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Holocene moisture changes in western China, Central Asia, inferred from stalagmites
Cai, Yanjun1,2; Chiang, John C. H.; Breitenbach, Sebastian F. M.3,4,5; Tan, Liangcheng1,2; Cheng, Hai2,6; Edwards, R. Lawrence6; An, Zhisheng1,2
2017-02-15
Source PublicationQUATERNARY SCIENCE REVIEWS
Volume158Issue:2017Pages:15-28
SubtypeArticle
AbstractCentral Asia lies at the convergence between the Mediterranean and Asian monsoon climates, and there is a complex interaction between the westerlies with the monsoon to form the climate of that region and its variability. The region is highly vulnerable to changes in rainfall, highlighting the need to understand the underlying controls. We present a stalagmite-based delta O-18 record from Kesang Cave in western China, using MC-ICP-MS U-series dating and stable isotope analysis. Stalagmite calcite delta O-18 largely documents changes in the delta O-18 of precipitation. delta O-18 in stalagmites was low during the early and middle Holocene (10.0-3.0 ka BP), and shifted to higher values between 3.0 and 2.0 ka BP. After 2.01 ka BP, delta O-18 fluctuates with distinct centennial-scale variations. Drawing from results of state-of-the-art atmospheric general circulation model simulations for the preindustrial period and 9 ka BP, we propose that changes in moisture source regions and the wetter climate both contributed to the isotopic depletion of precipitation during the early and middle Holocene. Multiple records from surrounding regions indicate a generally wetter climate during the early and mid- Holocene, supporting our interpretation on the speleothem delta O-18. Changes in precipitation seasonality do not appear to be a viable explanation for the observed changes, nor increased penetration of monsoonal moisture to the study site. We speculate that the climatic regime shifted around 3.0-2.0 ka BP towards a drier climate, resulting in temperature having dominant control on precipitation delta O-18. The demise of three settlements around 500AD at the margin of Tarim Basin coincided with a period of decreased precipitation and increased temperature that likely affected local water resources, underscoring the potential impact of climate on human habitation in this region. (C) 2016 Elsevier Ltd. All rights reserved.
KeywordStalagmite Central Asia Oxygen Isotope Westerlies Asian Monsoon Moisture Source Precipitation Seasonality Temperature Holocene
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.quascirev.2016.12.014
WOS KeywordINTERTROPICAL CONVERGENCE ZONE ; EASTERN MEDITERRANEAN REGION ; ARID CENTRAL-ASIA ; ICE-CORE ; NORTHERN XINJIANG ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; BOSTEN LAKE ; TIEN-SHAN ; ATMOSPHERIC CIRCULATION
Indexed BySCI
Language英语
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000394485500002
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5516
Collection现代环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
3.Univ Calif Berkeley, Dept Geog, Berkeley, CA 94720 USA
4.Univ Calif Berkeley, Berkeley Atmospher Sci Ctr, Berkeley, CA 94720 USA
5.Ruhr Univ Bochum, Dept Sediment & Isotope Geol, Bochum, Germany
6.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA
Recommended Citation
GB/T 7714
Cai, Yanjun,Chiang, John C. H.,Breitenbach, Sebastian F. M.,et al. Holocene moisture changes in western China, Central Asia, inferred from stalagmites[J]. QUATERNARY SCIENCE REVIEWS,2017,158(2017):15-28.
APA Cai, Yanjun.,Chiang, John C. H..,Breitenbach, Sebastian F. M..,Tan, Liangcheng.,Cheng, Hai.,...&An, Zhisheng.(2017).Holocene moisture changes in western China, Central Asia, inferred from stalagmites.QUATERNARY SCIENCE REVIEWS,158(2017),15-28.
MLA Cai, Yanjun,et al."Holocene moisture changes in western China, Central Asia, inferred from stalagmites".QUATERNARY SCIENCE REVIEWS 158.2017(2017):15-28.
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