干旱区生态环境知识资源中心(Arid): Vertical Distribution of Aleurite and Sand Particles in Windsand Flux over a Desertified Area

Arid

DOI	10.1134/S0001433821050078
	Vertical Distribution of Aleurite and Sand Particles in Windsand Flux over a Desertified Area
	Gorchakov, G., I; Karpov, A., V; Gushchin, R. A.; Datsenko, O., I; Buntov, D., V
通讯作者	Gorchakov, GI (corresponding author), Russian Acad Sci, Obukhov Inst Atmospher Phys, Moscow 119017, Russia.
来源期刊	IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS
ISSN	0001-4338
EISSN	1555-628X
出版年	2021
卷号	57 期号:5 页码:486-494
英文摘要	Measurements in a desertified area in Astrakhan oblast at heights from 3 to 15 cm under almost nonintermittent saltation on August 23 and September 9, 2011, have been used to determine the size distribution functions of saltating particles in the range from 30 to 330 mu m and the vertical profiles of differential number concentrations of particles with sizes of 47.0, 85.6, 104.6, 127.7, and 156.0 mu m, which are approximated by exponents. In the lower saltation layer of around 9 cm in thickness, the height scale and the logarithmic concentration gradient have been found to be independent of wind speed. At heights of 11 and 15 cm, the total concentration of saltating particles is nonlinearly related to wind speed in the atmospheric surface layer. For the variation range of wind speeds from 6 to 11.0 m/s, vertical distributions of the concentration of saltating particles have been constructed using approximations by piecewise exponential profiles of the total concentration of particles. An analytical dependence of the logarithmic concentration gradient in the upper saltation layer on the wind speed has been obtained. A small-parameter model of the vertical distribution of saltating particles in the range of heights from 0 to 15 cm has been developed. Approximations of dependences of the height scale on the particle size have been proposed for the vertical profiles of concentration and mass fluxes of saltating particles.
英文关键词	desertification windsand flux almost nonintermittent saltation saltating aleurite particles vertical distribution of particle concentration piecewise exponential approximation height scale logarithmic concentration gradient low-layer saltation thickness small parametric model of vertical concentration distribution
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000715824300005
WOS关键词	SIZE DISTRIBUTION ; GRAIN TRANSPORT ; DUST EMISSION ; SALTATION ; AEROSOL ; FORCE
WOS类目	Meteorology & Atmospheric Sciences ; Oceanography
WOS研究方向	Meteorology & Atmospheric Sciences ; Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367929
作者单位	[Gorchakov, G., I; Karpov, A., V; Gushchin, R. A.; Datsenko, O., I; Buntov, D., V] Russian Acad Sci, Obukhov Inst Atmospher Phys, Moscow 119017, Russia
推荐引用方式 GB/T 7714	Gorchakov, G., I,Karpov, A., V,Gushchin, R. A.,et al. Vertical Distribution of Aleurite and Sand Particles in Windsand Flux over a Desertified Area[J],2021,57(5):486-494.
APA	Gorchakov, G., I,Karpov, A., V,Gushchin, R. A.,Datsenko, O., I,&Buntov, D., V.(2021).Vertical Distribution of Aleurite and Sand Particles in Windsand Flux over a Desertified Area.IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS,57(5),486-494.
MLA	Gorchakov, G., I,et al."Vertical Distribution of Aleurite and Sand Particles in Windsand Flux over a Desertified Area".IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS 57.5(2021):486-494.