Aeolian transport over a developing transverse dune (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Aeolian transport over a developing transverse dune (SCI)
	Dong Z. B. ; Lv P. ; Zhang Z. C. ; Lu J. F.
刊名	Journal of Arid Land
	2014
卷号	6 期号:3 页码:243-254
英文摘要	The spatial and temporal changes in aeolian transport over a dune are fundamental factors that control the morphology of the dune. In the present study, we obtained direct field observations of aeolian transport over a developing transverse dune at the Shapotou Aeolian Experiment Site in the southeastern part of China's Tengger Desert. The transport rate versus wind speed relationship is complicated over a developing dune compared with the relationships over flat surfaces and over dunes that are in equilibrium with the wind. We obtained trend lines for transport rate over the transverse dune versus distance. The transport rate generally increased from the toe to the crest above the stoss slope, but the difference in transport rate between the crest and the toe was smaller than those that have been proposed for taller dunes. The crest/toe ratio for transport rates therefore seems to depend greatly on dune height. Flux density profiles for different points above the dune at different wind speeds were well described by the exponential decay law, as has been proposed for saltation flux density profiles. Coefficients in the flux density profile function can be defined in terms of the transport rate and wind speed. However, the dependence of relative decay rate with height and average saltation height on wind speed was weaker than that observed in a wind tunnel and above a flat surface. The preliminary results obtained in this study require more evidence from field observations to fully describe aeolian transport above developing dunes.
收录类别	SCI
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/24967]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Dong Z. B.,Lv P.,Zhang Z. C.,et al. Aeolian transport over a developing transverse dune (SCI)[J]. Journal of Arid Land,2014,6(3):243-254.
APA	Dong Z. B.,Lv P.,Zhang Z. C.,&Lu J. F..(2014).Aeolian transport over a developing transverse dune (SCI).Journal of Arid Land,6(3),243-254.
MLA	Dong Z. B.,et al."Aeolian transport over a developing transverse dune (SCI)".Journal of Arid Land 6.3(2014):243-254.