Holocene dust deposition in the Ili Basin and its implications for climate variations in Westerlies-dominated Central Asia

doi:10.1016/j.palaeo.2020.109731

IEECAS OpenIR > 古环境研究室

	Holocene dust deposition in the Ili Basin and its implications for climate variations in Westerlies-dominated Central Asia
	Sun, Huanyu 1,2,3; Song, Yougui1,2 ; Chen, Xiuling 4; Cheng, Liangqing 1; Liu, Huifang 1
通讯作者	Song, Yougui(ygsong@loess.llqg.ac.cn)
	2020-07-15
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	550 页码:13
摘要	Understanding Holocene paleoclimate in arid Central Asia (ACA) is helpful for predicting future climate. However, Holocene climate patterns and their forcing mechanisms across ACA are vigorously debated in the context of global climate change. Here, we present a Holocene loess profile (SGX) from the Ili Basin in the Westerlies-dominated Central Asia. Based on high-resolution, medium-grained (38-63 mu m) quartz optically stimulated luminescence (OSL) dating, and grain size and color measurements, we reconstruct the Holocene paleoclimate. OSL geochronology indicate that this SGX loess profile covers the last 11.5 ka, and grain size analyses reveal that the sediments are sandy loess, and the environmentally sensitive fractions are < 35.6 mu m and 35.6-252 mu m which represent suspensions after dust storms and proximal deposit components transported mainly during dust storms, respectively. And the redness and yellowness in the loess profile are closely related to the concentrations of hematite (Hm) and goethite (Gt); the ratio Hm/Gt also can be used to reflect the evolution of dry/humid conditions in Central Asian loess. The Holocene Westerlies-dominated climate in ACA is characterized by a dry early Holocene, persistently wet conditions in the middle and late Holocene, and a climatic optimum in the late Holocene. The winter solar insolation at 60 degrees N is considered the major forcing of Holocene climate evolution in ACA.
关键词	OSL ages Grain size Color index Loess Tianshan Mountains
DOI	10.1016/j.palaeo.2020.109731
关键词[WOS]	ARID CENTRAL-ASIA ; LOESS-PALEOSOL SEQUENCE ; GRAIN-SIZE DISTRIBUTION ; LAST GLACIAL PERIOD ; CHINESE LOESS ; MOISTURE EVOLUTION ; LATE QUATERNARY ; SUMMER MONSOON ; NORTH-ATLANTIC ; MAGNETIC-SUSCEPTIBILITY
收录类别	SCI ; SCI
语种	英语
资助项目	Natural Science Foundation of China[41977385] ; National Key Research and Development Program of China[2016YFA0601902] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40000000] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0101]
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000536187800005
出版者	ELSEVIER
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14813
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Song, Yougui
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China 4.Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China
推荐引用方式 GB/T 7714	Sun, Huanyu,Song, Yougui,Chen, Xiuling,et al. Holocene dust deposition in the Ili Basin and its implications for climate variations in Westerlies-dominated Central Asia[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,550:13.
APA	Sun, Huanyu,Song, Yougui,Chen, Xiuling,Cheng, Liangqing,&Liu, Huifang.(2020).Holocene dust deposition in the Ili Basin and its implications for climate variations in Westerlies-dominated Central Asia.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,550,13.
MLA	Sun, Huanyu,et al."Holocene dust deposition in the Ili Basin and its implications for climate variations in Westerlies-dominated Central Asia".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 550(2020):13.