Orbital-Scale Paleoceanographic Response to the Indian Monsoon in the Laxmi Basin of the Eastern Arabian Sea

Boo Keun Khim*, Ji Eun Kim, Keiji Horikawa, Minoru Ikehara, Yoshihiro Asahara, Jongmin Lee

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

抄録

International Ocean Discovery Program Expedition 355 performed a 1109.4 m penetration drill at Site U1456 in the Laxmi Basin of the Eastern Arabian Sea. The uppermost section (*121 m thick) was analyzed for the paleoceanographic change in response to the orbital-scale Indian monsoon. Correlation of d18 O values of planktonic foraminifera (Globigerinoides ruber) to the LR04 stacks determined the age model (*1.2 Ma). The geochemical contents correspond to the sediment facies such that high TC contents correspond to the pelagic carbonates. High d15 N values of bulk sediments coincide with the interglacial periods when denitrification was intensified.87 Sr/86 Sr ratios and eNd values of detrital particles are controlled by the sediment sources (i.e., river sediments) as well as depositional processes. Mixed layer depth traced by d18 O and d13 C values between G. ruber and G. sacculifer varied in response to the monsoon activity. The sediments in the Laxmi Basin of the Eastern Arabian Sea record the orbital-scale variation of the Indian monsoon during the Pleistocene.

本文言語英語
ページ(範囲)9-11
ページ数3
ジャーナルAdvances in Science, Technology and Innovation
DOI
出版ステータス出版済み - 2019

ASJC Scopus 主題領域

  • 建築
  • 環境化学
  • 再生可能エネルギー、持続可能性、環境

フィンガープリント

「Orbital-Scale Paleoceanographic Response to the Indian Monsoon in the Laxmi Basin of the Eastern Arabian Sea」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル