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Pronounced changes in paleo-wind direction and dust sources during MIS3b recorded in the Tacheng loess, northwest China

文献类型：期刊论文

作者Cheng, Liangqing1,2,3; Song, Yougui1,2; Sun, Huanyu1; Bradak, Balazs4,5; Orozbaev, Rustam6,7; Zong, Xiulan1,2,3; Liu, Huifang1
刊名QUATERNARY INTERNATIONAL
出版日期2020-06-30
卷号552页码:122-134
关键词Grain size Anisotropy of magnetic susceptibility Heavy mineral Central Asia loess Heinrich event
ISSN号1040-6182
DOI10.1016/j.quaint.2019.05.002
通讯作者Song, Yougui(ygsong@loess.llqg.ac.cn)
英文摘要Central Asia loess deposits can yield detailed records of aridification across the Asian interior, as well as the atmospheric circulation. In this study, we presented grain size, heavy mineral assemblage, rock magnetism and anisotropy of magnetic susceptibility of a loess section in the Tacheng Basin in Xinjiang region, NW China. The results of anisotropy of magnetic susceptibility indicated that a near-surface SE wind prevailed in the Tacheng area since Marine Isotope Stage (MIS) 3, while a near-surface SW prevailing wind developed during MIS3b. We inferred that the change of wind direction was due to glacial advance during MIS3b. Combining the result of anisotropy of magnetic susceptibility with grain size, heavy mineral assemblage data and previously published low-field mass susceptibility revealed that dust transported by the near-surface SW wind had a greater ability to enhance magnetic susceptibility and higher amphibole/epidote ratio. Additionally, a strong Siberian High during Heinrich Event (H)5 at ca. 48 ka blocked the advection of moisture into the region via mid-latitude westerlies, causing glacial recession and the weakening of the prevailing SW wind. Our study has implications for identifying changes in paleo-wind direction and dust source, which can aid understanding of the influence of westerlies and the Siberian High on dust accumulation, as well as their interactions.
WOS关键词GRAIN-SIZE DISTRIBUTION ; MAGNETIC-SUSCEPTIBILITY AMS ; LATE QUATERNARY GLACIATION ; BE-10 SURFACE EXPOSURE ; CENTRAL-ASIA ; ILI BASIN ; TIAN-SHAN ; PALEOCLIMATIC SIGNIFICANCE ; ATMOSPHERIC CIRCULATION ; PALAEOWIND DIRECTIONS
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Basic Research Program of China[2016YFA0601902] ; Natural Science Foundation of China[41572162] ; Special Exchange Program for Russia from the Chinese Academy of Sciences ; Special Exchange Program for Ukraine from the Chinese Academy of Sciences ; Special Exchange Program for Belarus from the Chinese Academy of Sciences
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000573017600005
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Basic Research Program of China ; Natural Science Foundation of China ; Special Exchange Program for Russia from the Chinese Academy of Sciences ; Special Exchange Program for Ukraine from the Chinese Academy of Sciences ; Special Exchange Program for Belarus from the Chinese Academy of Sciences
源URL[http://ir.ieecas.cn/handle/361006/15369]  
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.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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Eotvos Lorand Univ, Dept Phys Geog, H-1117 Budapest, Hungary
5.Kobe Univ, Res Ctr Inland Seas, Nada Ku, Kobe, Hyogo 6578501, Japan
6.Natl Acad Sci Kyrgyz Republ, Inst Geol, Bishkek 720040, Kyrgyzstan
7.Amer Univ Cent Asia, Appl Geol Dept, Bishkek 720060, Kyrgyzstan
推荐引用方式
GB/T 7714		 Cheng, Liangqing,Song, Yougui,Sun, Huanyu,et al. Pronounced changes in paleo-wind direction and dust sources during MIS3b recorded in the Tacheng loess, northwest China[J]. QUATERNARY INTERNATIONAL,2020,552:122-134.
APA Cheng, Liangqing.,Song, Yougui.,Sun, Huanyu.,Bradak, Balazs.,Orozbaev, Rustam.,...&Liu, Huifang.(2020).Pronounced changes in paleo-wind direction and dust sources during MIS3b recorded in the Tacheng loess, northwest China.QUATERNARY INTERNATIONAL,552,122-134.
MLA Cheng, Liangqing,et al."Pronounced changes in paleo-wind direction and dust sources during MIS3b recorded in the Tacheng loess, northwest China".QUATERNARY INTERNATIONAL 552(2020):122-134.

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来源：地球环境研究所

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