气候变化领域集成服务门户(CCPortal): Wind as the primary driver of erosion in the Qaidam Basin, China

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DOI	10.1016/j.epsl.2013.03.011
	Wind as the primary driver of erosion in the Qaidam Basin, China
	Rohrmann, Alexander; Heermance, Richard; Kapp, Paul; Cai, Fulong
通讯作者	Rohrmann, A (通讯作者)
发表日期	2013
ISSN	0012-821X
EISSN	1385-013X
起始页码	1
结束页码	10
卷号	374
英文摘要	Deserts are a major source of loess and may undergo substantial wind-erosion as evidenced by yardang fields, deflation pans, and wind-scoured bedrock landscapes. However, there are few quantitative estimates of bedrock removal by wind abrasion and deflation. Here, we report wind-erosion rates in the western Qaidam Basin in central China based on measurements of cosmogenic Be-10 in exhumed Miocene sedimentary bedrock. Sedimentary bedrock erosion rates range from 0.05 to 0.4 mm/yr, although the majority of measurements cluster at 0.125 +/- 0.05 mm/yr. These results, combined with previous work, indicate that strong winds, hyper-aridity, exposure of friable Neogene strata, and ongoing rock deformation and uplift in the western Qaidam Basin have created an environment where wind, instead of water, is the dominant agent of erosion and sediment transport. Its geographic location (upwind) combined with volumetric estimates suggest that the Qaidam Basin is a major source (up to 50%) of dust to the Chinese Loess Plateau to the east. The cosmogenically derived wind erosion rates are within the range of erosion rates determined from glacial and fluvial dominated landscapes worldwide, exemplifying the effectiveness of wind to erode and transport significant quantities of bedrock. (C) 2013 Elsevier B.V. All rights reserved.
关键词	COSMOGENIC NUCLIDES TIBETAN PLATEAU CLIMATE-CHANGE ICE CORE RATES DUST DESERT BE-10 QUATERNARY HISTORY
英文关键词	wind; cosmogenic nuclide-dating; earth surface processes; Chinese Loess Plateau; climate; Asia
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000324663700001
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258208
推荐引用方式 GB/T 7714	Rohrmann, Alexander,Heermance, Richard,Kapp, Paul,et al. Wind as the primary driver of erosion in the Qaidam Basin, China[J]. 中国科学院青藏高原研究所,2013,374.
APA	Rohrmann, Alexander,Heermance, Richard,Kapp, Paul,&Cai, Fulong.(2013).Wind as the primary driver of erosion in the Qaidam Basin, China.EARTH AND PLANETARY SCIENCE LETTERS,374.
MLA	Rohrmann, Alexander,et al."Wind as the primary driver of erosion in the Qaidam Basin, China".EARTH AND PLANETARY SCIENCE LETTERS 374(2013).