DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA
The Amundsen Sea Polynya International Research Expedition (ASPIRE) (Dec 2010 - Jan 2011) investigated high latitude (71-75S, 110-120W) ocean dynamics to better understand the polynya's high biological production. Hydrographic and dFe data from Conductivity-Temperature-Depth (CTD) measurements...
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eScholarship, University of California
2012
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ftcdlib:oai:escholarship.org/ark:/13030/qt9th0d8xv 2023-05-15T13:23:36+02:00 DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA Randall-Goodwin, Evan Stammerjohn, Sharon S 2012-01-01 application/pdf https://escholarship.org/uc/item/9th0d8xv en eng eScholarship, University of California qt9th0d8xv https://escholarship.org/uc/item/9th0d8xv public Physical oceanography Amundsen Sea Circumpolar Deep Water Dotson Ice Shelf iceberg meltwater polynya etd 2012 ftcdlib 2019-12-06T23:53:03Z The Amundsen Sea Polynya International Research Expedition (ASPIRE) (Dec 2010 - Jan 2011) investigated high latitude (71-75S, 110-120W) ocean dynamics to better understand the polynya's high biological production. Hydrographic and dFe data from Conductivity-Temperature-Depth (CTD) measurements highlight a melt-laden outflow emanating from the Dotson Ice Shelf (DIS) and flowing between 400-600 m throughout the Dotson trough. Observations in the polynya near icebergs show water mass mixing of meltwater and Circumpolar Deep Water and elevated concentrations of dFe, indicating that drifting icebergs could deliver iron into the mixed layer either from in situ melt or by mixing up melt-laden outflow waters from the DIS. Time series data at the DIS outflow indicate warming since 2007. Although nearby Pine Island Glacier (PIG) outflow is overall warmer and saltier than DIS outflow, calculated meltwater fractions show similar relative quantities of meltwater from both PIG and DIS. Other/Unknown Material Amundsen Sea Antarc* Antarctica Dotson Ice Shelf Ice Shelf Pine Island Pine Island Glacier West Antarctica University of California: eScholarship Amundsen Sea Dotson Ice Shelf ENVELOPE(-112.367,-112.367,-74.400,-74.400) Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) West Antarctica |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Physical oceanography Amundsen Sea Circumpolar Deep Water Dotson Ice Shelf iceberg meltwater polynya |
spellingShingle |
Physical oceanography Amundsen Sea Circumpolar Deep Water Dotson Ice Shelf iceberg meltwater polynya Randall-Goodwin, Evan DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA |
topic_facet |
Physical oceanography Amundsen Sea Circumpolar Deep Water Dotson Ice Shelf iceberg meltwater polynya |
description |
The Amundsen Sea Polynya International Research Expedition (ASPIRE) (Dec 2010 - Jan 2011) investigated high latitude (71-75S, 110-120W) ocean dynamics to better understand the polynya's high biological production. Hydrographic and dFe data from Conductivity-Temperature-Depth (CTD) measurements highlight a melt-laden outflow emanating from the Dotson Ice Shelf (DIS) and flowing between 400-600 m throughout the Dotson trough. Observations in the polynya near icebergs show water mass mixing of meltwater and Circumpolar Deep Water and elevated concentrations of dFe, indicating that drifting icebergs could deliver iron into the mixed layer either from in situ melt or by mixing up melt-laden outflow waters from the DIS. Time series data at the DIS outflow indicate warming since 2007. Although nearby Pine Island Glacier (PIG) outflow is overall warmer and saltier than DIS outflow, calculated meltwater fractions show similar relative quantities of meltwater from both PIG and DIS. |
author2 |
Stammerjohn, Sharon S |
format |
Other/Unknown Material |
author |
Randall-Goodwin, Evan |
author_facet |
Randall-Goodwin, Evan |
author_sort |
Randall-Goodwin, Evan |
title |
DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA |
title_short |
DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA |
title_full |
DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA |
title_fullStr |
DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA |
title_full_unstemmed |
DETECTING MELTWATER IN THE AMUNDSEN SEA POLYNYA REGION, WEST ANTARCTICA |
title_sort |
detecting meltwater in the amundsen sea polynya region, west antarctica |
publisher |
eScholarship, University of California |
publishDate |
2012 |
url |
https://escholarship.org/uc/item/9th0d8xv |
long_lat |
ENVELOPE(-112.367,-112.367,-74.400,-74.400) ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Amundsen Sea Dotson Ice Shelf Pine Island Glacier West Antarctica |
geographic_facet |
Amundsen Sea Dotson Ice Shelf Pine Island Glacier West Antarctica |
genre |
Amundsen Sea Antarc* Antarctica Dotson Ice Shelf Ice Shelf Pine Island Pine Island Glacier West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Dotson Ice Shelf Ice Shelf Pine Island Pine Island Glacier West Antarctica |
op_relation |
qt9th0d8xv https://escholarship.org/uc/item/9th0d8xv |
op_rights |
public |
_version_ |
1766373453399588864 |