Cross-Frontal Exchange and Scotian Shelf Cross-over Workshops 10-12 October, 2000 Holiday Inn, Falmouth, Massachusetts |
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Overview
Cross-Frontal Exchange
Presentations
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Seasonal SST Frontal Climatologies on Georges Bank Jim Bisagni (SMAST) 1) Literature/historical data show < 32.0 PSU surface waters on eastern Georges Bank (GB) and southern flank of GB during late winter-spring. Moreover, Sea Surface Temperature (SST) frontal probability climatologies show evidence of cross overs during the months of January through March (Figs E1, E2 below). ![]() ![]() 2) There appears to be large interannual variability in magnitude of Scotian Shelf Water (SSW) cross-over events. ![]() ![]() ![]() ![]() 3) Dynamical mechanism(s) causing the SSW cross-over is elusive. ![]() ![]() References: Bisagni, J.J. and M.H. Sano. 1993. Satellite observations of short time scale sea surface temperature variability on southern Georges Bank. Cont. Shelf Res., 13, 1045-1064. Bisagni, J.J., R.C. Beardsley, C.M. Ruhsam, J.P. Manning, and W. Williams. 1996. Historical and recent evidence concerning the presence of Scotian Shelf water on southern Georges Bank. Deep-Sea Res., 43, 1439-1471. Bisagni, J.J., and P.C. Smith. 1998. Eddy-induced flow of Scotian Shelf water across Northeast Channel, Gulf of Maine. Cont. Shelf Res.,18, 515-539. Williams, W.J. 1995. The adjustment of barotropic currents at the shelf break to a sharp bend in the shelf topography. M.S. Thesis, MIT/WHOI Joint Program, Cambridge, MA. ![]() Figure E1. Climatological SST frontal probability for the month of January (1985-96) ![]() Figure E2. Climatological SST frontal probability for the month of March (1985-96) ![]() Figure E3. SST evidence for Scotian Shelf cross-over induced by a cyclonic eddy in Northeast Channel. |