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Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia

文献类型：期刊论文

作者Wu, Xudong1; Li, Xiangzhong2,3; Li, Junfeng4; Wang, Min2; Ji, Ming5; Cao, Yunning3; Hu, Jing3; Zhang, Pu6
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2020-12-15
卷号560页码:10
ISSN号0031-0182
关键词Tibetan Plateau Kuhai Lake Grain size End-member Sedimentology
DOI10.1016/j.palaeo.2020.110022
通讯作者Li, Xiangzhong(xzhli04@163.com) ; Ji, Ming(mji@niglas.ac.cn)
英文摘要Eolian dust activity studies on the arid Central Asia (ACA), one of the world's largest dust sources, are of great importance to the global climatic system. Grain size distributions (GSDs) can provide information on sediment sources, transport processes and sedimentary environments. As a result, GSD is the most frequently applied proxy in reconstruction of past eolian dust activities of the ACA using lake sediments. The GSD dataset for a core spanning the last similar to 850 years from Kuhai Lake on the northeastern Tibetan Plateau was unmixed by end-member analysis (EMA) for reconstruction of past eolian dust activities on the southeastern margin of the ACA. The results suggest that EM 2 and EM 3, which were added together to form an eolian dust activity proxy, represent the proximal eolian suspension and saltation loads, respectively. The fractional abundances of EMs suggest that siliciclastic materials in the studied core were mainly from eolian contributions. The occurrence of enhanced eolian dust activities within the cold Little Ice Age period together with the GSDs of EM 2 and EM 3 indicate that eolian dust activities on the southeastern margin of the ACA were basically governed by the Siberian High-produced Asian Winter Monsoon over the last millennium. At decadal to centennial scales, enhanced eolian dust activities generally correspond to warm periods with high total solar irradiance (TSI). Increased temperatures as the result of high TSI would have caused larger increases in evaporation than in precipitation, and hence deteriorated vegetation cover and increased dust sources availability.
WOS关键词NORTHEASTERN TIBETAN PLATEAU ; GRAIN-SIZE ; CLIMATE CHANGES ; NORTHERN CHINA ; LAKE SUGAN ; SEDIMENTS ; RECORD ; DEPOSITION ; MONSOON ; VARIABILITY
资助项目National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41991323] ; National Natural Science Foundation of China[41502165] ; National Natural Science Foundation of China[41672163] ; National Natural Science Foundation of China[41873013] ; Youth Innovation Promotion Association CAS[Y201759] ; China Scholarship Council (CSC)
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
出版者ELSEVIER
WOS记录号WOS:000591245000032
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; China Scholarship Council (CSC)
源URL[http://ir.ieecas.cn/handle/361006/15711]  
专题地球环境研究所_加速器质谱中心
通讯作者Li, Xiangzhong; Ji, Ming
作者单位1.Hebei GEO Univ, Sch Land Sci & Space Planning, Shijiazhuang 050031, Hebei, Peoples R China
2.Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.Shijiazhuang Univ, Dept Resources & Environm Sci, Shijiazhuang 050035, Hebei, Peoples R China
5.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China
6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Xudong,Li, Xiangzhong,Li, Junfeng,et al. Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,560:10.
APA Wu, Xudong.,Li, Xiangzhong.,Li, Junfeng.,Wang, Min.,Ji, Ming.,...&Zhang, Pu.(2020).Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,560,10.
MLA Wu, Xudong,et al."Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 560(2020):10.

入库方式： OAI收割

来源：地球环境研究所

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