气候变化领域集成服务门户(CCPortal): Indian summer monsoon variability during the last millennium as recorded in stalagmite from Baratang Mahadev cave; Andaman Islands

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DOI	10.1016/j.palaeo.2020.109908
	Indian summer monsoon variability during the last millennium as recorded in stalagmite from Baratang Mahadev cave; Andaman Islands
	Jaglan S.; Gupta A.K.; Cheng H.; Clemens S.C.; Dutt S.; Balaji S.
发表日期	2020
ISSN	0031-0182
卷号	557
英文摘要	This study presents a stable oxygen isotope record of Indian summer monsoon (ISM) variability using cave speleothem carbonate from Baratang Island (Andaman Islands) encompassing the last millennium (from 10th to 19th century CE). The studied interval encompasses two major climatic events; the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA) as well as the Current Warm Period (CWP). Our data suggest generally higher precipitation during the warm MCA when the ISM was relatively strong, and low precipitation during the cold LIA with a few exceptions when wet conditions prevailed. The Baratang cave record shows greater similarity with the records from the Sahiya and Klang caves, and opposite trends relative to those from the northeastern Himalaya owing to the dipolar nature of ISM precipitation. High-frequency sub-decadal to centennial scale pulses of weakened summer monsoons are observed during 16th to 19th century CE. These phases of weak ISM are correlated with severe droughts and famines in the Indian subcontinent owing to deficient monsoon rainfall, which had pronounced effect on South Asian societies. Spectral analysis suggests a strong periodicity of 190 yr (de Vries cycle) indicating strong influence of solar insolation. © 2020 Elsevier B.V.
英文关键词	Baratang cave; Current warm period; Indian monsoon dipole; Inter tropical convergence zone; Little Ice Age; Medieval climate anomaly
语种	英语
scopus关键词	carbonate; climate conditions; climate variation; insolation; Little Ice Age; Medieval Warm Period; monsoon; oxygen isotope; precipitation (climatology); spectral analysis; speleothem; stable isotope; stalagmite; summer; Andamans; Andamans and Nicobars; Baratang Island; Himalayas
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/150364
作者单位	Department of Geology, Govt. P. G. College Narnaul, Mahendragarh, 123001, India; Department of Geology and Geophysics, Indian Institute of technology Kharagpur, Kharagpur, 721302, India; Department of Earth Sciences, University of Minnesota, twin cities, Minneapolis, MN, United States; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China; Department of Earth, Environmental and Planetary Sciences, Brown University, 324 Brook Street, Providence, RI 02912-1846, United States; Wadia Institute of Himalayan Geology, 33- General Mahadeo Singh Road, 248001, Dehradun, India; Department of Coastal Disaster Management, School of Physical, Chemical & Applied Sciences, Pondicherry University, Port Blair, 744101, India
推荐引用方式 GB/T 7714	Jaglan S.,Gupta A.K.,Cheng H.,et al. Indian summer monsoon variability during the last millennium as recorded in stalagmite from Baratang Mahadev cave; Andaman Islands[J],2020,557.
APA	Jaglan S.,Gupta A.K.,Cheng H.,Clemens S.C.,Dutt S.,&Balaji S..(2020).Indian summer monsoon variability during the last millennium as recorded in stalagmite from Baratang Mahadev cave; Andaman Islands.Palaeogeography, Palaeoclimatology, Palaeoecology,557.
MLA	Jaglan S.,et al."Indian summer monsoon variability during the last millennium as recorded in stalagmite from Baratang Mahadev cave; Andaman Islands".Palaeogeography, Palaeoclimatology, Palaeoecology 557(2020).