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 |
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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