Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica
Satellite images have suggested the presence of winter open water, or a polynya, off the Riiser-Larsen Peninsula (around 68.5°S, 35.0°E) in East Dronning Maud Land, Antarctica. To ascertain evidence for polynya formation and to survey thermal structures, the 41st Japanese Antarctic Research Expediti...
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ftdoajarticles:oai:doaj.org/article:8afcfccd8bda4c1bb2dbf3ac11f6b2c7 2023-05-15T13:38:04+02:00 Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica Shuki Ushio 2006-07-01T00:00:00Z https://doi.org/10.15094/00009363 https://doaj.org/article/8afcfccd8bda4c1bb2dbf3ac11f6b2c7 EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00009363 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00009363 0085-7289 2432-079X https://doaj.org/article/8afcfccd8bda4c1bb2dbf3ac11f6b2c7 Antarctic Record, Vol 50, Iss 2, Pp 132-141 (2006) Geography (General) G1-922 article 2006 ftdoajarticles https://doi.org/10.15094/00009363 2022-12-31T12:27:52Z Satellite images have suggested the presence of winter open water, or a polynya, off the Riiser-Larsen Peninsula (around 68.5°S, 35.0°E) in East Dronning Maud Land, Antarctica. To ascertain evidence for polynya formation and to survey thermal structures, the 41st Japanese Antarctic Research Expedition executed aircraft observations in 2000-2001. The observations have verified that the polynya appeared and sea ice formed in the cold season. In the polynya region, water temperature profiles were measured using an Airborne-XBT device. It is found that the winter convective-mixed layer which cooled to its freezing point reached the depth of about 250 to 300 m. The mixed layer was thinner than that of another polynya located over the shelf break around 68.5°S, 39.0°E. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic Dronning Maud Land Riiser-Larsen ENVELOPE(50.667,50.667,-66.783,-66.783) Riiser-Larsen Peninsula ENVELOPE(34.000,34.000,-68.917,-68.917) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Shuki Ushio Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica |
topic_facet |
Geography (General) G1-922 |
description |
Satellite images have suggested the presence of winter open water, or a polynya, off the Riiser-Larsen Peninsula (around 68.5°S, 35.0°E) in East Dronning Maud Land, Antarctica. To ascertain evidence for polynya formation and to survey thermal structures, the 41st Japanese Antarctic Research Expedition executed aircraft observations in 2000-2001. The observations have verified that the polynya appeared and sea ice formed in the cold season. In the polynya region, water temperature profiles were measured using an Airborne-XBT device. It is found that the winter convective-mixed layer which cooled to its freezing point reached the depth of about 250 to 300 m. The mixed layer was thinner than that of another polynya located over the shelf break around 68.5°S, 39.0°E. |
format |
Article in Journal/Newspaper |
author |
Shuki Ushio |
author_facet |
Shuki Ushio |
author_sort |
Shuki Ushio |
title |
Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica |
title_short |
Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica |
title_full |
Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica |
title_fullStr |
Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica |
title_full_unstemmed |
Thermal structure of the open polynya formed off Riiser-Larsen Peninsula, Antarctica |
title_sort |
thermal structure of the open polynya formed off riiser-larsen peninsula, antarctica |
publisher |
National Institute of Polar Research |
publishDate |
2006 |
url |
https://doi.org/10.15094/00009363 https://doaj.org/article/8afcfccd8bda4c1bb2dbf3ac11f6b2c7 |
long_lat |
ENVELOPE(50.667,50.667,-66.783,-66.783) ENVELOPE(34.000,34.000,-68.917,-68.917) |
geographic |
Antarctic Dronning Maud Land Riiser-Larsen Riiser-Larsen Peninsula |
geographic_facet |
Antarctic Dronning Maud Land Riiser-Larsen Riiser-Larsen Peninsula |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land Sea ice |
op_source |
Antarctic Record, Vol 50, Iss 2, Pp 132-141 (2006) |
op_relation |
http://doi.org/10.15094/00009363 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00009363 0085-7289 2432-079X https://doaj.org/article/8afcfccd8bda4c1bb2dbf3ac11f6b2c7 |
op_doi |
https://doi.org/10.15094/00009363 |
_version_ |
1766101092594089984 |