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dc.contributor.authorHyatt, Jason  Concept link
dc.coverage.spatialMarguerite Bay
dc.coverage.spatialWestern Antarctic Peninsula
dc.date.accessioned2006-09-22T18:25:48Z
dc.date.available2006-09-22T18:25:48Z
dc.date.issued2006-09
dc.identifier.urihttps://hdl.handle.net/1912/1238
dc.descriptionSubmitted in partial fulfillment of the requirements of the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2006en
dc.description.abstractTwo years of moored oceanographic and automatic weather station data which span the winter ice seasons of 2001-2003 within Marguerite Bay on the western Antarctic Peninsula (wAP) shelf were collected as part of the Southern Ocean Global Ocean Ecosystems Dynamics program. In order to characterize the ice environment in the region, a novel methodology is developed for determining ice coverage, draft and velocity from moored upward-looking acoustic Doppler current profiler data. A linear momentum balance shows the importance of internal ice stresses in the observed motion of the ice pack. Strong inertial, not tidal, motions were observed in both the sea ice and upper ocean. Estimates of upward diapycnal fluxes of heat and salt from the Upper Circumpolar Deep Water to the surface mixed layer indicate almost no contribution from double diffusive convection. A one-dimensional vertical mixed layer model adapted for investigation of mixing beneath an ice-covered ocean indicates that the initial wind event, rather than subsequent inertial shear, causes the majority of the mixing. This work points towards episodic wind-forced shear at the base of the mixed layer coupled with static instability from brine rejection due to ice production as a major factor in mixing on the wAP shelf.en
dc.description.sponsorshipThe work described in this thesis was funded by the National Science Foundation Office of Polar Programs grant # 99-100092. Additional funding came from the MIT Houghton Fund, the WHOI Ocean Venture Fund and the WHOI Education Office.
dc.format.extent4150906 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherMassachusetts Institute of Technology and Woods Hole Oceanographic Institutionen
dc.relation.ispartofseriesWHOI Thesesen
dc.subjectSea iceen_US
dc.subjectOcean-atmosphere interactionen_US
dc.subjectNathaniel B. Palmer (Ship) Cruise NBP01-03en_US
dc.subjectLaurence M. Gould (Ship) Cruise LMG01-06en_US
dc.titleWind, sea ice, inertial oscillations and upper ocean mixing in Marguerite Bay, Western Antarctic Peninsula : observations and modelingen
dc.typeThesisen
dc.identifier.doi10.1575/1912/1238


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