Variability of currents in Great South Channel and over Georges Bank : observation and modeling


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dc.contributor.author Chen, Changsheng
dc.coverage.spatial Great South Channel
dc.coverage.spatial Georges Bank
dc.date.accessioned 2012-10-31T19:57:56Z
dc.date.available 2012-10-31T19:57:56Z
dc.date.issued 1992-06
dc.identifier.uri http://hdl.handle.net/1912/5494
dc.description Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June 1992 en_US
dc.description.abstract This thesis consists of two parts: (I) variability of currents and water properties in late spring in the northern Great South Channel and (II) numerical study of stratified tidal rectification over Georges Bank. In part I, the combined analysis of CTD, ADCP, satellite-track drifters, and zooplankton distributions in the northern Great South Channel clearly shows (1) the seasonal evolution of the surface low salinity plume, (2) the threedimensional structure of residual flow, and (3) a coherent relationship between the surface low salinity plume and high concentration of zooplankton. In part II, the numerical model of Georges Bank shows that as the fluid becomes stratified , tidal mixing and rectification intensify both along- and cross-bank residual currents and modify the vertical structure of the flow. Along- and cross-bank residual currents increase as either stratification increases or the depth of the bank decreases. Model results over Georges Bank are in good agreement with observation, particularly in the position of the tidal mixing front and residual currents on the northern flank of the Bank. en_US
dc.description.sponsorship This research was supported by the National Science Foundation under grants OCE 87-13988 and OCE 91-01034 and by the National Center for Atmospheric Research (NCAR) under computer time grants Nos. 35781029 and 35781035. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Massachusetts Institute of Technology and Woods Hole Oceanographic Institution en_US
dc.relation.ispartofseries WHOI Theses en_US
dc.subject Ocean currents en_US
dc.title Variability of currents in Great South Channel and over Georges Bank : observation and modeling en_US
dc.type Thesis en_US
dc.identifier.doi 10.1575/1912/5494

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