Oceanic heat transport onto the Amundsen Sea shelf through a submarine glacial trough

Glaciers which drain the West Antarctic Ice Sheet (WAIS) into the Amundsen Sea are accelerating and thinning rapidly. These observations have been attributed to the regional oceanography whereby heat contained within Circumpolar Deep Water (CDW) drives the basal melting of floating glaciers. On the...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Walker,, Dziga P., Brandon, Mark A., Jenkins, Adrian, Allen, John T., Dowdeswell, Julian A., Evans, Jeff
Format: Article in Journal/Newspaper
Language:English
Published: 2007
Subjects:
Antarctic
The Antarctic
Amundsen Sea
West Antarctic Ice Sheet
Antarc*
Ice Sheet
Online Access:https://oro.open.ac.uk/8714/
https://oro.open.ac.uk/8714/1/Walker_Brandon_et_al_GRL_2007.pdf
Description
Summary:Glaciers which drain the West Antarctic Ice Sheet (WAIS) into the Amundsen Sea are accelerating and thinning rapidly. These observations have been attributed to the regional oceanography whereby heat contained within Circumpolar Deep Water (CDW) drives the basal melting of floating glaciers. On the basis of new data we calculate that 2.8 terra-Watts (1012) of oceanic heat flow onto the continental shelf and toward the glaciers via a submarine glacial trough. This is enough to account for most of the basal melting in the entire region suggesting the ocean is supplying an excess of heat toward the Antarctic continent.

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