Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2022-05-20 |
タイトル |
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タイトル |
A 145 kyr record of upstream changes in Indian monsoon circulation and its link to southern high-latitude climate |
タイトル |
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言語 |
en |
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タイトル |
A 145 kyr record of upstream changes in Indian monsoon circulation and its link to southern high-latitude climate |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Teleconnection |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Monsoon |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Antarctica |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Southern Indian Ocean |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Stable isotopes |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Foraminifera |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
Tiwari, Manish
Kumar, Vikash
Nagoji, Sidhesh
Mohan, Rahul
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The influence of northern high latitude climate variability on the South Asian Summer Monsoon has been extensively studied using both instrumental and proxy based climate data. In comparison, only a few studies have attempted to explore the southern high latitude association of the South Asian Summer Monsoon. Here we present a 145 kyr long new data (oxygen and carbon isotopic abundance of two depth-stratified species of foraminifera viz. Globigerinoides ruber and Globorotalia menardii) from a sediment core on sub-millennial to millennial scale resolution from the southwestern tropical Indian Ocean - a region swept by the southeasterly wind during boreal summer (referred to as ‘summer’ hereafter), which transforms to the southwest monsoon wind after crossing the equator. The available records of past summer monsoon variability are predominantly based on reconstruction of downstream hydrology, which is identifiable with the thermodynamics of the system. The present study is a reconstruction of the dynamics of the summer monsoon circulation from an upstream region which is ideally suited for exploring its link with the southern high-latitude climate. We identified several occurrences of interchanging intense and weak monsoon circulation events during the 145 kyr period. We further find that warm (cold) conditions in Antarctica show a near one-to-one coupling with weak (strong) monsoon phases, suggesting a strong mechanistic link between them during the period. |
書誌情報 |
en : Polar Science
巻 30,
p. 100739,
発行日 2021-12
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ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
18739652 |
DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.polar.2021.100739 |
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関連名称 |
10.1016/j.polar.2021.100739 |