Surface, remove seaweed from termination
285.299 43.773 67.547 26 25 23 12 285 07:10 4346.35 6732.82 SCRCAP S2850629.bmp
285.301 43.775 67.542 26 25 23 12 285 07:14 4346.52 6732.52 Begin S2850714
285.303 43.776 67.540 26 25 23 12 285 07:17 4346.55 6732.40 TOWYO DOWN from Surface
285.316 43.789 67.517 26 25 23 12 285 07:35 4347.33 6731.03 TOWYO UP calanus in VPR, thick "green layer" over bottom
285.322 43.795 67.507 38 25 23 12 285 07:44 4347.70 6730.42 RECOVER BIOMAPER to check rad. stuff
285.516 0.000 0.000 42 25 23 12 285 12:23 Biomaper back in water
285.531 43.730 67.498 42 25 23 12 285 12:44 4343.77 6729.88 Biomaper starts down
285.545 43.700 67.498 42 25 23 12 285 13:05 4341.98 6729.88 biomaper at 205 m begin up
285.555 43.682 67.503 42 26 24? 12 285 13:19 4340.91 6730.17 change DAT tape to #26
285.561 43.668 67.503 42 26 24? 12 285 13:28 4340.09 6730.17 biomaper at surface begin down
285.577 43.630 67.509 42 26 24? 12 285 13:51 4337.82 6730.55 biomaper at 200m begin up
285.592 43.595 67.519 42 26 24? 12 285 14:13 4335.67 6731.16 biomaper at surface change file \S2851415
285.615 43.546 67.525 42 26 24? 12 285 14:46 4332.78 6731.48 biomaper at 208m begin up
285.633 43.517 67.538 42 26 24? 12 285 15:12 4331.02 6732.29 drag on winch - possible snag with lobster trap...
285.638 0.000 0.000 42 26 24? 12 285 15:19 ...check-out okay; disable ducers and check in-air switch
285.642 43.510 67.542 42 27 25 12 285 15:24 4330.58 6732.50 biomaper restarted at surface new file \S2851525 new DAT tape #27
285.646 43.504 67.545 42 27 25 12 285 15:30 4330.23 6732.71 biomaper begin down
285.660 43.478 67.558 42 27 25 12 285 15:51 4328.69 6733.47 TOWYO UP from 200 meters
285.675 43.450 67.568 42 27 25 12 285 16:12 4327.00 6734.10 SCR CAP begin S2851525, change to D drive for data
285.685 0.000 0.000 42 27 25 12 285 16:27 Restart software/data acq. begin S2851627, TOWYO DOWN from surface
285.714 43.372 67.606 42 27 25 12 285 17:08 4322.34 6736.36 TOWYO UP from 200/226
285.728 43.345 67.621 42 28 26 12 285 17:29 4320.69 6737.27 Changed VPR and DAT tapes- last 15 min VPR missing
285.733 43.339 67.624 42 28 26 12 285 17:36 4320.35 6737.44 TOWYO DOWN from termination at surf. SCRCAP, begin S2851738
285.756 43.302 67.643 42 28 26 12 285 18:09 4318.10 6738.59 TOWYO UP from 217/247
285.774 43.267 67.650 42 28 26 12 285 18:35 4316.00 6739.00 TOWYO DOWN begin S2851838
285.792 43.239 67.683 42 28 26 12 285 19:01 4314.34 6740.95 TWOYO UP from 200/230
285.808 43.228 67.703 42 28 26 12 285 19:24 4313.70 6742.18 Surface tow to #9 (9.6 meters on 43kHz)
285.810 43.229 67.705 42 29 27 12 285 19:26 4313.72 6742.30 Tape Swaps, TOWYO DOWN interrupt in data file begin S2851935
285.827 43.231 67.748 42 29 27 12 285 19:51 4313.85 6744.86 TOWYO UP 190/220
285.840 43.231 67.776 42 29 27 12 285 20:09 4313.84 6746.53 top of towyo ascent seaweed check...
