Indian Monsoonal Variations During the Past 80 Kyr Recorded in NGHP-02 Hole 19B, Western Bay of Bengal: Implications From Chemical and Mineral Properties

臼井, 洋一; Ota, Yuki; Kawahata, Hodaka; Kuroda, Junichiro; Yamaguchi, Asuka; Suzuki, Atsushi; Araoka, Daisuke; Abe-Ouchi, Ayako; Yamada, Yasuhiro; Ijiri, Akira; Kanamatsu, Toshiya; Kinoshita, Masataka; Moe, Kyaw Thu; Lin, Weiren; Saito, Saneatsu; Sanada, Yoshinori; Hamada, Yohei; Nakamura, Yasuyuki; Shinmoto, Yuichi; Wu, Hung Yu; Ahagon, Naokazu; Aoike, Kan; Iijima, Koichi; Machiyama, Hideaki; Tejada, Maria Luisa; Umetsu, Keita; Usui, Yoichi; Yamamoto, Yuzuru; Yoshikawa, Shuro; Jimenez-Espejo, Francisco; Haraguchi, Satoru; Komai, Nobuharu; Suga, Hisami; Abe, Natsue; Gupta, Lallan; Hirose, Takehiro; Masaki, Yuka; Nomura, Shun; Sugihara, Takamitsu; Tanikawa, Wataru; Kubo, Yusuke; Maeda, Lena; Toczko, Sean

doi:10.1029/2018GC007772

Item type

学術雑誌論文 / Journal Article(1)

公開日

2022-09-02

タイトル

Indian Monsoonal Variations During the Past 80 Kyr Recorded in NGHP-02 Hole 19B, Western Bay of Bengal: Implications From Chemical and Mineral Properties

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

journal article

ID登録

10.24517/00067021

ID登録タイプ

JaLC

著者

Ota, Yuki
Kawahata, Hodaka

Ijiri, Akira
Kanamatsu, Toshiya

Kinoshita, Masataka

Moe, Kyaw Thu
Lin, Weiren
Saito, Saneatsu

Sanada, Yoshinori

Hamada, Yohei
Nakamura, Yasuyuki

Shinmoto, Yuichi

Wu, Hung Yu
Ahagon, Naokazu

Aoike, Kan
Iijima, Koichi

Machiyama, Hideaki

Tejada, Maria Luisa

Umetsu, Keita
Usui, Yoichi

WEKO 106521
e-Rad 20609862

	Usui, Yoichi

Search repository

Yamamoto, Yuzuru

WEKO 27117
e-Rad 80019645

	Yamamoto, Yuzuru

Search repository

Yoshikawa, Shuro

Jimenez-Espejo, Francisco

Haraguchi, Satoru

Komai, Nobuharu

Suga, Hisami
Abe, Natsue

WEKO 17266
e-Rad 80302933

	Abe, Natsue

Search repository

Gupta, Lallan
Hirose, Takehiro

Masaki, Yuka
Nomura, Shun
Sugihara, Takamitsu

Tanikawa, Wataru

Kubo, Yusuke
Maeda, Lena
Toczko, Sean

著者別表示

臼井, 洋一

提供者所属

内容記述タイプ

Other

内容記述

金沢大学理工研究域地球社会基盤学系

書誌情報

Geochemistry, Geophysics, Geosystems

巻 20, 号 1, p. 148-165, 発行日 2019-01-06

ISSN

収録物識別子タイプ

ISSN

収録物識別子

1525-2027

DOI

関連識別子

10.1029/2018GC007772

出版者

American Geophysical Union, Geochemical Society / Wiley Open Access

抄録

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Abstract

内容記述

Detailed reconstruction of Indian summer monsoons is necessary to better understand the late Quaternary climate history of the Bay of Bengal and Indian peninsula. We established a chronostratigraphy for a sediment core from Hole 19B in the western Bay of Bengal, extending to approximately 80 kyr BP and examined major and trace element compositions and clay mineral components of the sediments. Higher δ 18 O values, lower TiO 2 contents, and weaker weathering in the sediment source area during marine isotope stages (MIS) 2 and 4 compared to MIS 1, 3, and 5 are explained by increased Indian summer monsoonal precipitation and river discharge around the western Bay of Bengal. Clay mineral and chemical components indicate a felsic sediment source, suggesting the Precambrian gneissic complex of the eastern Indian peninsula as the dominant sediment source at this site since 80 kyr. Trace element ratios (Cr/Th, Th/Sc, Th/Co, La/Cr, and Eu/Eu*) indicate increased sediment contributions from mafic rocks during MIS 2 and 4. We interpret these results as reflecting the changing influences of the eastern and western branches of the Indian summer monsoon and a greater decrease in rainfall in the eastern and northeastern parts of the Indian peninsula than in the western part during MIS 2 and 4. © 2018. American Geophysical Union. All Rights Reserved.

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出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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関連識別子

http://sites.agu.org/

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http://sites.agu.org/

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Indian Monsoonal Variations During the Past 80 Kyr Recorded in NGHP-02 Hole 19B, Western Bay of Bengal: Implications From Chemical and Mineral Properties

× Ota, Yuki

× Kawahata, Hodaka

× Kuroda, Junichiro

× Yamaguchi, Asuka

× Suzuki, Atsushi

× Araoka, Daisuke

× Abe-Ouchi, Ayako

× Yamada, Yasuhiro

× Ijiri, Akira

× Kanamatsu, Toshiya

× Kinoshita, Masataka

× Moe, Kyaw Thu

× Lin, Weiren

× Saito, Saneatsu

× Sanada, Yoshinori

× Hamada, Yohei

× Nakamura, Yasuyuki

× Shinmoto, Yuichi

× Wu, Hung Yu

× Ahagon, Naokazu

× Aoike, Kan

× Iijima, Koichi

× Machiyama, Hideaki

× Tejada, Maria Luisa

× Umetsu, Keita

× Usui, Yoichi

× Yamamoto, Yuzuru

× Yoshikawa, Shuro

× Jimenez-Espejo, Francisco

× Haraguchi, Satoru

× Komai, Nobuharu

× Suga, Hisami

× Abe, Natsue

× Gupta, Lallan

× Hirose, Takehiro

× Masaki, Yuka

× Nomura, Shun

× Sugihara, Takamitsu

× Tanikawa, Wataru

× Kubo, Yusuke

× Maeda, Lena

× Toczko, Sean

× 臼井, 洋一

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