气候变化领域集成服务门户(CCPortal): Paleogeography control of Indian monsoon intensification and expansion at 41 Ma

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DOI	10.1016/j.scib.2021.07.023
	Paleogeography control of Indian monsoon intensification and expansion at 41 Ma
	Fang, Xiaomin; Yan, Maodu; Zhang, Weilin; Nie, Junsheng; Han, Wenxia; Wu, Fuli; Song, Chunhui; Zhang, Tao; Zan, Jinbo; Yang, Yongpeng
通讯作者	Fang, XM (通讯作者)
发表日期	2021
ISSN	2095-9273
EISSN	2095-9281
起始页码	2320
结束页码	2328
卷号	66 期号:22
英文摘要	As a crucial part of the Asian monsoon stretching from tropical India to temperate East Asia, the Indian monsoon (IM) contributes predominant precipitation over Asian continent. However, our understanding of IM's onset, development and the underlying driving mechanisms is limited. Increasing evidence indicates that the IM began in the Eocene or even the Paleocene and was unexceptionally linked to the early rise of the Tibetan Plateau (TP). These were challenged by the heterogeneous and diachronous uplift of the TP and all the reported records were confined to tropical zone under tropical monsoon driven by the Intertropical Convergence Zone (ITCZ) that is irrelevant to the TP. Therefore, reliable paleoclimatic records from the extra-tropical IM region is crucial to reveal how the tropical IM expanded to subtropical and temperate zones and what driving factors might be related to it. Here we present robust Eocene paleoenvironmental records from central Yunnan (-26 degrees N) in subtropical East Asia. The multiproxy results of two sites demonstrate a consistent sudden switch from a dry environment in the early Eocene to a seasonally wet one at 41 Ma, suggesting a jump of the tropical IM to the southern subtropical zone at 41 Ma. The full collision of India with Asia, and the resulting changes in paleogeography at 41 Ma (closure of the Neotethys sea, retreat of the Paratethys seas, fast northward movement of the southern margin of the TP and rise of the central TP), aided by synchronous Antarctic cooling, might have worked together to drive the IM enhancement and northward expansion. (c) 2021 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
关键词	SOUTH ASIAN MONSOON TIBETAN PLATEAU CONTINENTAL COLLISION TECTONIC EVOLUTION EURASIAN CLIMATE EOCENE BASIN PALEOGENE UPLIFT CONSTRAINTS
英文关键词	Asia paleogeography; Indian tropical monsoon; Eocene paleoenvironment; Subtropical monsoon onset; Driven factors and forcings
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000702915700012
来源期刊	SCIENCE BULLETIN
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260213
推荐引用方式 GB/T 7714	Fang, Xiaomin,Yan, Maodu,Zhang, Weilin,et al. Paleogeography control of Indian monsoon intensification and expansion at 41 Ma[J]. 中国科学院青藏高原研究所,2021,66(22).
APA	Fang, Xiaomin.,Yan, Maodu.,Zhang, Weilin.,Nie, Junsheng.,Han, Wenxia.,...&Yang, Yongpeng.(2021).Paleogeography control of Indian monsoon intensification and expansion at 41 Ma.SCIENCE BULLETIN,66(22).
MLA	Fang, Xiaomin,et al."Paleogeography control of Indian monsoon intensification and expansion at 41 Ma".SCIENCE BULLETIN 66.22(2021).