Michigan Technological
University
Department of Physics
is pleased to announce a
University of Massachusetts
School for Marine Science and Technology
New Bedford, MA
SATELLITE-DERIVED SEA
SURFACE TEMPERATURE VARIABILITY AND VERTICALLY-INTEGRATED NITRATE OVER THE GULF
OF MAINE AND GEORGES BANK REGION DURING 1987
Satellite derived sea surface temperatures (SST) on southern
Georges Bank from 1987 show variability related to the variation of tidal
stirring associated with the spring-neap (monthly and fortnightly) tidal
cycle in both the seasonally-stratified and well-mixed regions of the Bank
(Bisagni and Sano, 1993). Recent work
shows similar variability for five
hydrographic provinces which encompass the entire Gulf of Maine region,
including all of Georges Bank, over the same 1987 time period, suggesting
some degree of tidally-related control of SST over this much larger domain.
Functional linear regressions computed between log-transformed integrated
nitrate (NO3) contained within the euphotic zone and near-surface
temperature for these same five hydrographic provinces allow computation of
the temporal variability of this biologically-active bulk quantity related
to the variation in tidal stirring. Variations in SST at lower wintertime
and spring temperatures result in larger variations in integrated nitrate
than during periods of higher summer and fall temperatures due to the
semi-log nature of the regression equations.
Tuesday, November 13, 2001
Fisher Hall 139, 4:00 p.m.
Refreshments will be served