285.843 0.000 0.000 42 29 27 12 285 20:14 ...s2851935 close open s2852014
285.844 43.232 67.822 42 29 27 12 285 20:16 4313.89 6749.34 bottom of towyo
285.879 43.233 67.872 42 29 27 12 285 21:06 4313.95 6752.30 top of ascent new file s2852110
285.890 0.000 0.000 42 29 27 12 285 21:22 re-boot monitor computer (ground fault monitor) new file s2852131
285.901 0.000 0.000 42 30 28 12 285 21:38 vpr tape #28 and DAT tape #30 stoped decent at 2120h contiuned at 2147h
285.913 43.235 67.967 42 30 28 12 285 21:55 4314.12 6758.04 bottom 177m
285.925 43.236 67.994 42 30 28 12 285 22:12 4314.17 6759.64 top of ascent close s2852131 new file 2852214
285.947 43.238 68.043 42 30 28 12 285 22:43 4314.25 6802.56 BOTTOM OF towyo big patches of critters at 03:04:10 UCT
285.965 43.238 68.086 42 30 28 12 285 23:09 4314.30 6805.18 top of ascent open new file s2852311
285.981 43.239 68.127 42 30 28 12 285 23:33 4314.37 6807.60 bottom of towyo
285.987 43.239 68.144 42 31 29 12 285 23:41 4314.34 6808.63 new vpr tape #29 new dat tape #31
286.002 43.256 69.166 42 31 29 13 286 00:03 4315.34 6909.96 top of ascent stop towyo for testing stop tapes (vpr 29, DAT 31)
286.010 43.238 68.173 43 ---------- --------- 13 286 00:14 4314.28 6810.39 compass calibration/ noise assessments no tapes software reset to pulse from chirp
286.115 0.000 0.000 44 --------- --------- 13 286 02:45 BIOMAPER back on board
286.712 0.000 0.000 49 31 29 13 286 17:05 BIOMAPER redeployed; powered up
286.728 42.984 69.919 49 31 29 13 286 17:29 4259.05 6955.12 BIOMAPER file S2861727
286.751 42.984 69.919 49 31 29 13 286 18:01 4259.05 6955.12 HTI program locked - rebooted new file S2861801
286.760 42.931 69.919 49 31 29 13 286 18:15 4255.87 6955.13 bottom of towyo
286.785 42.884 69.918 49 31 29 13 286 18:51 4253.04 6955.05 top of towyo
286.787 0.000 0.000 49 31 29 13 286 18:53 closed file S2861801
286.792 0.000 0.000 49 31 29 13 286 19:00 started file BM2_016.pro + M2_016.raw
286.801 0.000 0.000 49 31 29 13 286 19:13 end DAT tape 31
286.804 0.000 0.000 49 32 30 13 286 19:18 start DAT tape 32 start VPR tape 30
286.809 0.000 0.000 49 32 30 13 286 19:25 offset about 4 meters as BMP turned from 9 to 12
286.813 42.831 69.909 49 32 30 13 286 19:31 4249.85 6954.54 S2861902 make turn to transect leg 2 Wilkinson Basin note surface sadata at top of file
286.839 42.812 69.854 49 32 30 13 286 20:08 4248.70 6951.22 bottom of towyo
286.842 42.809 69.838 49 32 30 13 286 20:13 4248.54 6950.26 HTI locked up Open new file S2862051
286.858 42.798 69.810 49 32 30 13 286 20:36 4247.88 6948.60 top of towyo
286.879 42.782 69.762 49 32 30 13 286 21:06 4246.95 6945.73 bottom of towyo descent
286.881 0.000 0.000 49 32 30 13 286 21:08 end S2863108 begin S2862108
286.882 0.000 0.000 49 32 30 13 286 21:10 error communication cannot connect to DES
286.882 0.000 0.000 49 32 30 13 286 21:10 came up to 160m
286.889 0.000 0.000 49 32 30 13 286 21:20 restart collect data communication software
286.890 0.000 0.000 49 33 30 13 286 21:21 start new file S286118 start VPR tape 31
286.892 0.000 0.000 49 33 31 13 286 21:24 start DAT tape 33
286.903 42.758 69.701 49 33 31 13 286 21:40 4245.49 6942.06 top of towyo
286.913 42.749 69.675 49 33 31 13 286 21:55 4244.94 6940.47 stop winch for squeeky bearings at 94m
