Arid
DOI10.1016/j.geomorph.2015.03.017
Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study
Wang, Xunming1,2; Lang, Lili1; Hua, Ting2; Zhang, Caixia2; Xia, Dunsheng3
通讯作者Lang, Lili
来源期刊GEOMORPHOLOGY
ISSN0169-555X
EISSN1872-695X
出版年2015
卷号239页码:106-113
英文摘要

By combining field investigations, field sampling, wind-tunnel experiments, and laboratory measurements, the relationships between near-surface winds and the geochemical and magnetic characteristics of windtransported materials were statistically analyzed. Our study was conducted using bulk surface samples from a major potential dust source area in Central Asia (the Ala Shan Plateau). Under near-surface wind velocities ranging from 8 to 22 m/s, the coefficients of variation ranged between 1.6% and 14.9% for chi(if), 1.4% and 11.0% for chi(ARm), and 0.7% and 123% for SIRM of the transported materials. For the 26 elements and oxides investigated, the coefficients of variation of Ti, Cr, As, Zr, Ce, Pb, and Cu in the samples were greater than 10%. No consistent patterns were found between magnetic characteristics and elemental and iron oxide concentrations as a function of variations in near-surface wind velocities. In potential dust source areas under near-surface wind velocities, there are variations in the relationships between magnetic and geochemical characteristics in the fine fractions of transported materials with different particle sizes. Given the wide variation in magnetic and geochemical characteristics of aeolian-transported materials under different near-surface winds, their use as proxies for past climate reconstruction must be carefully appraised. (C) 2015 Elsevier B.V. All rights reserved.


英文关键词Aeolian process Near-surface wind Transported materials Rock magnetism Geochemistry
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000355037000008
WOS关键词CHINESE LOESS PLATEAU ; NORTHERN CHINA ; PALEOCLIMATIC IMPLICATIONS ; NORTHWESTERN CHINA ; DUST EMISSIONS ; SOURCE REGIONS ; MINERAL DUST ; GOBI DESERT ; SR ISOTOPE ; ASIAN DUST
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构兰州大学 ; 中国科学院西北生态环境资源研究院 ; 中国科学院地理科学与资源研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/187522
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, Peoples R China;
3.Lanzhou Univ, Minist Educ, Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xunming,Lang, Lili,Hua, Ting,et al. Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study[J]. 兰州大学, 中国科学院西北生态环境资源研究院, 中国科学院地理科学与资源研究所,2015,239:106-113.
APA Wang, Xunming,Lang, Lili,Hua, Ting,Zhang, Caixia,&Xia, Dunsheng.(2015).Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study.GEOMORPHOLOGY,239,106-113.
MLA Wang, Xunming,et al."Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study".GEOMORPHOLOGY 239(2015):106-113.
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