Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet
Vertical profiles of oxygen isotopic contents in deposited snow were obtained in the region where katabatic winds prevail (Mizuho Station : 70.7°S, 44.3°E, 2230m), the inland dome-like plateau (Dome Camp : 77.0°S, 35.0°E, 3761m) and the transitional zone between them (Advance Camp : 74.2°S, 35.0°E,...
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National Institute of Polar Research
1991
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Online Access: | https://doi.org/10.15094/00008710 https://doaj.org/article/43c2d6d861474b309cc6b211d078ce1f |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:43c2d6d861474b309cc6b211d078ce1f 2023-05-15T14:02:44+02:00 Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet Yutaka Ageta Kokichi Kamiyama Hideki Narita Kazuhide Satow 1991-03-01 https://doi.org/10.15094/00008710 https://doaj.org/article/43c2d6d861474b309cc6b211d078ce1f en other eng National Institute of Polar Research doi:10.15094/00008710 0085-7289 2432-079X https://doaj.org/article/43c2d6d861474b309cc6b211d078ce1f undefined Antarctic Record, Vol 35, Iss 1, Pp 39-46 (1991) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1991 fttriple https://doi.org/10.15094/00008710 2023-01-22T17:42:48Z Vertical profiles of oxygen isotopic contents in deposited snow were obtained in the region where katabatic winds prevail (Mizuho Station : 70.7°S, 44.3°E, 2230m), the inland dome-like plateau (Dome Camp : 77.0°S, 35.0°E, 3761m) and the transitional zone between them (Advance Camp : 74.2°S, 35.0°E, 3198m). At Mizuho Station, the δ^O contents have high values around the hiatus layers. However, synchronous relations cannot be found between the neighboring profiles, since snow was exchanged due to deposition and erosion by strong winds. Inter-annual variations of oxygen isotopic contents in snow have been preserved better in the inner parts of the ice sheet between the three zones observed in this study. The profile at Dome Camp has good correlation with the inter-annual variation of summer temperature at 5000gpm above the South Pole. This result suggests that the temperature at this level above the South Pole is representable for air temperature condition over the inland ice sheet, and the meteorological conditions in summer have a strong effect on the transition of the oxygen isotopic content of snow after deposition due to evaporation-sublimation. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet South pole South pole Unknown Antarctic Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Station ENVELOPE(44.317,44.317,-70.683,-70.683) South Pole The Antarctic |
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Open Polar |
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fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir Yutaka Ageta Kokichi Kamiyama Hideki Narita Kazuhide Satow Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet |
topic_facet |
geo envir |
description |
Vertical profiles of oxygen isotopic contents in deposited snow were obtained in the region where katabatic winds prevail (Mizuho Station : 70.7°S, 44.3°E, 2230m), the inland dome-like plateau (Dome Camp : 77.0°S, 35.0°E, 3761m) and the transitional zone between them (Advance Camp : 74.2°S, 35.0°E, 3198m). At Mizuho Station, the δ^O contents have high values around the hiatus layers. However, synchronous relations cannot be found between the neighboring profiles, since snow was exchanged due to deposition and erosion by strong winds. Inter-annual variations of oxygen isotopic contents in snow have been preserved better in the inner parts of the ice sheet between the three zones observed in this study. The profile at Dome Camp has good correlation with the inter-annual variation of summer temperature at 5000gpm above the South Pole. This result suggests that the temperature at this level above the South Pole is representable for air temperature condition over the inland ice sheet, and the meteorological conditions in summer have a strong effect on the transition of the oxygen isotopic content of snow after deposition due to evaporation-sublimation. |
format |
Article in Journal/Newspaper |
author |
Yutaka Ageta Kokichi Kamiyama Hideki Narita Kazuhide Satow |
author_facet |
Yutaka Ageta Kokichi Kamiyama Hideki Narita Kazuhide Satow |
author_sort |
Yutaka Ageta |
title |
Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet |
title_short |
Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet |
title_full |
Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet |
title_fullStr |
Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet |
title_full_unstemmed |
Oxygen isotope profiles of deposited snow in different depositional environments of the Antarctic ice sheet |
title_sort |
oxygen isotope profiles of deposited snow in different depositional environments of the antarctic ice sheet |
publisher |
National Institute of Polar Research |
publishDate |
1991 |
url |
https://doi.org/10.15094/00008710 https://doaj.org/article/43c2d6d861474b309cc6b211d078ce1f |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(44.317,44.317,-70.683,-70.683) |
geographic |
Antarctic Mizuho Mizuho Station South Pole The Antarctic |
geographic_facet |
Antarctic Mizuho Mizuho Station South Pole The Antarctic |
genre |
Antarc* Antarctic Ice Sheet South pole South pole |
genre_facet |
Antarc* Antarctic Ice Sheet South pole South pole |
op_source |
Antarctic Record, Vol 35, Iss 1, Pp 39-46 (1991) |
op_relation |
doi:10.15094/00008710 0085-7289 2432-079X https://doaj.org/article/43c2d6d861474b309cc6b211d078ce1f |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00008710 |
_version_ |
1766273151527813120 |