286.932 42.732 69.624 49 33 31 13 286 22:22 4243.93 6937.43 bottom of towyo
286.958 42.710 69.561 49 33 31 13 286 22:59 4242.61 6933.64 top of towyo end file S286118 begin file S2862300
286.978 0.000 0.000 49 33 32 13 286 23:28 new VPR tape
286.979 0.000 0.000 49 34 32 13 286 23:30 new DAT tape
286.984 42.682 69.487 49 34 32 13 286 23:37 4240.94 6929.22 225 bottom of towyo
287.002 42.667 69.443 49 34 32 14 287 00:03 4240.00 6926.58 top of towyo close file S2862300 mocness started
287.002 0.000 0.000 49 --------- --------- 14 287 00:03 open file S2870005
287.015 0.000 0.000 49 --------- --------- 14 287 00:22 VPR and DAT tape turned off
287.099 42.603 69.294 49 34 32 14 287 02:22 4236.16 6917.63 5 knots, TOWYO DOWN still on S2870005, surface data at top no tape
287.116 0.000 0.000 49 34 32 14 287 02:47 4 knots, at 100 meters
287.125 42.581 69.226 49 34 32 14 287 03:00 4234.87 6913.56 TOWYO UP BIO_ENG locked up at 02:33 data ok
287.138 42.573 69.195 49 34 32 14 287 03:19 4234.38 6911.70 5 knots
287.149 42.563 69.168 49 35 33 14 287 03:34 4233.78 6910.05 TOWYO surfaces, new file, new Tapes, software rebooted, BIO_ENG and fish restarted, powered up
287.160 0.000 0.000 49 35 33 14 287 03:50 begin S2870350;
287.163 42.549 69.130 49 35 33 14 287 03:54 4232.96 6907.77 TOWYO DOWN
287.176 0.000 0.000 49 35 33 14 287 04:14 4knots, bmp at 100 meters
287.183 42.531 69.080 49 35 33 14 287 04:24 4231.83 6904.82 TOWYO UP
287.191 0.000 0.000 49 35 33 14 287 04:35 5knots
287.201 0.000 0.000 49 35 33 14 287 04:50 coming up
287.202 42.514 69.037 49 35 33 14 287 04:51 4230.82 6902.20 back to surface
287.204 0.000 0.000 49 35 33 14 287 04:54 TOWYO DOWN
287.219 0.000 0.000 49 35 33 14 287 05:16 4knots
287.229 0.000 0.000 49 35 33 14 287 05:30 TOWYO UP from 183/222
287.231 42.492 68.976 49 35 33 14 287 05:32 4229.51 6858.58 TOWYO ACTUALLY UP, 200/222
287.244 42.483 68.948 49 36 34 14 287 05:52 4228.96 6856.90 TAPE CHANGE
287.252 42.478 68.935 49 36 34 14 287 06:03 4228.67 6856.11 TOP again, reboot bioeng, (locked up with calculator running?)
287.258 0.000 0.000 49 36 34 14 287 06:12 begin S2870611
287.265 0.000 0.000 49 36 34 14 287 06:22 BIOESS restarts on umpteenth try
287.268 42.465 68.898 49 36 34 14 287 06:26 4227.92 6853.88 Start new towyo down (S2870611)
287.296 42.449 68.842 49 36 34 14 287 07:06 4226.94 6850.50 Bottom of towyo
287.315 42.435 68.824 49 36 34 14 287 07:34 4226.07 6849.44 Top of towyo. Close File S2870611
287.318 42.437 68.821 49 36 34 14 287 07:38 4226.22 6849.24 New File Started S2870737
287.331 42.427 68.787 49 37 35 14 287 07:57 4225.63 6847.19 Tape Change DAT/VPR
287.333 0.000 0.000 49 37 35 14 287 08:00 Hold Fish near surface while waiting for turn.
287.347 42.415 68.751 49 37 35 14 287 08:19 4224.88 6845.07 Begin descent.
287.354 42.394 68.750 49 37 35 14 287 08:30 4223.65 6845.01 Bottom of towyo. Begin ascent. Very shallow <200m to bottom.
287.365 42.378 68.750 49 37 35 14 287 08:46 4222.69 6845.02 Top of ascent. 5m from surface.
287.367 0.000 0.000 49 37 35 14 287 08:48 Close File S2870737. Open S2870848.
287.376 42.358 68.750 49 37 35 14 287 09:01 4221.45 6845.02 Bottom of descent 180m.
287.389 42.336 68.750 49 37 35 14 287 09:20 4220.14 6845.01 Top of ascent.
287.403 422.460 68.748 49 37 35 14 287 09:40 42187.60 6844.88 Bottom of descent 190m.
