气候变化领域集成服务门户(CCPortal): High-resolution reconstruction of Indian summer monsoon during the Bølling-Allerød from a central Indian stalagmite

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DOI	10.1016/j.palaeo.2018.11.006
	High-resolution reconstruction of Indian summer monsoon during the Bølling-Allerød from a central Indian stalagmite
	Gautam P.K.; Narayana A.C.; Band S.T.; Yadava M.G.; Ramesh R.; Wu C.-C.; Shen C.-C.
发表日期	2019
ISSN	0031-0182
起始页码	567
结束页码	576
卷号	514
英文摘要	Although the Indian monsoon during the last deglaciation has been reconstructed from marine sediments from the Indian Ocean, a detailed high resolution (decadal or less) reconstruction from terrestrial records such as speleothems has been lacking from the core monsoon zone of India. Such reconstructions can help determine whether the monsoon is controlled by insolation alone or also other feedbacks within the Earth system. We present here a new data set of high resolution record based on 1186 measurements of δ18O from a 43-cm long speleothem from the Kailash Cave, Central India that record Indian Summer Monsoon (ISM) rainfall changes encompassing the Bølling-Allerød interstadial (14.8 to 12.6 ka). The growth rates varied from 0.6 to 37.1 mm/year, with the monsoon strength. This is also confirmed by the δ18O record, with a rapid increase in the rainfall during 14.8 to 14.5 ka, stabilizing subsequently, and exhibiting centennial and multi-decadal oscillations. Our results corroborate an earlier observation that although the boundary conditions during the last several millennia and the Bølling-Allerød were very different, multi-decadal and centennial climate dynamics may have been similar. In addition to solar insolation, our results show a relation of ISM shifts to coupled ocean-atmospheric processes. Strong link of Indian Summer Monsoon (ISM) variability to proxy records from the southern hemisphere is also noted in this work. © 2018 Elsevier B.V.
英文关键词	Coupled ocean-atmosphere; Inter-hemispheric links; Kailash cave of India; Paleoclimate; U-Th dates; Wavelet analysis
语种	英语
scopus关键词	Allerod; atmosphere-ocean coupling; Bolling; boundary condition; cavern; climate feedback; historical record; insolation; interstadial; last deglaciation; marine sediment; monsoon; paleoclimate; reconstruction; Southern Hemisphere; speleothem; stalagmite; summer; thorium; uranium series dating; India; Indian Ocean
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151135
作者单位	Centre for Earth, Ocean, and Atmospheric Sciences, University of Hyderabad, Gachibowli, Hyderabad, 500 046, India; Physical Research Laboratory, Navrangpura, Ahemadabad, 380 009, India; High-Precision Mass Spectrometry and Environmental Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei, 10617, Taiwan
推荐引用方式 GB/T 7714	Gautam P.K.,Narayana A.C.,Band S.T.,et al. High-resolution reconstruction of Indian summer monsoon during the Bølling-Allerød from a central Indian stalagmite[J],2019,514.
APA	Gautam P.K..,Narayana A.C..,Band S.T..,Yadava M.G..,Ramesh R..,...&Shen C.-C..(2019).High-resolution reconstruction of Indian summer monsoon during the Bølling-Allerød from a central Indian stalagmite.Palaeogeography, Palaeoclimatology, Palaeoecology,514.
MLA	Gautam P.K.,et al."High-resolution reconstruction of Indian summer monsoon during the Bølling-Allerød from a central Indian stalagmite".Palaeogeography, Palaeoclimatology, Palaeoecology 514(2019).