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VARIATIONS OF OXYGEN ISOTOPIC COMPOSITION AND DISTRIBUTION OF CONTINENTAL ICE IN THE LAST ICE AGE (I)
https://doi.org/10.15094/00003618
https://doi.org/10.15094/00003618e2dcc10b-4701-437d-9d97-a87e9179bb4a
名前 / ファイル | ライセンス | アクション |
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KJ00000767824 (89.0 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1990-01-01 | |||||
タイトル | ||||||
タイトル | VARIATIONS OF OXYGEN ISOTOPIC COMPOSITION AND DISTRIBUTION OF CONTINENTAL ICE IN THE LAST ICE AGE (I) | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00003618 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
記事種別(英) | ||||||
en | ||||||
ABSTRACT | ||||||
論文名よみ | ||||||
その他のタイトル | VARIATIONS OF OXYGEN ISOTOPIC COMPOSITION AND DISTRIBUTION OF CONTINENTAL ICE IN THE LAST ICE AGE (I) | |||||
著者名よみ |
カトウ, キクオ
× カトウ, キクオ |
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著者名(英) |
KATO, Kikuo
× KATO, Kikuo |
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著者所属(英) | ||||||
en | ||||||
Water Research Institute, Nagoya University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Oxygen isotopic composition (δ^<18>O) of fossil foraminifera from deep-sea sediments has been used as indicators of past climate for more than thirty years since their first determinations. The foraminiferal δ^<18>O varies with the δ^<18>O of sea water as well as the temperature of ambient water. Therefore, for the past decade, the fossil foraminiferal δ^<18>O records have been derived from the benthic foraminifera living in the constant temperature abyssal ocean and have been considered to give the δ^<18>O record of sea water. However, there has been a discrepancy between the continental ice-volume records derived from sea level change and from the δ^<18>O change of sea water, which is based on the assumption that the δ^<18>O of the continental ice has been constant in the last ice age. Recent studies show that about one-third of the observed δ^<18>O variations can be due to the deep-sea water of about 1.5℃ cooler than the present temperature throughout the glacial period. I have studied the foraminiferal δ^<18>O and sea-level relation, assuming the followings : 1) The δ^<18>O of the continental ice should not have been constant throughout the last ice age and may have changed according to changed distributions of both the continental ice sheets and sea ice. 2) The δ^<18>O must have changed even in the continental ice of unchanged ice-volume. And I showed that the foraminiferal δ^<18>O record may not give the temperature record of the deep-sea but may give the records of δ^<18>O and distribution of the continental ice. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10756213 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 巻 3, p. 104, 発行日 1990-01 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |