干旱区生态环境知识资源中心(Arid): Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert, Mongolia

Arid

	Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert, Mongolia
	Buyantogtokh Batjargal; Kurosaki Yasunori; Tsunekawa Atsushi; Tsubo Mitsuru; Gantsetseg Batdelger; Davaadorj Amarsaikhan; Ishizuka Masahide; Sekiyama Tsuyoshi T; Tanaka Taichu Y; Maki Takashi
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2021
卷号	13 期号:7 页码:1674-6767
英文摘要	Non-erodible elements such as stones and vegetation are key to controlling wind erosion and dust emission in drylands. Stony deserts are widely distributed in the Gobi Desert, but the effect of stones on wind erosion and dust emission have not been well studied, except under artificial conditions. In this study, we evaluated the effect of stones on wind erosion and dust emission by measuring the sand saltation threshold in a stony desert in Tsogt-Ovoo in the Gobi Desert, Mongolia, under natural surface conditions during sand and dust storms. We quantified the amount of stones by measuring the roughness density, and determined the threshold frietion velocity for sand saltation by measuring wind speed and sand saltation count. Our results showed that the threshold friction velocity increased with the roughness density of stones. In the northern part of the study area, where neither a surface crust nor vegetation was observed, the roughness density of stones was 0.000 in a topographic depression(TD), 0.050 on a northern slope(N.SL), and 0.160 on the northern mountain(N.MT). The mean threshold friction velocity values were 0.23, 0.41, and 0.57 m/s at the TD, N.SL, and N.MT sites, respectively. In the southern part of the study area, the roughness density values of stones were 0.000 and 0.070-0.320 at the TD and southern slope sites, respectively, and the mean threshold friction velocities were 0.23 and 0.45-0.71 m/s, respectively. We further compared the observed threshold friction velocities with simulated threshold friction velocities using Raupach's theoretical roughness correction and the measured roughness density values, and found that Raupach's roughness correction worked very well in the simulation of threshold friction velocity in the stony desert. This means that the results of our stone measurement can be applied to a numerical dust model.
英文关键词	arid region threshold friction velocity roughness density shear stress sand saltation threshold roughness correction Gobi Desert
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	History
CSCD记录号	CSCD:7025978
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365055
作者单位	Buyantogtokh Batjargal, Arid Land Research Center, Tottori University;;Information and Research Institute of Meteorology, Hydrology and Environment, ;;, Tottori;;Ulaanbaatar, Japan;;Mongolia 680-0001;;15160.; Kurosaki Yasunori, Arid Land Research Center, Tottori University, Tottori 680-0001, Japan.; Tsunekawa Atsushi, Arid Land Research Center, Tottori University, Tottori 680-0001, Japan.; Tsubo Mitsuru, Arid Land Research Center, Tottori University, Tottori 680-0001, Japan.; Gantsetseg Batdelger, Information and Research Institute of Meteorology, Hydrology and Environment, Ulaanbaatar, 15160, Mongolia.; Davaadorj Amarsaikhan, Information and Research Institute of Meteorology, Hydrology and Environment, Ulaanbaatar, 15160, Mongolia.; Ishizuka Masahide, Faculty of Engineering and Design, Kagawa University, Takamatsu, 761-0396, Japan.; Sekiyama Tsuyoshi T, Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, 305-0052, Japan.; Tanaka Taichu Y, Meteorological Research Institute, Japan Mete...
推荐引用方式 GB/T 7714	Buyantogtokh Batjargal,Kurosaki Yasunori,Tsunekawa Atsushi,et al. Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert, Mongolia[J],2021,13(7):1674-6767.
APA	Buyantogtokh Batjargal.,Kurosaki Yasunori.,Tsunekawa Atsushi.,Tsubo Mitsuru.,Gantsetseg Batdelger.,...&Maki Takashi.(2021).Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert, Mongolia.干旱区科学,13(7),1674-6767.
MLA	Buyantogtokh Batjargal,et al."Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert, Mongolia".干旱区科学 13.7(2021):1674-6767.