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	Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study
	Wang X. M.; Lang, L. L.; Hua, T.; Zhang, C. X.; Xia, D. S.
	2015
关键词	Aeolian process Near-surface wind Transported materials Rock magnetism Geochemistry chinese loess plateau northern china paleoclimatic implications northwestern china dust emissions source regions mineral dust gobi desert sr isotope asian dust
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.
出处	Geomorphology
卷	239
页	106-113
收录类别	SCI
语种	英语
ISSN号	0169-555X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38909]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang X. M.,Lang, L. L.,Hua, T.,et al. Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study. 2015.

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