Physical oceanography from the northwestern Weddell Sea

We analyzed hydrographic data from the northwestern Weddell Sea continental shelf of the three austral winters 1989, 1997, and 2006 and two summers following the last winter cruise. During summer a thermal front exists at ~64° S separating cold southern waters from warm northern waters that have sim...

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Main Authors: Hellmer, Hartmut H, Huhn, Oliver, Gomis, Damià, Timmermann, Ralph
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2011
Subjects:
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.761004
https://doi.org/10.1594/PANGAEA.761004
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spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.761004 2024-09-15T17:41:24+00:00 Physical oceanography from the northwestern Weddell Sea Hellmer, Hartmut H Huhn, Oliver Gomis, Damià Timmermann, Ralph MEDIAN LATITUDE: -58.607187 * MEDIAN LONGITUDE: -22.293824 * SOUTH-BOUND LATITUDE: -71.115000 * WEST-BOUND LONGITUDE: -66.282000 * NORTH-BOUND LATITUDE: -37.016600 * EAST-BOUND LONGITUDE: 38.996800 * DATE/TIME START: 1989-09-10T07:28:00 * DATE/TIME END: 2009-02-26T21:59:00 2011 application/zip, 8 datasets https://doi.pangaea.de/10.1594/PANGAEA.761004 https://doi.org/10.1594/PANGAEA.761004 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.761004 https://doi.org/10.1594/PANGAEA.761004 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Hellmer, Hartmut H; Huhn, Oliver; Gomis, Damià; Timmermann, Ralph (2011): On the freshening of the northwestern Weddell Sea continental shelf. Ocean Science, 7(3), 305-316, https://doi.org/10.5194/os-7-305-2011 06AQANTIX_2/100-1 06AQANTIX_2/101-1 06AQANTIX_2/102-1 06AQANTIX_2/103-1 06AQANTIX_2/104-1 06AQANTIX_2/105-1 06AQANTIX_2/106-1 06AQANTIX_2/108-1 06AQANTIX_2/108-2 06AQANTIX_2/109-1 06AQANTIX_2/113-1 06AQANTIX_2/114-2 06AQANTIX_2/115-1 06AQANTIX_2/115-2 06AQANTIX_2/35-1 06AQANTIX_2/36-1 06AQANTIX_2/39-1 06AQANTIX_2/40-1 06AQANTIX_2/41-1 06AQANTIX_2/42-1 06AQANTIX_2/43-1 06AQANTIX_2/44-1 06AQANTIX_2/45-1 06AQANTIX_2/45-2 06AQANTIX_2/46-1 06AQANTIX_2/47-1 06AQANTIX_2/48-1 06AQANTIX_2/48-2 06AQANTIX_2/49-1 06AQANTIX_2/50-1 06AQANTIX_2/51-1 06AQANTIX_2/53-1 06AQANTIX_2/55-1 06AQANTIX_2/56-1 06AQANTIX_2/56-2 06AQANTIX_2/57-1 06AQANTIX_2/58-1 06AQANTIX_2/59-1 06AQANTIX_2/60-1 06AQANTIX_2/61-1 06AQANTIX_2/62-1 06AQANTIX_2/63-1 06AQANTIX_2/63-2 06AQANTIX_2/64-1 06AQANTIX_2/65-1 06AQANTIX_2/66-1 06AQANTIX_2/67-1 06AQANTIX_2/68-1 06AQANTIX_2/69-1 06AQANTIX_2/70-1 dataset publication series 2011 ftpangaea https://doi.org/10.1594/PANGAEA.76100410.5194/os-7-305-2011 2024-08-21T00:02:25Z We analyzed hydrographic data from the northwestern Weddell Sea continental shelf of the three austral winters 1989, 1997, and 2006 and two summers following the last winter cruise. During summer a thermal front exists at ~64° S separating cold southern waters from warm northern waters that have similar characteristics as the deep waters of the central basin of the Bransfield Strait. In winter, the whole continental shelf exhibits southern characteristics with high Neon (Ne) concentrations, indicating a significant input of glacial melt water. The comparison of the winter data from the shallow shelf off the tip of the Antarctic Peninsula, spanning a period of 17 yr, shows a salinity decrease of 0.09 for the whole water column, which has a residence time of <1 yr. We interpret this freshening as being caused by a combination of reduced salt input due to a southward sea ice retreat and higher precipitation during the late 20th century on the western Weddell Sea continental shelf. However, less salinification might also result from a delicate interplay between enhanced salt input due to sea ice formation in coastal areas formerly occupied by Larsen A and B ice shelves and increased Larsen C ice loss. Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Bransfield Strait Ice Shelves Sea ice Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-66.282000,38.996800,-37.016600,-71.115000)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
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06AQANTIX_2/62-1
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06AQANTIX_2/64-1
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06AQANTIX_2/67-1
