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  1. F300 宇宙地球環境研究所
  2. F300b 紀要
  3. 名古屋大学加速器質量分析計業績報告書
  4. 20

モンゴル・フブスグル湖の湖底堆積物の化学組成データに認められる数千年スケールの周期的な環境変動

https://doi.org/10.18999/sumrua.20.93
https://doi.org/10.18999/sumrua.20.93
9041cc77-6129-4396-bd52-7e5610dd6380
名前 / ファイル ライセンス アクション
murakami2008.pdf murakami2008.pdf (19.0 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2011-04-28
タイトル
タイトル モンゴル・フブスグル湖の湖底堆積物の化学組成データに認められる数千年スケールの周期的な環境変動
言語 ja
その他のタイトル
その他のタイトル Periodic variation of paleoenvironments found by PCA of 27 kyr geochemical records of Lake Hovsgol sediment.
言語 en
著者 村上, 拓馬

× 村上, 拓馬

WEKO 82838

ja 村上, 拓馬

Search repository
勝田, 長貴

× 勝田, 長貴

WEKO 82839

ja 勝田, 長貴

Search repository
山本, 鋼志

× 山本, 鋼志

WEKO 82840

ja 山本, 鋼志

Search repository
高松, 信樹

× 高松, 信樹

WEKO 82841

ja 高松, 信樹

Search repository
高野, 雅夫

× 高野, 雅夫

WEKO 82842

ja 高野, 雅夫

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井上, 源喜

× 井上, 源喜

WEKO 82843

ja 井上, 源喜

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尾田, 武文

× 尾田, 武文

WEKO 82844

ja 尾田, 武文

Search repository
堀内, 一穂

× 堀内, 一穂

WEKO 82845

ja 堀内, 一穂

Search repository
河合, 崇欣

× 河合, 崇欣

WEKO 82846

ja 河合, 崇欣

Search repository
Murakami, Takuma

× Murakami, Takuma

WEKO 82847

en Murakami, Takuma

Search repository
Katsuta, Nagayoshi

× Katsuta, Nagayoshi

WEKO 82848

en Katsuta, Nagayoshi

Search repository
Yamamoto, Koshi

× Yamamoto, Koshi

WEKO 82849

en Yamamoto, Koshi

Search repository
Takamatsu, Nobuki

× Takamatsu, Nobuki

WEKO 82850

en Takamatsu, Nobuki

Search repository
Takano, Masao

× Takano, Masao

WEKO 82851

en Takano, Masao

Search repository
Matsumoto, Genki I

× Matsumoto, Genki I

WEKO 82852

en Matsumoto, Genki I

Search repository
Oda, Takefumi

× Oda, Takefumi

WEKO 82853

en Oda, Takefumi

Search repository
Horiuchi, Kazuho

× Horiuchi, Kazuho

WEKO 82854

en Horiuchi, Kazuho

Search repository
Kawai, Takayoshi

× Kawai, Takayoshi

WEKO 82855

en Kawai, Takayoshi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
抄録
内容記述 Geochemical proxy-records in a continuous 27 kyr (thousand years) core sediment from Lake Hovsgol in northwest Mongolia provides a detailed history of the response of the lake itself and the surrounding watershed to climate change during the last glacial to Holocene period. Principle component analysis (PCA) of 19 major and trace elements, total inorganic carbon (TIC), and total organic carbon (TOC) in the bulk-sediment samples revealed that the 21 chemical components are grouped by four assemblages: Group-1 components -Na, Mg, Ca, Sr, and TIC, hosted in carbonate minerals (calcite, dolomite, and magnecian calcite); Group-2 -Ni, Cu, and Zn, recognized as biophilic trace metals, and TOC; Group-3 -Al, K, Ti, V, Fe, Rb, Cs, Ba, and Pb, composed of rock-forming minerals; Group-4 -Cr, Mn, and As, sensitive to redox condition of sediment. The four element assemblages were originated from relevant 3 factors in subsidence. The group-1 and group-2 components of authigenic products in the lake are end member on the PC-1 score. The group-3 components of detrital materials from watershed contribute to the PC-2 score. The group-4 components of redox sensitive elements contribute to the PC-3 score, which are not the end member due to a small amount. The first two PC scores possibly suggest a sequential record of paleomoisture evolutions of central Asia. Especially, a variability of PC-2 score indicates erosion/weathering intensity of watershed which might be controlled by the ratio of vegetation cover associated with moisture change. A periodic variation on ~8. 7 kyr cycle was observed in the PC-2 score profile of detritus inputs of Lake Hovsgol over the last glacial and Holocene period. The decrease of detritus input of the lake coincided with the timing of dramatic supply of moisture from Asian monsoon regime and North At1antic region to Baikal watershed to which Lake Hovsgol belongs. Our geochemical records demonstrate that climate system of continental interior Asia was strongly influenced by climate change on a Milankovitch scale as well as a sub-Milankovitch one.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 第21回名古屋大学年代測定総合研究センターシンポジウム平成20(2008)年度報告
言語 ja
内容記述タイプ Other
出版者
言語 ja
出版者 名古屋大学年代測定資料研究センター
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/sumrua.20.93
ID登録タイプ JaLC
書誌情報 ja : 名古屋大学加速器質量分析計業績報告書

巻 20, p. 93-102, 発行日 2009-03
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