287.413 0.000 0.000 49 38 36 14 287 09:55 Start VPR tape 36 and DAT tape 38.
287.419 42.285 68.747 49 38 36 14 287 10:03 4217.08 6844.79 Close File S2870848. Open File S2871003.
287.431 0.000 0.000 49 38 36 14 287 10:20 VPR something stuck on film...Fishing Line?
287.431 42.264 68.745 49 38 36 14 287 10:21 4215.85 6844.68 Bottom of towyo 189m.
287.442 42.249 68.749 49 38 36 14 287 10:37 4214.96 6844.92 Top of ascent. Hold at surface for CTD. Check what's on VPR. VPR item clears itself.
287.443 0.000 0.000 49 38 36 14 287 10:38 Turn off VPR and DAT tapes for CTD.
287.444 0.000 0.000 49 38 36 14 287 10:39 Close File S2871003. Stop recording for CTD.
287.450 42.247 68.749 49 38 36 14 287 10:48 4214.84 6844.91 CTD deployed.
287.467 42.245 68.752 49 38 36 14 287 11:12 4214.72 6845.10 CTD recovered.
287.472 42.251 68.744 49 38 36 14 287 11:20 4215.07 6844.64 Radiometer depolyed.
287.494 42.260 68.745 49 38 36 14 287 11:51 4215.60 6844.69 Radiometer recovered.
287.499 42.263 68.750 49 38 36 14 287 11:58 4215.76 6845.01 TOWYO DOWN after CTD and Radiometer; no bmp data during station;
287.511 0.000 0.000 49 38 36 14 287 12:16 fish diving under hull though wind on stbd. course change to 350; wave packet/soliton pass through
287.519 0.000 0.000 49 38 36 14 287 12:28 course change another 10 degrees
287.552 42.359 68.817 49 38 36 14 287 13:15 4221.52 6849.03 TOWYO BACK TO SURFACE, new files starting
287.558 42.359 68.817 49 39 37 14 287 13:23 4221.52 6849.03 begin S2871322
287.567 42.361 68.842 49 39 37 14 287 13:37 4221.63 6850.53 TOWYO DOWN
287.585 42.381 68.865 49 39 37 14 287 14:02 4222.87 6851.87 TOWYO UP
287.600 42.401 68.846 49 39 37 14 287 14:24 4224.09 6850.78 TOWYO BACK TO SURFACE for MOC
287.604 42.403 68.840 49 39 37 14 287 14:30 4224.17 6850.38 begin S2871430
287.685 42.416 68.737 49 --------- -------- 14 287 16:26 4224.93 6844.23 paused, no tape change, started data tranfer
287.686 42.416 68.737 49 -------- -------- 14 287 16:28 4224.93 6844.22 took out tapes 39 and 37, new tapes not started; data transfer and steam back to track from MOC end.
287.755 42.418 68.952 49 40 38 14 287 18:07 4225.08 6857.14 Begin S2871809, start tapes, TOWYO DOWN at 5.5knots, drop to 4.5 at 100meters depth
287.785 0.000 0.000 49 40 38 14 287 18:50 TOWYO UP from 185/204
287.797 0.000 0.000 49 40 38 14 287 19:08 back to 5.5knots at 100 meters
287.810 42.418 69.106 49 40 38 14 287 19:27 4225.08 6906.33 TOWYO at SURFACE, begin S2871928, Low T layer at 150 meters, resync VPR,
287.813 0.000 0.000 49 40 38 14 287 19:30 TOWYO DOWN at 5.5 knots
287.829 0.000 0.000 49 40 38 14 287 19:54 drop to 4.5 knots
287.836 42.418 69.186 49 40 38 14 287 20:04 4225.06 6911.15 TOWYO UP
287.842 42.417 69.202 49 41 39 14 287 20:12 4225.01 6912.09 Change VPR and DAT to 39 and 41 respectively
287.854 0.000 0.000 41 39 14 287 20:30 Winch OVERHEATING (135 degrees)... due to faster tow?
287.857 42.424 69.245 49 41 39 14 287 20:34 4225.41 6914.71 Top of ascent
287.860 42.427 69.253 49 41 39 14 287 20:38 4225.60 6915.20 Winch temp 135F. Hold at 30m to check winch.
287.869 42.436 69.280 49 41 39 14 287 20:52 4226.16 6916.79 Bring fish to sfc to evaluate winch temp prob.