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06AQANTIX_2/70-1
spellingShingle 06AQANTIX_2/100-1
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06AQANTIX_2/64-1
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06AQANTIX_2/66-1
06AQANTIX_2/67-1
06AQANTIX_2/68-1
06AQANTIX_2/69-1
06AQANTIX_2/70-1
Hellmer, Hartmut H
Huhn, Oliver
Gomis, Damià
Timmermann, Ralph
Physical oceanography from the northwestern Weddell Sea
topic_facet 06AQANTIX_2/100-1
06AQANTIX_2/101-1
06AQANTIX_2/102-1
06AQANTIX_2/103-1
06AQANTIX_2/104-1
06AQANTIX_2/105-1
06AQANTIX_2/106-1
06AQANTIX_2/108-1
06AQANTIX_2/108-2
06AQANTIX_2/109-1
06AQANTIX_2/113-1
06AQANTIX_2/114-2
06AQANTIX_2/115-1
06AQANTIX_2/115-2
06AQANTIX_2/35-1
06AQANTIX_2/36-1
06AQANTIX_2/39-1
06AQANTIX_2/40-1
06AQANTIX_2/41-1
06AQANTIX_2/42-1
06AQANTIX_2/43-1
06AQANTIX_2/44-1
06AQANTIX_2/45-1
06AQANTIX_2/45-2
06AQANTIX_2/46-1
06AQANTIX_2/47-1
06AQANTIX_2/48-1
06AQANTIX_2/48-2
06AQANTIX_2/49-1
06AQANTIX_2/50-1
06AQANTIX_2/51-1
06AQANTIX_2/53-1
06AQANTIX_2/55-1
06AQANTIX_2/56-1
06AQANTIX_2/56-2
06AQANTIX_2/57-1
06AQANTIX_2/58-1
06AQANTIX_2/59-1
06AQANTIX_2/60-1
06AQANTIX_2/61-1
06AQANTIX_2/62-1
06AQANTIX_2/63-1
06AQANTIX_2/63-2
06AQANTIX_2/64-1
06AQANTIX_2/65-1
06AQANTIX_2/66-1
06AQANTIX_2/67-1
06AQANTIX_2/68-1
06AQANTIX_2/69-1
06AQANTIX_2/70-1
description We analyzed hydrographic data from the northwestern Weddell Sea continental shelf of the three austral winters 1989, 1997, and 2006 and two summers following the last winter cruise. During summer a thermal front exists at ~64° S separating cold southern waters from warm northern waters that have similar characteristics as the deep waters of the central basin of the Bransfield Strait. In winter, the whole continental shelf exhibits southern characteristics with high Neon (Ne) concentrations, indicating a significant input of glacial melt water. The comparison of the winter data from the shallow shelf off the tip of the Antarctic Peninsula, spanning a period of 17 yr, shows a salinity decrease of 0.09 for the whole water column, which has a residence time of <1 yr. We interpret this freshening as being caused by a combination of reduced salt input due to a southward sea ice retreat and higher precipitation during the late 20th century on the western Weddell Sea continental shelf. However, less salinification might also result from a delicate interplay between enhanced salt input due to sea ice formation in coastal areas formerly occupied by Larsen A and B ice shelves and increased Larsen C ice loss.
format Other/Unknown Material
author Hellmer, Hartmut H
Huhn, Oliver
Gomis, Damià
Timmermann, Ralph
author_facet Hellmer, Hartmut H
Huhn, Oliver
Gomis, Damià
Timmermann, Ralph
author_sort Hellmer, Hartmut H
title Physical oceanography from the northwestern Weddell Sea
title_short Physical oceanography from the northwestern Weddell Sea
title_full Physical oceanography from the northwestern Weddell Sea
title_fullStr Physical oceanography from the northwestern Weddell Sea
title_full_unstemmed Physical oceanography from the northwestern Weddell Sea
title_sort physical oceanography from the northwestern weddell sea
publisher PANGAEA
publishDate 2011
url https://doi.pangaea.de/10.1594/PANGAEA.761004
https://doi.org/10.1594/PANGAEA.761004
op_coverage MEDIAN LATITUDE: -58.607187 * MEDIAN LONGITUDE: -22.293824 * SOUTH-BOUND LATITUDE: -71.115000 * WEST-BOUND LONGITUDE: -66.282000 * NORTH-BOUND LATITUDE: -37.016600 * EAST-BOUND LONGITUDE: 38.996800 * DATE/TIME START: 1989-09-10T07:28:00 * DATE/TIME END: 2009-02-26T21:59:00
long_lat ENVELOPE(-66.282000,38.996800,-37.016600,-71.115000)
genre Antarc*
Antarctic
Antarctic Peninsula
Bransfield Strait
Ice Shelves
Sea ice
Weddell Sea
genre_facet Antarc*
Antarctic
Antarctic Peninsula
Bransfield Strait
Ice Shelves
Sea ice
Weddell Sea
op_source Supplement to: Hellmer, Hartmut H; Huhn, Oliver; Gomis, Damià; Timmermann, Ralph (2011): On the freshening of the northwestern Weddell Sea continental shelf. Ocean Science, 7(3), 305-316, https://doi.org/10.5194/os-7-305-2011
op_relation https://doi.pangaea.de/10.1594/PANGAEA.761004
https://doi.org/10.1594/PANGAEA.761004
op_rights CC-BY-3.0: Creative Commons Attribution 3.0 Unported
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.1594/PANGAEA.76100410.5194/os-7-305-2011
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