干旱区生态环境知识资源中心(Arid): Near-surface wind environment in the Yarlung Zangbo River basin, southern Tibetan Plateau

Arid

	Near-surface wind environment in the Yarlung Zangbo River basin, southern Tibetan Plateau
	Yang Junhuai; Xia Dunsheng; Wang Shuyuan; Tian Weidong; Ma Xingyue; Chen Zixuan; Gao Fuyuan; Ling Zhiyong; Dong Zhibao
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2020
卷号	12 期号:6
英文摘要	Aeolian processes have been studied extensively at low elevations, but have been relatively little studied at high elevations. Aeolian sediments are widely distributed in the Yarlung Zangbo River basin, southern Tibetan Plateau, which is characterized by low pressure and low temperature. Here, we comprehensively analyzed the wind regime using data since 1980 from 11 meteorological stations in the study area, and examined the interaction between the near-surface wind and aeolian environment. The wind environment exhibited significant spatial and temporal variation, and mean wind speed has generally decreased on both annual and seasonal bases since 1980, at an average of 0.181 m/(s·10a). This decrease resulted from the reduced contribution of maximum wind speed, and depended strongly on variations of the frequency of sand-driving winds. The drift potential and related parameters also showed obvious spatial and temporal variation, with similar driving forces for the wind environment. The strength of the wind regime affected the formation and development of the aeolian geomorphological pattern, but with variation caused by local topography and sediment sources. The drift potential and resultant drift direction were two key parameters, as they quantify the dynamic conditions and depositional orientation of the aeolian sediments. Wind affected the spatial variation in sediment grain size, but the source material and complex topographic effects on the near-surface wind were the underlying causes for the grain size distribution of aeolian sands. These results will support efforts to control aeolian desertification in the basin and improve our understanding of aeolian processes in high-elevation environments.
英文关键词	wind regime sand dune aeolian activity Yarlung Zangbo River Tibetan Plateau
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:6883248
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353501
推荐引用方式 GB/T 7714	Yang Junhuai,Xia Dunsheng,Wang Shuyuan,et al. Near-surface wind environment in the Yarlung Zangbo River basin, southern Tibetan Plateau[J],2020,12(6).
APA	Yang Junhuai.,Xia Dunsheng.,Wang Shuyuan.,Tian Weidong.,Ma Xingyue.,...&Dong Zhibao.(2020).Near-surface wind environment in the Yarlung Zangbo River basin, southern Tibetan Plateau.干旱区科学,12(6).
MLA	Yang Junhuai,et al."Near-surface wind environment in the Yarlung Zangbo River basin, southern Tibetan Plateau".干旱区科学 12.6(2020).