287.872 42.439 69.289 49 41 39 14 287 20:56 4226.36 6917.33 Tow fish at sfc
287.906 42.476 69.385 49 41 39 14 287 21:44 4228.56 6923.10 Winch temp 120F. Begin towyo down. Active VPR screen.
287.917 42.487 69.415 49 41 39 14 287 22:01 4229.20 6924.88 Active VPR screen still.
287.928 42.494 69.437 49 42 40 14 287 22:16 4229.63 6926.24 Change DAT/VPR tapes.
287.938 42.501 69.458 49 42 40 14 287 22:30 4230.08 6927.47 Bottom of towyo descent.
287.963 42.521 69.516 49 42 40 14 287 23:06 4231.26 6930.94 Top of towyo. Start new file: S2872306. Winch 140F keep towyoing.
287.989 42.540 69.571 49 42 40 14 287 23:44 4232.42 6934.24 Bottom of descent. Begin ascent.
288.010 42.556 69.610 49 43 41 15 288 00:15 4233.36 6936.59 towyo at surface - kept at surface
288.013 42.556 69.610 49 43 41 15 288 00:19 4233.36 6936.59 new DAT tape # 43, VPR tape #41
288.021 42.556 69.610 49 43 41 15 288 00:30 4233.36 6936.59 begin record, begin down cast file S2880030
288.052 42.587 69.691 49 43 41 15 288 01:15 4235.23 6941.48 bottom of towyo begin up
288.076 42.604 69.733 49 43 41 15 288 01:49 4236.24 6943.97 top of towyo stop S2880154
288.079 42.607 69.743 49 43 41 15 288 01:54 4236.42 6944.55 begin down cast S2880154
288.106 42.629 69.803 49 43 41 15 288 02:32 4237.74 6948.19 bottom of towyo begin up
288.108 42.631 69.809 49 43 41 15 288 02:36 4237.87 6948.53 new DAT tape #43, VPR tape #42
288.130 42.645 69.855 49 44 42 15 288 03:07 4238.72 6951.28 top of towyo - begin run at surface
288.154 42.664 69.916 49 44 42 15 288 03:42 4239.81 6954.99 end file S2880154, shut down system and transect south to next turning point
288.226 0.000 0.000 49 --------- --------- 15 288 05:25 leg 16 to 17, start file S2880545 @6knots,
288.237 42.484 69.865 49 44 42 15 288 05:41 4229.06 6951.88 starting up ESS and sonar, trying to get software running
288.408 42.480 69.853 49 44 42 15 288 09:47 4228.78 6951.16 TOWYO DOWN 5knots
288.256 0.000 0.000 49 44 42 15 288 06:08 100 meters, 4knots
288.261 0.000 0.000 49 44 42 15 288 06:16 Layer just off bottom on 43 and 120, 10 meters thick, T min at 80 meters
288.272 0.000 0.000 49 44 42 15 288 06:32 begin S2880632 after: hold off on winch, sonar off ??? button hit on mouse, restarting software, depth from bridge 134 fathoms, flat line until restart to get pulse
288.278 42.454 69.774 49 45 43 15 288 06:41 4227.22 6946.46 change tapes, descending at 6.4 meters/min
288.285 42.441 69.761 49 45 43 15 288 06:51 4226.43 6945.65 TOWYO UP
288.306 0.000 0.000 49 45 43 15 288 07:20 5 knots, 100 meters
288.315 42.428 69.701 49 45 43 15 288 07:33 4225.67 6942.07 TOWYO at surface
288.317 42.426 69.695 49 45 43 15 288 07:37 4225.58 6941.70 begin S2880736 TOWYO DOWN
288.333 0.000 0.000 49 45 43 15 288 08:00 down to 4knots
288.345 42.404 69.635 49 45 43 15 288 08:17 4224.23 6938.07 Bottom of towyo. 220/250m. Begin ascent.
288.358 42.394 69.609 49 45 43 15 288 08:36 4223.63 6936.55 Patch on VPR at 60m.
288.364 42.389 69.595 49 46 44 15 288 08:44 4223.35 6935.71 Close file. Open file: S2880844. Top of ascent. Change VPR/DAT tapes.
288.388 42.370 69.541 49 46 44 15 288 09:18 4222.22 6932.44 Bottom of descent. 222/240m. Begin ascent.
288.402 42.359 69.511 49 46 44 15 288 09:39 4221.53 6930.64 Patch on VPR at 100m.
