Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
2006-01-01 |
タイトル |
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タイトル |
Environmental changes in Syowa Station area of Antarctica during the last 2300 years inferred from organic components in lake sediment cores |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Antarctic lake |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
environmental change |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
sediment core |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
aquatic moss |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
organic components |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
carbon-14 AMS dating |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00006239 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
論文名よみ |
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その他のタイトル |
Environmental changes in Syowa Station area of Antarctica during the last 2300 years inferred from organic components in lake sediment cores |
著者名(英) |
Matsumoto, Genki I.
Komori, Kazushi
Enomoto, Ayaka
Imura, Satoshi
Takemura, Tetsuo
Ohyama, Yoshikuni
Kanda, Hiroshi
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著者所属(英) |
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en |
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Department of Environmental Information Science, School of Social Information Studies, Otsuma Women's University/Department of Chemistry, Faculty of Science, Tokyo University of Science/Department of Environmental Information Science, School of Social Information Studies, Otsuma Women's University/National Institute of Polar Research/Department of Chemistry, Faculty of Science, Tokyo University of Science/National Institute of Polar Research/National Institute of Polar Research |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
rganic components in sediment cores from Namazu Ike(lake)(length 40cm) and O-ike(lake)(length 32cm) from Syowa Station area, Antarctica were studied to clarify their features in relation to paleoenvironmental changes, together with carbon-14 dating by Tandetron accelerator mass spectrometry. Namazu Ike sediment core was mainly composed of algal(mainly cyanobacteria) and aquatic moss debris, whereas O-ike sediment core was comprised of coarse and fine sands with the influence of algal(mainly cyanobacteria) debris. The ages of core bottoms of Namazu Ike and O-ike were estimated to be 1550 and 2330 years before present(yBP), respectively. The sedimentation rates of Namazu Ike and O-ike were calculated to be 30 and 59 years/cm, respectively. Very high total organic carbon(TOC) contents(average 24.5%) of Namazu Ike revealed that the sediment core was mainly composed of organic matter. Dramatic increase of TOC/total nitrogen ratios at a depth of 25cm in Namazu Ike strongly suggests that aquatic moss increased from 1100yBP to the core top. Changes in n-alkanes, n-alkanoic and n-alkenoic acids, and sterol compositions in the O-ike sediment core, suggest that microbial composition changed considerably, but their source organisms are not clear and further studies are required. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11327019 |
書誌情報 |
Polar bioscience
巻 19,
p. 51-62,
発行日 2006-01
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出版者 |
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出版者 |
National Institute of Polar Research |