Vertical profiles of aeolian sand mass flux

doi:10.1016/S0169-555X(02)00169-1

CORC > 北京大学 > 环境科学与工程学院

	Vertical profiles of aeolian sand mass flux
	Ni, JR ; Li, ZS ; Mendoza, C
刊名	geomorphology
	2003
关键词	mass flux profile wind tunnel experiment Sand trap trap efficiency WIND-BLOWN SAND MATHEMATICAL-MODEL DUST STORMS TRANSPORT SEDIMENT SALTATION
DOI	10.1016/S0169-555X(02)00169-1
英文摘要	Vertical profiles of the horizontal mass flux of blown sand are investigated experimentally using a passive vertical array in a wind runnel. Considering lower sampling efficiency of the sand trap in the near-bed region, this investigation is complemented by the measurements of the longitudinal profiles of mass flux made using a horizontal sand trap. The experiments were conducted with two test sands and five different stream velocities. In the upper part of the vertical profile, the measured data exhibit an exponential decay distribution with a positive deviation occurring in the near-bed region. The measured longitudinal profiles are similar to the measured vertical profiles. Linking both profiles and the modes of sand transport, it is possible that saltating sand grains give rise to the well-known exponential decay distribution of mass flux, and that creeping and reptating grains force a deviation from it. A simple equation applicable for both the vertical and the longitudinal sand mass flux variations is introduced and the parameters are estimated from experimental data. (C) 2002 Elsevier Science B.V. All rights reserved.; Geography, Physical; Geosciences, Multidisciplinary; SCI(E); 10; ARTICLE; 3-4; 205-218; 49
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/256211]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Ni, JR,Li, ZS,Mendoza, C. Vertical profiles of aeolian sand mass flux[J]. geomorphology,2003.
APA	Ni, JR,Li, ZS,&Mendoza, C.(2003).Vertical profiles of aeolian sand mass flux.geomorphology.
MLA	Ni, JR,et al."Vertical profiles of aeolian sand mass flux".geomorphology (2003).