Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess-Paleosol Sequence

doi:10.1029/2019JD030470

IEECAS OpenIR > 古环境研究室

	Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess-Paleosol Sequence
	Li, Yue 1,2,3; Song, Yougui1,2 ; Qiang, Mingrui 4; Miao, Yunfa 5; Zeng, Mengxiu 6
通讯作者	Song, Yougui(syg@ieecas.cn)
	2019-08-16
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
卷号	124 期号:15 页码:8449-8466
摘要	Atmospheric dust emission is closely related to conditions in the source area. Typically, loess deposits represent the accumulation of locally derived dust, providing the opportunity to reconstruct past variations in dust emission and hence insights into dust-climate linkages and the underlying mechanisms of dust mobilization, transport, and deposition. As yet, however, information on patterns of dust emission in Central Asia is sparse. Here we present the last glacial sedimentological data of a loess section from the Ili Basin, northwest China. Our results show that the variations in sand-sized fraction can indicate frequencies of occurring strong winds, which was likely driven by the Eurasian ice sheets during Marine Isotope Stage Stage 2 (MIS2) and MIS4 and by the boreal summer insolation during MIS3. The mass accumulation rate (MAR) reflects an integration of sediment availability in the provenance, vegetation cover in the deposition area, and wind regime. The differences of driving factors potentially explain the observed mismatches between variations in grain size and MAR. Comparison of dust fluxes observed in Greenland ice core and the North Pacific deep-sea sediment with the Central/East Asian MAR records supports the idea that the high flux of long-distance export of Asian dust is closely associated with the Siberian High and also influenced by changes in the atmospheric transport efficiency and likely by the source strength.
关键词	Central Asia loess last glacial dust-climate linkage dynamic mechanism
DOI	10.1029/2019JD030470
关键词[WOS]	ARID CENTRAL-ASIA ; CHRONOLOGICALLY ORDERED SAMPLES ; HOLOCENE MOISTURE EVOLUTION ; QINGHAI-TIBETAN PLATEAU ; ABRUPT CLIMATIC EVENTS ; MASS ACCUMULATION RATE ; LATE QUATERNARY LOESS ; GREENLAND ICE-CORE ; GRAIN-SIZE ; NORTHERN CHINA
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Key Research and Development Program of China[2016YFA0601902] ; Natural Science Foundation of China[41572162]
WOS研究方向	Meteorology & Atmospheric Sciences
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; Natural Science Foundation of China
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000482475000005
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：39[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/361006/13522
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, Shaanxi, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.South China Normal Univ, Sch Geog, Guangzhou, Guangdong, Peoples R China 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Gansu, Peoples R China 6.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Li, Yue,Song, Yougui,Qiang, Mingrui,et al. Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess-Paleosol Sequence[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(15):8449-8466.
APA	Li, Yue,Song, Yougui,Qiang, Mingrui,Miao, Yunfa,&Zeng, Mengxiu.(2019).Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess-Paleosol Sequence.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(15),8449-8466.
MLA	Li, Yue,et al."Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess-Paleosol Sequence".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.15(2019):8449-8466.