Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica
P(論文) Oxygen isotopic composition (δ^<18>O) in the cores from the Antarctic and Greenland ice sheets provides important information about paleoclimatic records. However, the interpretation of the δ^<18>O values in the cores is not always easy. Mizuho Station is under the influence of a s...
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ftnipr:oai:nipr.repo.nii.ac.jp:00001186 2024-09-09T19:10:10+00:00 Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica Kato, Kikuo Watanabe, Okitsugu 1981-10 application/pdf https://nipr.repo.nii.ac.jp/record/1186/files/KJ00000011712.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 19 243 252 AA00733561 https://nipr.repo.nii.ac.jp/record/1186/files/KJ00000011712.pdf 1981 ftnipr 2024-06-17T04:00:26Z P(論文) Oxygen isotopic composition (δ^<18>O) in the cores from the Antarctic and Greenland ice sheets provides important information about paleoclimatic records. However, the interpretation of the δ^<18>O values in the cores is not always easy. Mizuho Station is under the influence of a stationary katabatic wind. Periods of erosion, deposition and neither occur on the snow surface around Mizuho Station. Therefore, the interpretation of δ^<18>O values in the cores from the station are more complicated. In the present study was discussed how to obtain information about paleoclimatic records from δ^<18>O in the cores. δ^<18>O values of thick and fine-grained layers with little-developed depth hoar were considered to provide the best information about paleo-temperature records, taking into consideration the following factors : 1) Snow does not always accumulate in every season. 2) A glazed surface is occasionally exposed over one year, resulting in an interruption in the annual layer (s). Subsequent movement of water vapor in firn occurs during depth hoar formation under a large temperature gradient. 3) The variation in annual air temperature is best shown by the air temperature in winter. The profile of δ^<18>O of such layers of one core agrees well with the profile of δ^<18>O of the long depth interval of another core, which is considered to provide information about the trend of variation of mean air temperature in the long term. departmental bulletin paper Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica Greenland Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Antarctic East Antarctica Greenland Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Station ENVELOPE(44.317,44.317,-70.683,-70.683) The Antarctic |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
P(論文) Oxygen isotopic composition (δ^<18>O) in the cores from the Antarctic and Greenland ice sheets provides important information about paleoclimatic records. However, the interpretation of the δ^<18>O values in the cores is not always easy. Mizuho Station is under the influence of a stationary katabatic wind. Periods of erosion, deposition and neither occur on the snow surface around Mizuho Station. Therefore, the interpretation of δ^<18>O values in the cores from the station are more complicated. In the present study was discussed how to obtain information about paleoclimatic records from δ^<18>O in the cores. δ^<18>O values of thick and fine-grained layers with little-developed depth hoar were considered to provide the best information about paleo-temperature records, taking into consideration the following factors : 1) Snow does not always accumulate in every season. 2) A glazed surface is occasionally exposed over one year, resulting in an interruption in the annual layer (s). Subsequent movement of water vapor in firn occurs during depth hoar formation under a large temperature gradient. 3) The variation in annual air temperature is best shown by the air temperature in winter. The profile of δ^<18>O of such layers of one core agrees well with the profile of δ^<18>O of the long depth interval of another core, which is considered to provide information about the trend of variation of mean air temperature in the long term. departmental bulletin paper |
author |
Kato, Kikuo Watanabe, Okitsugu |
spellingShingle |
Kato, Kikuo Watanabe, Okitsugu Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica |
author_facet |
Kato, Kikuo Watanabe, Okitsugu |
author_sort |
Kato, Kikuo |
title |
Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica |
title_short |
Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica |
title_full |
Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica |
title_fullStr |
Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica |
title_full_unstemmed |
Oxygen Isotope Profiles in Adjacent Cores from Mizuho Station, East Antarctica |
title_sort |
oxygen isotope profiles in adjacent cores from mizuho station, east antarctica |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/record/1186/files/KJ00000011712.pdf |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(44.317,44.317,-70.683,-70.683) |
geographic |
Antarctic East Antarctica Greenland Mizuho Mizuho Station The Antarctic |
geographic_facet |
Antarctic East Antarctica Greenland Mizuho Mizuho Station The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Greenland Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Greenland Memoirs of National Institute of Polar Research Polar Research |
op_relation |
Memoirs of National Institute of Polar Research. Special issue 19 243 252 AA00733561 https://nipr.repo.nii.ac.jp/record/1186/files/KJ00000011712.pdf |
_version_ |
1809824759690559488 |