Show simple item record

dc.contributor.authorMoffat, Carlos F.  Concept link
dc.contributor.authorOwens, W. Brechner  Concept link
dc.contributor.authorBeardsley, Robert C.  Concept link
dc.date.accessioned2010-06-16T19:53:34Z
dc.date.available2010-06-16T19:53:34Z
dc.date.issued2009-05-19
dc.identifier.citationJournal of Geophysical Research 114 (2009): C05017en_US
dc.identifier.urihttps://hdl.handle.net/1912/3664
dc.descriptionAuthor Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 114 (2009): C05017, doi:10.1029/2008JC004955.en_US
dc.description.abstractHydrographic and current velocity observations collected from March 2001 to February 2003 on the west Antarctic Peninsula shelf as part of the Southern Ocean Global Ecosystems Dynamics program are used to characterize intrusions of Upper Circumpolar Deep Water (UCDW) and Lower Circumpolar Deep Water (LCDW) onto the shelf and Marguerite Bay. UCDW is found on the middle and outer shelf along Marguerite Trough, which connects the shelf break to Marguerite Bay, and at another location farther south. UCDW intrudes in the form of frequent (four per month) and small horizontal scales (≈4 km) warm eddy-like structures with maximum vertical scales of a few hundred meters. However, no evidence of UCDW intrusions was found in Marguerite Bay. LCDW was found in several deep depressions connected to the shelf break, including Marguerite Trough, forming a tongue of relatively dense water 95 m thick (on average) that reaches into Marguerite Bay through Marguerite Trough. A steady advective-diffusive balance for the LCDW intrusion is used to make an estimation of the average upwelling rate and diffusivity in the deep layer within Marguerite Trough, which suggest the LCDW layer is renewed approximately every six weeks.en_US
dc.description.sponsorshipThis work was supported by the National Science Foundation Office of Polar programs through U.S. Southern Ocean GLOBEC grants OPP 99- 10092 and 06-23223. C. Moffat also received support from the Chilean government through its Presidential Fellowship program and the Coastal Ocean Institute at WHOI and the Cooperative Institute for Climate and Ocean Research at WHOI.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2008JC004955
dc.subjectCoastal oceanographyen_US
dc.subjectPolar oceanen_US
dc.titleOn the characteristics of Circumpolar Deep Water intrusions to the west Antarctic Peninsula Continental Shelfen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2008JC004955


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record