The MOCNESS is based on the Tucker Trawl principle (Tucker, 1951). The MOCNESS-1 has nine rectangular nets (1m x 1.4 m) which are opened and closed sequentially by commands through conducting cable from the surface. Environmental sensors to measure conductivity, temperature, and depth are attached to the net support frame. In addition, sensors to monitor flow past the net and the angle fo the net assembly from the vertical, and indicators to record the electrical and mechanical function of the opening/closing mechanism are present. All data are transmitted to the surface via the cable for recording on magnetic tape and digital display. The data may also be fed into a computer for real time processing and plotting. A field performance study has demonstrated that MONESS can provide either eight stratified oblique samples or eight serial horizontal samples per tow at a substantial savings in time over other opening/closing systems while also obtaining environmental data. (Wiebe et al., 1976)

Cruise and tow specific notes are available. Click on the appropriate link.

- at85
- at110
- ch125
- en11
- kn53
- kn62
- kn65
- kn71

Unless otherwise indicated, these data have not been post-processed. Spikes have not yet been removed. Anyone wishing to use these data in this preliminary form is urged to contact the contributors.

For additional information, contact Nancy Copley (ncopley@whoi.edu) or Peter Wiebe (pwiebe@whoi.edu)

Note: Some variables have been eliminated from the display or renamed something else, but are nevertheless available. These variables include: id_tag, raw_PR, raw_TE, raw_CO, raw_OT, raw_OC, raw_AN, raw_AN_FL, NR, LI, raw_FL, start_date, end_date, local_end_time, end_year, end_month, end_day, GMT_end_time, end_lat, end_lon, abort_flag, quality_flag, seconds, maybe_PR, maybe_TE, maybe_CO, maybe_AN, and time_zone_info. Contact the contributors for this information.

These Cold Core Rings data are organized by Cruise and therefore the CruiseID is at the directory level, identified by a lower-case ID, e.g. at85, for AtlantisII cruise 85.

GLOBEC Field Name | Description | Original Field Name
--- | --- | ---
tow | Tow number | tow
station | station number | station
year | Year | start_year
month | Month of year, 1-12 | start_month
day | Day of month, 1-31 | start_day
time_gmt | Greenwich Mean Time using 24 hour clock. | GMT_time_start
time_local | local time using 24 hour clock. | local_time_start
lat | latitude, negative=south; in decimal degrees | start_lat
lon | longitude, negative=west; in decimal degrees | start_lon
n_sync_errors | synchronization errors |
record_number | Record number |
time | time at start of the record, in decimal hours (24 hour clock) |
scans_lost | Number of scans lost |
press | pressure, in millibars Contributor's Note: Should be decibars (njc, 9/12/03) | PR
temp | temperature, in degrees C | TE
cond_mM | conductivity, in millimhos | CO
angle | angle of net frame relative to vertical (0-89 degrees) | AN
oxycurrent | Oxygen current, in milliamps | OC
oxytemp | Oxygen temperature, in degrees C | OT
flow | consecutive flow counts, one count equals 4.7 meters traveled | FL
net | sequential MOCNESS net number | NC

## References

Tucker, G.H., 1951. Relation of fishes and other organisms to the scattering of underwater sound. Journal of Marine Research, 10: 215-238.

Wiebe, P.H., K.H. Burt, S. H. Boyd, A.W. Morton, 1976. The multiple opening/closing net and environmental sensing system for sampling zooplankton. Journal of Marine Research, 34(3): 313-326