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

文献类型：期刊论文

作者Li, Yue4,5,6; Song, Yougui4,5; Qiang, Mingrui1; Miao, Yunfa2; Zeng, Mengxiu3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2019-08-16
卷号124期号:15页码:8449-8466
关键词Central Asia loess last glacial dust-climate linkage dynamic mechanism
DOI10.1029/2019JD030470
通讯作者Song, Yougui(syg@ieecas.cn)
英文摘要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.
WOS关键词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
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
语种英语
WOS记录号WOS:000482475000005
出版者AMER GEOPHYSICAL UNION
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; Natural Science Foundation of China
源URL[http://ir.ieecas.cn/handle/361006/13521]  
专题地球环境研究所_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.South China Normal Univ, Sch Geog, Guangzhou, Guangdong, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Gansu, Peoples R China
3.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua, Zhejiang, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China
5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Shaanxi, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, 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.

入库方式： OAI收割

来源：地球环境研究所

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