288.410 42.353 69.488 49 46 44 15 288 09:51 4221.18 6929.28 Top of ascent. Close file: S2880844. Open file: S2880951.
288.417 42.354 69.469 49 46 44 15 288 10:00 4221.26 6928.14 Stop descent at 50m. Start fish to sfc.
288.420 42.351 69.458 49 46 44 15 288 10:05 4221.06 6927.48 Hold fish at sfc. to get back on course. Steam to waystop #17.
288.425 42.346 69.445 49 46 44 15 288 10:12 4220.74 6926.71 Bringing speed to 8 knots.
288.451 42.301 69.336 49 47 45 15 288 10:50 4218.08 6920.14 New DAT/VPR tapes (probably missed a couple of minutes.) Winch temp 115F.
288.469 42.273 69.259 49 47 45 15 288 11:15 4216.41 6915.51 Close file: S2880951. Stop DAT/VPR tapes.
288.477 42.277 69.259 49 47 45 15 288 11:27 4216.63 6915.57 BIOMAPER recovered.
288.000 0.000 0.000 47 45 15 288 00:00
288.624 42.088 69.223 47 45 15 288 14:58 4205.28 6913.41 Begin S2881453, ducers soaped, vpr cleaned, bmp redeployed, rebooted
288.627 42.098 69.232 47 45 15 288 15:03 4205.88 6913.90 Begin S2881502 to change interval duration in seq. summ. from 0.5 to 0.17
288.628 0.000 0.000 47 45 15 288 15:05 changes did not take effect, see 16:44 entry
288.631 42.095 69.241 47 45 15 288 15:08 4205.71 6914.44 Begin S2881507try again with interval duration at 0.167...bmp at surface, waiting
288.635 42.099 69.250 47 45 15 288 15:15 4205.96 6915.02 TOWYO DOWN
288.667 42.126 69.316 47 45 15 288 16:01 4207.57 6918.96 Dat tape not recording (on pause), now 1 hour out of sync with vpr
288.670 0.000 0.000 47 45 15 288 16:05 TOWYO UP Begin S2881613, SCRCAP
288.674 0.000 0.000 47 45 15 288 16:10 TOWYO DOWN
288.685 0.000 0.000 47 46 15 288 16:26 VPR tape change
288.691 0.000 0.000 47 46 15 288 16:35 spd to 4 knots
288.695 42.155 69.368 47 46 15 288 16:41 4209.30 6922.09 TOWYO UP from 156/186
288.702 0.000 0.000 47 46 15 288 16:51 5knots
288.706 0.000 0.000 47 46 15 288 16:57 bottom coming up dramatically under us on way up
288.711 0.000 0.000 47 46 15 288 17:04 TOWYO at SURFACE, changing ping interval again, need to push add button, and delete other seq.
288.712 42.172 69.422 47 46 15 288 17:05 4210.33 6925.30 Begin S2881705
288.730 42.191 69.469 47 46 15 288 17:31 4211.48 6928.13 Begin S2881729/fix interval duration to .167 seconds
288.736 42.199 69.486 48 46 15 288 17:40 4211.91 6929.16 dat tape change
288.749 0.000 0.000 48 46 15 288 17:59 TOWYO UP from 200/225 moon rise
288.754 0.000 0.000 48 46 15 288 18:06 software crashed, 541 seconds behind due to interval shortening, stopped, winch being repaired too
288.757 42.223 69.526 48 46 15 288 18:10 4213.37 6931.56 Begin S2881810, restart with 30 second integrations
288.768 42.246 69.530 48 46 15 288 18:26 4214.76 6931.80 CRASH and RESTART, begin S2881826
288.776 42.270 69.525 48 47 15 288 18:38 4216.22 6931.50 VPR tape change
288.778 42.271 69.525 48 47 15 288 18:40 4216.25 6931.52 TOWYO to surface
288.781 42.275 69.535 48 47 15 288 18:45 4216.47 6932.12 Return to tract and start to 50 meters with wire checks by bridge
288.783 0.000 0.000 48 47 15 288 18:48 25 meters, wire ok
288.786 0.000 0.000 48 47 15 288 18:52 50 meters, wire ok
288.790 0.000 0.000 48 47 15 288 18:57 75 meters, wire ok
288.792 42.279 69.565 48 47 15 288 19:00 4216.72 6933.87 90 meters, TOWYO UP (wire not ok, headed under ship)
288.797 0.000 0.000 48 47 15 288 19:07 50 meters
288.801 0.000 0.000 48 47 15 288 19:14 15 meters
288.802 42.282 69.602 48 47 15 288 19:15 4216.90 6936.10 TOWYO DOWN, ctenophores, SCRCAPa
288.808 42.283 69.613 48 47 15 288 19:24 4217.00 6936.80 50 meters
288.813 42.285 69.626 48 47 15 288 19:31 4217.08 6937.56 80 meters
288.824 42.289 69.660 48 47 15 288 19:47 4217.33 6939.59 sit @surface, SCRCAP
288.826 42.289 69.664 48 47 15 288 19:49 4217.35 6939.82 Begin S2881949, down to 210 meters
288.851 42.298 69.741 48 47 15 288 20:26 4217.89 6944.46 TOWYO UP
288.861 42.302 69.765 63 49 48 15 288 20:40 4218.14 6945.91 Top of ascent. Came out of water. New VPR Tape. Hold at sfc for turn to south. Close file S2881949. Open file S2882043.
