The climatic cyclicity in semiarid-arid central Asia over the past 500,000 years

doi:10.1029/2011GL050202

	The climatic cyclicity in semiarid-arid central Asia over the past 500,000 years
	Cheng, H.1,2; Zhang, P. Z.3; Spoetl, C.4; Edwards, R. L.2; Cai, Y. J.5; Zhang, D. Z.3; Sang, W. C.3; Tan, M.6; An, Z. S.5
刊名	GEOPHYSICAL RESEARCH LETTERS
	2012-01-13
卷号	39
ISSN号	0094-8276
DOI	10.1029/2011GL050202
文献子类	Article
英文摘要	Central Asia is currently a semiarid-arid region, dominated by the Westerlies. It is important to understand mechanisms of climate and precipitation changes here, as water availability in the region is crucial today and in the future. High-resolution, absolutely-dated oxygen isotope (delta O-18) records of stalagmites from Kesang Cave characterize a dynamic precipitation history over most of the past 500,000 years. This record demonstrates, for the first time, that climate change in the region exhibits a processional rhythm with abrupt inceptions of low delta O-18 speleothem growth at times of high Northern Hemisphere summer insolation followed by gradual delta O-18 increases that track decreases of insolation. These observations and interpretations contrast with the interpretation of nearby, but higher elevation ice core records. The absolutely-dated cave delta O-18 shifts can be used to correlate the regional climate variability by providing chronological marks. Combined with other paleoclimate records, the Kesang observations suggest that possible incursions of Asian summer monsoon rainfall or related moisture into the Kesang site and/or adjacent areas during the high insolation times may play an important role in changing orbital-scale hydrology of the region. Based on our record, arid climate will prevail in this region for the next several millennia, providing that anthropogenic effects do not supersede natural processes. Citation: Cheng, H., P. Z. Zhang, C. Spotl, R. L. Edwards, Y. J. Cai, D. Z. Zhang, W. C. Sang, M. Tan, and Z. S. An (2012), The climatic cyclicity in semi-arid-arid central Asia over the past 500,000 years, Geophys. Res. Lett., 39, L01705, doi: 10.1029/2011GL050202.
WOS关键词	ICE-CORE ; MILLENNIAL-SCALE ; MONSOON ; RECORDS ; SPELEOTHEMS ; ALTAI ; TIBET
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000299178800004
资助机构	Xi'an Jiaotong University(93K40208000004) ; Xi'an Jiaotong University(93K40208000004) ; U.S. NSF(0502535 ; U.S. NSF(0502535 ; NSFC(40631003 ; NSFC(40631003 ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; Gary Comer Science and Education Foundation(CC8 ; Gary Comer Science and Education Foundation(CC8 ; Austrian Science Fund ; Austrian Science Fund ; 0908792 ; 0908792 ; 40772110 ; 40772110 ; CP52) ; CP52) ; 1103403) ; 1103403) ; 40973007) ; 40973007) ; Xi'an Jiaotong University(93K40208000004) ; Xi'an Jiaotong University(93K40208000004) ; U.S. NSF(0502535 ; U.S. NSF(0502535 ; NSFC(40631003 ; NSFC(40631003 ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; Gary Comer Science and Education Foundation(CC8 ; Gary Comer Science and Education Foundation(CC8 ; Austrian Science Fund ; Austrian Science Fund ; 0908792 ; 0908792 ; 40772110 ; 40772110 ; CP52) ; CP52) ; 1103403) ; 1103403) ; 40973007) ; 40973007) ; Xi'an Jiaotong University(93K40208000004) ; Xi'an Jiaotong University(93K40208000004) ; U.S. NSF(0502535 ; U.S. NSF(0502535 ; NSFC(40631003 ; NSFC(40631003 ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; Gary Comer Science and Education Foundation(CC8 ; Gary Comer Science and Education Foundation(CC8 ; Austrian Science Fund ; Austrian Science Fund ; 0908792 ; 0908792 ; 40772110 ; 40772110 ; CP52) ; CP52) ; 1103403) ; 1103403) ; 40973007) ; 40973007) ; Xi'an Jiaotong University(93K40208000004) ; Xi'an Jiaotong University(93K40208000004) ; U.S. NSF(0502535 ; U.S. NSF(0502535 ; NSFC(40631003 ; NSFC(40631003 ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; State Key Laboratory of Loess and Quaternary Geology, CAS(SKLLQG1001) ; Gary Comer Science and Education Foundation(CC8 ; Gary Comer Science and Education Foundation(CC8 ; Austrian Science Fund ; Austrian Science Fund ; 0908792 ; 0908792 ; 40772110 ; 40772110 ; CP52) ; CP52) ; 1103403) ; 1103403) ; 40973007) ; 40973007)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84748]
专题	中国科学院地质与地球物理研究所
通讯作者	Cheng, H.
作者单位	1.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 2.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA 3.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China 4.Leopold Franzens Univ, Inst Geol & Palaontol, A-6020 Innsbruck, Austria 5.Chinese Acad Sci, Inst Earth Environm, Xian 710054, Shanxi, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Cheng, H.,Zhang, P. Z.,Spoetl, C.,et al. The climatic cyclicity in semiarid-arid central Asia over the past 500,000 years[J]. GEOPHYSICAL RESEARCH LETTERS,2012,39.
APA	Cheng, H..,Zhang, P. Z..,Spoetl, C..,Edwards, R. L..,Cai, Y. J..,...&An, Z. S..(2012).The climatic cyclicity in semiarid-arid central Asia over the past 500,000 years.GEOPHYSICAL RESEARCH LETTERS,39.
MLA	Cheng, H.,et al."The climatic cyclicity in semiarid-arid central Asia over the past 500,000 years".GEOPHYSICAL RESEARCH LETTERS 39(2012).