兰州大学机构库 >资源环境学院
Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China
Xia, DS(夏敦胜)1; Wang, Youjun2; Jia, Jia3; Wei, HT(魏海涛)1; Fan, Yijiao1; Jin, M(金明)1; Chen, FH(陈发虎)1,4
2020-07
Source PublicationATMOSPHERIC ENVIRONMENT
ISSN1352-2310
Volume232
AbstractThe arid basins in NW China are one of the most important sources of Asian atmospheric dust. Numerous studies have been conducted of dust flux and its physical and chemical characteristics in terrestrial and marine sediments in East Asia. However, knowledge of the exact sources of the emitted dust is comparatively limited. In this study, we investigated the magnetic characteristics of 541 surface samples collected in NW China. Based on the application of cluster analysis, we propose that the silt in arid basins is sourced from the surrounding high mountains, and that rivers play an important role in transporting the material, whereas sand dunes are only a relatively limited store of silt. Comparison of the results with the magnetic characteristics of loess samples from the Chinese Loess Plateau (CLP) indicates that the slopes of the Kunlun-Alkin-Qilian Mountains System and the surrounding fluvial plains are the major sources of silty dust in NW China, and that the contribution of sediment from sand dunes has been overestimated. In addition, our results indicate that magnetic fingerprinting can be used to trace the pathway of dust transport, and that the loess deposits in central Asia and the CLP are more accurately described as 'mountain loess' rather than 'desert loess'.
KeywordDust emission Sediment provenance Magnetic fingerprinting Northwest China
DOI10.1016/j.atmosenv.2020.117564
Indexed ByEI ; SCIE
Language英语
Funding ProjectSecond Tibetan Plateau Scientific Expedition and Research Program (STEP) Grant[2019QZKK0602] ; National Natural Science Foundation of China[41877444][41401046]
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000539152100015
PublisherPERGAMON-ELSEVIER SCIENCE LTD
EI Accession Number20202008649580
EI KeywordsAtmospheric chemistry ; Cluster analysis ; Dust ; Landforms ; Magnetism ; Silt ; Submarine geology
EI Classification NumberAtmospheric Properties:443.1 ; Air Pollution Sources:451.1 ; Geology:481.1 ; Soil Mechanics and Foundations:483 ; Soils and Soil Mechanics:483.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Computer Software, Data Handling and Applications:723
Original Document TypeArticle
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Cited Times:0[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/423158
Collection资源环境学院
Corresponding AuthorXia, Dunsheng; Wang, Youjun
Affiliation1.Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China
2.Zaozhuang Univ, Coll Tourism & Resource Environm, Zaozhuang 277100, Peoples R China
3.Zhejiang Normal Univ, Coll Geog & Environm Sci, Hangzhou 321004, Zhejiang, Peoples R China
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China
First Author AffilicationCollege of Earth Environmental Sciences
Corresponding Author AffilicationCollege of Earth Environmental Sciences
Recommended Citation
GB/T 7714
Xia, Dunsheng,Wang, Youjun,Jia, Jia,et al. Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China[J]. ATMOSPHERIC ENVIRONMENT,2020,232.
APA Xia, Dunsheng.,Wang, Youjun.,Jia, Jia.,Wei, Haitao.,Fan, Yijiao.,...&Chen, Fahu.(2020).Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China.ATMOSPHERIC ENVIRONMENT,232.
MLA Xia, Dunsheng,et al."Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China".ATMOSPHERIC ENVIRONMENT 232(2020).
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