The Role of Eddies and Topography in the Export of Shelf Waters From the West Antarctic Peninsula Shelf

Oceanic heat strongly influences the glaciers and ice shelves along West Antarctica. Prior studies show that the subsurface onshore heat flux from the Southern Ocean on the shelf occurs through deep, glacially carved channels. The mechanisms enabling the export of colder shelf waters to the open oce...

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Bibliographic Details
Published in:Journal of Geophysical Research: Oceans
Main Authors: Brearler, J. Alexander, Moffat, Caelos, Venables, Hugh J., Meredith, Michael P., Dinniman, Michael S.
Format: Article in Journal/Newspaper
Language:unknown
Published: ODU Digital Commons 2019
Subjects:
Shelf-basin exchange
West Antarctic
Heat transport
Eddies
Oceanography
Antarctic
Southern Ocean
Antarctic Peninsula
West Antarctica
Marguerite
Antarc*
Antarctica
Ice Shelves
Online Access:https://digitalcommons.odu.edu/ccpo_pubs/322
https://doi.org/10.1029/2018JC014679
https://digitalcommons.odu.edu/context/ccpo_pubs/article/1326/viewcontent/Dinniman_role_of_eddies.pdf
Description
Summary:Oceanic heat strongly influences the glaciers and ice shelves along West Antarctica. Prior studies show that the subsurface onshore heat flux from the Southern Ocean on the shelf occurs through deep, glacially carved channels. The mechanisms enabling the export of colder shelf waters to the open ocean, however, have not been determined. Here, we use ocean glider measurements collected near the mouth of Marguerite Trough (MT), west Antarctic Peninsula, to reveal shelf‐modified cold waters on the slope over a deep (2,700 m) offshore topographic bank. The shelf hydrographic sections show subsurface cold features (θ

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