288.866 42.298 69.770 63 49 48 15 288 20:47 4217.85 6946.21 Turn on new course for turning point 20. Commencing tow. Large surface patch.
288.883 42.274 69.767 63 49 48 15 288 21:12 4216.44 6946.00 Begin ascent at 220m.
288.900 42.244 69.761 63 49 48 15 288 21:36 4214.64 6945.69 Top of ascent. Begin back down.
288.907 42.231 69.761 63 50 49 15 288 21:46 4213.88 6945.63 Replace DAT/VPR tapes to get tapes in sync. ~1 hour left on VPR tape.
288.919 42.214 69.759 63 50 49 15 288 22:03 4212.84 6945.54 Bottom of descent. 210/235m.
288.938 42.179 69.755 63 50 49 15 288 22:30 4210.75 6945.32 Errors @ 35m.
288.000 0.000 0.000 63 50 49 15 288 "Problems Encountered in Sending Stop Processing Command."
288.000 0.000 0.000 63 50 49 15 288 "Problems Getting Data from Echo Sounder."
288.000 0.000 0.000 63 50 49 15 288 "The System has been disabled. Check the Sounder-PC Network Connections."
288.000 0.000 0.000 63 50 49 15 288 Fish came out too high.
288.941 42.172 69.754 63 50 49 15 288 22:35 4210.31 6945.24 Exit program. Restart program. (Must have also started new file here.)
288.942 42.168 69.754 63 50 49 15 288 22:37 4210.11 6945.21 Start towyo down.
288.958 42.141 69.751 63 50 49 15 288 23:00 4208.44 6945.04 Bottom of towyo 194/215m.
288.971 42.122 69.748 63 50 49 15 288 23:18 4207.31 6944.87 Top of ascent. End File. Start New File: S2882319.
288.982 42.131 69.750 63 51 50 15 288 23:34 4207.86 6945.00 Change tapes. Start towyo down. (~15 minutes left on tapes.)
288.997 42.120 69.715 63 51 50 15 288 23:56 4207.22 6942.89 Bottom of towyo 195/220m.
289.008 42.111 69.693 63 51 50 16 289 00:11 4206.69 6941.57 Locked up the processing program-- REBOOT
289.015 42.106 69.679 63 51 50 16 289 00:21 4206.37 6940.74 begin S2890020
289.068 42.081 69.617 63 52 51 16 289 01:38 4204.85 6937.00 change DAT and VPR tapes
289.097 42.065 69.576 63 52 51 16 289 02:19 4203.91 6934.58 Moc on board
289.097 0.000 0.000 63 52 51 16 289 02:19 begin S2890221 TOWYO DOWN
289.126 42.036 69.499 63 52 51 16 289 03:01 4202.14 6929.95 TOWYO UP
289.147 42.013 69.442 63 52 51 16 289 03:32 4200.79 6926.54 TOWYO at surface
289.149 0.000 0.000 63 53 52 16 289 03:35 new DAT and VPR tapes
289.167 41.990 69.386 63 53 52 16 289 04:00 4159.43 6923.19 TOWYO UP
289.188 41.965 69.342 63 53 52 16 289 04:31 4157.91 6920.50 TOWYO AT SURFACE, begin S2890434
289.190 41.963 69.335 63 53 52 16 289 04:34 4157.78 6920.10 TOWYO DOWN to 75 meters
289.212 41.945 69.278 63 53 52 16 289 05:05 4156.69 6916.69 END TOWYO at 90 meters
289.239 41.921 69.211 63 53 52 16 289 05:44 4155.26 6912.66 END TOWYO from 90 meters down, close file bmp at 7 meters for transit
289.241 0.000 0.000 63 53 52 16 289 05:47 Begin S2890546
289.243 0.000 0.000 63 54 53 16 289 05:50 restarted tapes
289.247 0.000 0.000 63 54 53 16 289 05:56 Start turn, steam with fish at 7 meters toward SOLITON SURVEY (13 and 14)
289.278 0.000 0.000 63 54 53 16 289 06:40 Suns coming up, dat tapes running out.
