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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. 18

チベット・プマユムツォ湖の柱状堆積物に見られる年代逆転に関する一考察(第19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18(2006)年度報告,第2部)

https://doi.org/10.18999/sumrua.18.162
https://doi.org/10.18999/sumrua.18.162
5dc58a3e-8ba3-4615-bbb3-50ddf8bfd782
名前 / ファイル ライセンス アクション
KJ00005461892.pdf KJ00005461892.pdf (868.5 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2010-06-10
タイトル
タイトル チベット・プマユムツォ湖の柱状堆積物に見られる年代逆転に関する一考察(第19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18(2006)年度報告,第2部)
言語 ja
その他のタイトル
その他のタイトル Investigation on the age reversal found in a sediment core from Lake Pumayum Co in the southeastern part of the Tibetan Plateau(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part 2)
言語 en
著者 松中, 哲也

× 松中, 哲也

WEKO 82421

ja 松中, 哲也

Search repository
Matsunaka, Tetsuya

× Matsunaka, Tetsuya

WEKO 82422

en Matsunaka, Tetsuya

Search repository
西村, 弥亜

× 西村, 弥亜

WEKO 82423

ja 西村, 弥亜

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Nishimura, Mitsugu

× Nishimura, Mitsugu

WEKO 82424

en Nishimura, Mitsugu

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中村, 俊夫

× 中村, 俊夫

WEKO 82425

ja 中村, 俊夫

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Nakamura, Toshio

× Nakamura, Toshio

WEKO 82426

en Nakamura, Toshio

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渡邊, 隆広

× 渡邊, 隆広

WEKO 82427

ja 渡邊, 隆広

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Watanabe, Takahiro

× Watanabe, Takahiro

WEKO 82428

en Watanabe, Takahiro

Search repository
寺井, 久慈

× 寺井, 久慈

WEKO 82429

ja 寺井, 久慈

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Terai, Hisayoshi

× Terai, Hisayoshi

WEKO 82430

en Terai, Hisayoshi

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中野, 志穂

× 中野, 志穂

WEKO 82431

ja 中野, 志穂

Search repository
Nakano, Shiho

× Nakano, Shiho

WEKO 82432

en Nakano, Shiho

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Zhu, Liping

× Zhu, Liping

WEKO 82433

en Zhu, Liping

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
権利
言語 ja
権利情報 名古屋大学年代測定資料研究センター
権利
言語 ja
権利情報 本文データは学協会の許諾に基づきCiNiiから複製したものである
抄録
内容記述 Little has been known in details as to how the Tibetan Plateau had responded to global climatic oscillations in the paleoenvironmental history. In order to elucidate when and how the deglaciation and the subsequent warm and wet climate after the last glacial maximum (LGM) started on the plateau, and then were linked to the restoration of the southwest monsoon, we have been trying to organic-geochemically analyze the paleoenvironments recorded in a 4m-long sediment core (PY409PC) collected from Lake Pumayum Co in a southeast part of the plateau. However, it was found that the sediment ages strikingly reversed from 14,220yrB.P to 19,507yrB.P between the bottom and 40cm in depth toward the top, and the age reversal is hindering us from going on the paleoenvironmental analysis. It appeared that the reversal was caused by the contribution of "old carbon" from certain natural source to the lake, rather than a contamination during sampling and analyzing. We attempted to make clear the old carbon source and the factors controlling the contribution, and obtained the following results: 1) As the supply of organic matter to the lake decreased since ca.14,200yrB.P, the type of organic matter deposited probably changed from soil organic matter originated mainly from a kind of grasses grown on relatively wet lands to those from recent terrestrial plants on ordinary lands with age. This is seemed to have been caused by the environmental change that the wet lands surrounding the lake at that time were lost by a rapid expansion of the water basin, due to the activation of water circulation. 2) It is likely that organic matter with "old carbon" has continuously contributed to the lake sediments as a background at least since ca.14,200yrB.P. The results suggested that the age reversal found in our core sample was resulted from the increasing relative contribution of soil organic matter with "old carbon" to the sedimentary organic matter, coupled with the decrease in a supply of new organic matter from land with age.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 第19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18(2006)年度報告<第2部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall
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.18.162
ID登録タイプ JaLC
関連情報
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/110007150984/
書誌情報 ja : 名古屋大学加速器質量分析計業績報告書

巻 18, p. 162-171, 発行日 2007-03
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