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The effects of sorting by aeolian processes on the geochemical characteristics of surface materials: a wind tunnel experiment

文献类型：期刊论文

作者Wang, Xunming1,2; Lang, Lili1; Hua, Ting2; Zhang, Caixia2; Li, Hui2
刊名FRONTIERS OF EARTH SCIENCE
出版日期2018-03-01
卷号12期号:1页码:86-94
关键词aeolian process transported material geochemistry
ISSN号2095-0195
DOI10.1007/s11707-017-0619-2
通讯作者Wang, Xunming(xunming@igsnrr.ac.cn)
英文摘要The geochemical characteristics of aeolian and surface materials in potential source areas of dust are frequently employed in environmental reconstructions as proxies of past climate and as source tracers of aeolian sediments deposited in downwind areas. However, variations in the geochemical characteristics of these aeolian deposits that result from near-surface winds are currently poorly understood. In this study, we collected surface samples from the Ala Shan Plateau (a major potential dust source area in Central Asia) to determine the influence of aeolian processes on the geochemical characteristics of aeolian transported materials. Correlation analyses show that compared with surface materials, the elements in transported materials (e.g., Cu, As, Pb, Mn, Zn, Al, Ca, Fe, Ga, K, Mg, P, Rb, Co, Cr, Na, Nb, Si, and Zr) were subjected to significant sorting by aeolian processes, and the sorting also varied among different particle size fractions and elements. Variations in wind velocity were significantly correlated with the contents of Cr, Ga, Sr, Ca, Y, Nd, Zr, Nb, Ba, and Al, and with the Zr/Al, Zr/Rb, K/Ca, Sr/Ca, Rb/Sr, and Ca/Al ratios. Given the great variation in the geochemical characteristics of materials transported under different aeolian processes relative to those of the source materials, these results indicate that considerable uncertainty may be introduced to analyses by using surface materials to trace the potential source areas of aeolian deposits that accumulate in downwind areas.
WOS关键词CHINESE LOESS PLATEAU ; TIBETAN PLATEAU ; ASIAN DUST ; ISOTOPIC CHARACTERISTICS ; EOLIAN DEPOSITS ; TRACE-ELEMENTS ; MONSOON ; DESERT ; PROVENANCE ; VARIABILITY
资助项目National Key Research and Development Program of China[2016YFA0601900] ; National Natural Science Foundation of China[41225001] ; National Natural Science Foundation of China[41401005] ; Foundation of the Director of the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
WOS研究方向Geology
语种英语
WOS记录号WOS:000425157200008
出版者SPRINGER
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Foundation of the Director of the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/56998]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Xunming
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Cold & Arid Reg Environm Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xunming,Lang, Lili,Hua, Ting,et al. The effects of sorting by aeolian processes on the geochemical characteristics of surface materials: a wind tunnel experiment[J]. FRONTIERS OF EARTH SCIENCE,2018,12(1):86-94.
APA Wang, Xunming,Lang, Lili,Hua, Ting,Zhang, Caixia,&Li, Hui.(2018).The effects of sorting by aeolian processes on the geochemical characteristics of surface materials: a wind tunnel experiment.FRONTIERS OF EARTH SCIENCE,12(1),86-94.
MLA Wang, Xunming,et al."The effects of sorting by aeolian processes on the geochemical characteristics of surface materials: a wind tunnel experiment".FRONTIERS OF EARTH SCIENCE 12.1(2018):86-94.

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来源：地理科学与资源研究所

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