Bisagni, J.J.1
1Center for Marine Science and Technology, University of
Massashusetts, North Dartmouth, MA 02747
Digitized monthly tidal-mixing front (TMF) locations were
hand-digitized from each of 12 published long-term monthly-mean
satellite-derived sea surface temperature TMF maps from Georges
Bank. Results of an animation show the seasonal change in the
position of the TMF, with the TMF located over deeper depths during
colder months and merging with the shelf slope front (SSF) during
winter, and than moving steadily on-Bank during the warmer months
when Bank-wide stratification is present. TMF loci from the months
of March, May, and August were selected to represent the locations
of the TMF during wintertime mixed, springtime
episodically-stratified, and summertime stratified periods,
respectively. March, May, and August TMF loci are also used to
define crest, inner and outer Georges Bank regions that are then
used to bin hydrographic and nutrient (nitrate) station data
contained in a quality-controlled database produced by investigators
from Bedford Institute of Oceanography and than merged with the
US-GLOBEC Georges Bank broad-scale nutrient data set from the
University of Maine. Spatial and temporal "binning" of the
hydrographic and nitrate data is then used to develop a
vertically-integrated nitrate climatology for Georges Bank. This
climatology will assist in an investigation of the Georges Bank
energy budget by considering both new and recycled primary
production and their spatial and temporal heterogeneity.
A powerpoint version and an html version of this presentation are available on-line.
(Note: Animations included in html versions of Powerpoint presentations will likely work with Internet Explorer but will not work with Netscape 7.x.