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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2008
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Online Access: | https://epic.awi.de/id/eprint/25479/ https://epic.awi.de/id/eprint/25479/1/2008_Modelling_Circumpolar_Deep_Water_intrusions_on_the_Amundsen_Sea_continental_shelf_Antarctica.pdf https://doi.org/10.1029/2008GL034939 https://hdl.handle.net/10013/epic.38528 https://hdl.handle.net/10013/epic.38528.d001 |
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ftawi:oai:epic.awi.de:25479 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 application/pdf https://epic.awi.de/id/eprint/25479/ https://epic.awi.de/id/eprint/25479/1/2008_Modelling_Circumpolar_Deep_Water_intrusions_on_the_Amundsen_Sea_continental_shelf_Antarctica.pdf https://doi.org/10.1029/2008GL034939 https://hdl.handle.net/10013/epic.38528 https://hdl.handle.net/10013/epic.38528.d001 unknown https://epic.awi.de/id/eprint/25479/1/2008_Modelling_Circumpolar_Deep_Water_intrusions_on_the_Amundsen_Sea_continental_shelf_Antarctica.pdf https://hdl.handle.net/10013/epic.38528.d001 Thoma, M. orcid:0000-0002-4033-3905 , Jenkins, A. , Holland, D. and Jacobs, S. (2008) Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica , Geophysical Research Letters, 35 (18) . doi:10.1029/2008GL034939 <https://doi.org/10.1029/2008GL034939> , hdl:10013/epic.38528 EPIC3Geophysical Research Letters, 35(18), ISSN: 0094-8276 Article isiRev 2008 ftawi https://doi.org/10.1029/2008GL034939 2021-12-24T15:35:25Z 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 west and 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Amundsen Sea Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) Geophysical Research Letters 35 18 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 west and 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 |
spellingShingle |
Thoma, Malte Jenkins, Adrian Holland, David Jacobs, Stan Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica |
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 |
publishDate |
2008 |
url |
https://epic.awi.de/id/eprint/25479/ https://epic.awi.de/id/eprint/25479/1/2008_Modelling_Circumpolar_Deep_Water_intrusions_on_the_Amundsen_Sea_continental_shelf_Antarctica.pdf https://doi.org/10.1029/2008GL034939 https://hdl.handle.net/10013/epic.38528 https://hdl.handle.net/10013/epic.38528.d001 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) |
geographic |
Amundsen Sea Pine Island Glacier Island Bay Pine Island Bay |
geographic_facet |
Amundsen Sea Pine Island Glacier Island Bay Pine Island Bay |
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_source |
EPIC3Geophysical Research Letters, 35(18), ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/25479/1/2008_Modelling_Circumpolar_Deep_Water_intrusions_on_the_Amundsen_Sea_continental_shelf_Antarctica.pdf https://hdl.handle.net/10013/epic.38528.d001 Thoma, M. orcid:0000-0002-4033-3905 , Jenkins, A. , Holland, D. and Jacobs, S. (2008) Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica , Geophysical Research Letters, 35 (18) . doi:10.1029/2008GL034939 <https://doi.org/10.1029/2008GL034939> , hdl:10013/epic.38528 |
op_doi |
https://doi.org/10.1029/2008GL034939 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
18 |
_version_ |
1766373279729188864 |