289.296 42.032 69.102 63 54 53 16 289 07:06 4201.93 6906.14 Software locked up õ REBOOT, power down sonar
289.299 0.000 0.000 63 54 53 16 289 07:11 restart processing
289.325 42.090 69.048 63 54 53 16 289 07:48 4205.42 6902.86 wave structures and layers at 15, 130, 160 meters under fish
289.327 0.000 0.000 63 55 54 16 289 07:51 change VPR and DAT tapes
289.365 0.000 0.000 63 55 54 16 289 08:45 bottom dropping off with strong sSSC paralleling dropoff
289.417 42.269 68.885 63 56 55 16 289 10:00 4216.13 6853.07 tape change (bit late) lots of salps and siphs 15:10:00
289.501 42.414 68.750 63 57 56 16 289 12:02 4224.84 6844.99 tape change, at turn pt. 13, begin S2891201
289.523 42.416 68.749 63 57 56 16 289 12:33 4224.94 6844.91 total system RESTART after powerdown begin S2891240
289.585 42.431 68.733 63 58 57 16 289 14:02 4225.85 6843.98 tape change at turn pt. 13
289.650 42.336 68.679 63 58 57 16 289 15:36 4220.16 6840.75 BMP at surface in mid-SOLITON wave packet
289.667 42.311 68.667 63 58 57 16 289 16:00 4218.68 6840.01 turn 180 degrees to resample SOLITON
289.672 42.311 68.671 63 59 58 16 289 16:08 4218.68 6840.27 tape change begin S2891607, BMP to 50 meters
289.692 42.346 68.687 63 59 58 16 289 16:37 4220.75 6841.25 coming up on SOLITON again BMP@50 meters (47-56 meters) T structure from 15 at surface to 4 at 50 meters
289.697 42.456 68.692 63 59 58 16 289 16:44 4221.36 6841.53 Bridge RADAR: propagation wave packet at 310 degrees, 5 packets ahead
289.754 42.462 68.747 63 59 58 16 289 18:06 4227.35 6844.84 end of packet
289.756 42.486 68.751 63 60 59 16 289 18:08 4227.70 6845.03 tape replenishment
289.771 42.506 68.763 63 60 59 16 289 18:30 4229.17 6845.79 TOWYO DOWN from 50 meters
289.783 ERR 68.772 63 60 59 16 289 18:47 4230.37 6846.34 TOWYO UP from 171/200 (copepods deep)
289.786 0.000 0.000 63 60 59 16 289 18:52 wire rattling against hull; course mod.
289.790 0.000 0.000 63 60 59 16 289 18:58 45 meters siphonophore layer
289.794 42.527 68.782 63 60 59 16 289 19:03 4231.62 6846.92 TOWYO SURFACES, goes to 5 meters for 180 degree turn to track @25 meters
289.798 42.532 68.778 63 60 59 16 289 19:09 4231.90 6846.66 TURN to 139
289.800 42.529 68.775 63 60 59 16 289 19:12 4231.74 6846.48 begin S2891912, SCR CAP, TOWYO DOWN to 25 meters
289.838 42.476 68.756 63 60 59 16 289 20:06 4228.57 6845.34 approaching SOLITON, RADAR can see, we're on one, one ahead
289.843 42.470 68.751 63 61 62 16 289 20:14 4228.21 6845.04 tape change
289.938 0.000 0.000 63 62 61 16 289 22:30 late tape change
289.951 42.512 68.773 63 62 61 16 289 22:50 4230.70 6846.35 BMP on board, steaming for WHOI