Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica
Results are presented from an isopycnic coordinate model of ocean circulation in the Amundsen Sea, focusing on the delivery of Circumpolar Deep Water (CDW) to the inner continental shelf around Pine Island Bay. The warmest waters to reach this region are channeled through a submarine trough, accesse...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2008
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/42262/ https://doi.org/10.1029/2008GL034939 https://nrl.northumbria.ac.uk/id/eprint/42262/1/Modelling%20Circumpolar%20Deep%20Water%20intrusions%20on%20the%20Amundsen%20Sea%20continental%20shelf,%20Antarctica.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:42262 2023-05-15T13:23:34+02:00 Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica Thoma, Malte Jenkins, Adrian Holland, David Jacobs, Stan 2008-09-18 text https://nrl.northumbria.ac.uk/id/eprint/42262/ https://doi.org/10.1029/2008GL034939 https://nrl.northumbria.ac.uk/id/eprint/42262/1/Modelling%20Circumpolar%20Deep%20Water%20intrusions%20on%20the%20Amundsen%20Sea%20continental%20shelf,%20Antarctica.pdf en eng American Geophysical Union https://nrl.northumbria.ac.uk/id/eprint/42262/1/Modelling%20Circumpolar%20Deep%20Water%20intrusions%20on%20the%20Amundsen%20Sea%20continental%20shelf,%20Antarctica.pdf Thoma, Malte, Jenkins, Adrian, Holland, David and Jacobs, Stan (2008) Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica. Geophysical Research Letters, 35 (18). L18602. ISSN 0094-8276 F700 Ocean Sciences Article PeerReviewed 2008 ftunivnorthumb https://doi.org/10.1029/2008GL034939 2022-09-25T06:11:31Z Results are presented from an isopycnic coordinate model of ocean circulation in the Amundsen Sea, focusing on the delivery of Circumpolar Deep Water (CDW) to the inner continental shelf around Pine Island Bay. The warmest waters to reach this region are channeled through a submarine trough, accessed via bathymetric irregularities along the shelf break. Temporal variability in the influx of CDW is related to regional wind forcing. Easterly winds over the shelf edge change to westerlies when the Amundsen Sea Low migrates westand south in winter/ spring. This drives seasonal on-shelf flow, while inter-annual changes in the wind forcing lead to inflow variability on a decadal timescale. A modelled period of warming following low CDW influx in the late 1980's and early 1990's coincides with a period of observed thinning and acceleration of Pine Island Glacier. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay Pine Island Glacier Northumbria University, Newcastle: Northumbria Research Link (NRL) Amundsen Sea Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Geophysical Research Letters 35 18 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F700 Ocean Sciences |
spellingShingle |
F700 Ocean Sciences Thoma, Malte Jenkins, Adrian Holland, David Jacobs, Stan Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
topic_facet |
F700 Ocean Sciences |
description |
Results are presented from an isopycnic coordinate model of ocean circulation in the Amundsen Sea, focusing on the delivery of Circumpolar Deep Water (CDW) to the inner continental shelf around Pine Island Bay. The warmest waters to reach this region are channeled through a submarine trough, accessed via bathymetric irregularities along the shelf break. Temporal variability in the influx of CDW is related to regional wind forcing. Easterly winds over the shelf edge change to westerlies when the Amundsen Sea Low migrates westand south in winter/ spring. This drives seasonal on-shelf flow, while inter-annual changes in the wind forcing lead to inflow variability on a decadal timescale. A modelled period of warming following low CDW influx in the late 1980's and early 1990's coincides with a period of observed thinning and acceleration of Pine Island Glacier. |
format |
Article in Journal/Newspaper |
author |
Thoma, Malte Jenkins, Adrian Holland, David Jacobs, Stan |
author_facet |
Thoma, Malte Jenkins, Adrian Holland, David Jacobs, Stan |
author_sort |
Thoma, Malte |
title |
Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
title_short |
Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
title_full |
Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
title_fullStr |
Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
title_full_unstemmed |
Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
title_sort |
modelling circumpolar deep water intrusions on the amundsen sea continental shelf, antarctica |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://nrl.northumbria.ac.uk/id/eprint/42262/ https://doi.org/10.1029/2008GL034939 https://nrl.northumbria.ac.uk/id/eprint/42262/1/Modelling%20Circumpolar%20Deep%20Water%20intrusions%20on%20the%20Amundsen%20Sea%20continental%20shelf,%20Antarctica.pdf |
long_lat |
ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Amundsen Sea Island Bay Pine Island Bay Pine Island Glacier |
geographic_facet |
Amundsen Sea Island Bay Pine Island Bay Pine Island Glacier |
genre |
Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay Pine Island Glacier |
genre_facet |
Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay Pine Island Glacier |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/42262/1/Modelling%20Circumpolar%20Deep%20Water%20intrusions%20on%20the%20Amundsen%20Sea%20continental%20shelf,%20Antarctica.pdf Thoma, Malte, Jenkins, Adrian, Holland, David and Jacobs, Stan (2008) Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica. Geophysical Research Letters, 35 (18). L18602. ISSN 0094-8276 |
op_doi |
https://doi.org/10.1029/2008GL034939 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
18 |
_version_ |
1766373272683806720 |