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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ftnipr:oai:nipr.repo.nii.ac.jp:00003719 2023-05-15T13:49:01+02:00 OXYGEN ISOTOPE PROFILES OF DEPOSITED SNOW IN DIFFERENT DEPOSITIONAL ENVIRONMENTS OF THE ANTARCTIC ICE SHEET アゲタ ユタカ カミヤマ コキチ ナリタ ヒデキ サトウ カズヒデ Yutaka AGETA Kokichi KAMIYAMA Hideki NARITA Kazuhide SATOW 1992-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3719 http://id.nii.ac.jp/1291/00003719/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3719&item_no=1&attribute_id=18&file_no=1 en eng ABSTRACT Water Research Institute, Nagoya University Geophysical Research Station, Faculty of Science, Kyoto University Institute of Low Temperature Science, Hokkaido University Nagaoka College of Technology National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3719 http://id.nii.ac.jp/1291/00003719/ AA10756213 Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 5, 181(1992-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3719&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1992 ftnipr 2022-12-10T19:45:46Z 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). Ten profiles from a snow trench 10m wide and 1m deep, a profile from a snow pit 3m deep and that from a snow pit 5m deep were obtained at Mizuho Station, Advance Camp and Dome Camp, respectively. Snow layers were dated on the basis of stake measurements at Mizuho Station, a peak of tritium content (in 1966) at Advance Camp and peaks of tritium and gross β activities (in 1965,1955) at Dome Camp. At Mizuho Station, δ^<18>O contents have high values around the hiatus layers. However, synchronous relations cannot be found between 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 representative 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. Report Antarc* Antarctic Ice Sheet Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology South pole South pole National Institute of Polar Research Repository, Japan Antarctic The Antarctic South Pole Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Station ENVELOPE(44.317,44.317,-70.683,-70.683) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
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). Ten profiles from a snow trench 10m wide and 1m deep, a profile from a snow pit 3m deep and that from a snow pit 5m deep were obtained at Mizuho Station, Advance Camp and Dome Camp, respectively. Snow layers were dated on the basis of stake measurements at Mizuho Station, a peak of tritium content (in 1966) at Advance Camp and peaks of tritium and gross β activities (in 1965,1955) at Dome Camp. At Mizuho Station, δ^<18>O contents have high values around the hiatus layers. However, synchronous relations cannot be found between 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 representative 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 |
Report |
author |
アゲタ ユタカ カミヤマ コキチ ナリタ ヒデキ サトウ カズヒデ Yutaka AGETA Kokichi KAMIYAMA Hideki NARITA Kazuhide SATOW |
spellingShingle |
アゲタ ユタカ カミヤマ コキチ ナリタ ヒデキ サトウ カズヒデ Yutaka AGETA Kokichi KAMIYAMA Hideki NARITA Kazuhide SATOW OXYGEN ISOTOPE PROFILES OF DEPOSITED SNOW IN DIFFERENT DEPOSITIONAL ENVIRONMENTS OF THE ANTARCTIC ICE SHEET |
author_facet |
アゲタ ユタカ カミヤマ コキチ ナリタ ヒデキ サトウ カズヒデ Yutaka AGETA Kokichi KAMIYAMA Hideki NARITA Kazuhide SATOW |
author_sort |
アゲタ ユタカ |
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 |
ABSTRACT |
publishDate |
1992 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3719 http://id.nii.ac.jp/1291/00003719/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3719&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(44.317,44.317,-70.683,-70.683) |
geographic |
Antarctic The Antarctic South Pole Mizuho Mizuho Station |
geographic_facet |
Antarctic The Antarctic South Pole Mizuho Mizuho Station |
genre |
Antarc* Antarctic Ice Sheet Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology South pole South pole |
genre_facet |
Antarc* Antarctic Ice Sheet Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology South pole South pole |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3719 http://id.nii.ac.jp/1291/00003719/ AA10756213 Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 5, 181(1992-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3719&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250426365116416 |