An observational study of soil moisture effects on wind erosion at a gobi site in the Taklimakan Desert

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	An observational study of soil moisture effects on wind erosion at a gobi site in the Taklimakan Desert
	Ishizuka ; M ; Mikami ; Yamada ; Y ; Zeng ; FJ ; Gao ; WD
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2005
卷号	110 期号:D18 页码:D18S03
关键词	FRICTION VELOCITY MINERAL DUST SAHARAN DUST THRESHOLD AEROSOLS SALTATION TRANSPORT WATER SAND ASIA
ISSN号	0148-0227
通讯作者	Ishizuka, M, Kagawa Univ, Fac Engn, Dept Safety Syst Construct Engn, 2217-20 Hiyashi Cho, Kagawa 7610396, Japan
中文摘要	The measurements at a gobi site suggest that (1) saltation mass flux q(z) is particle size and soil moisture-dependent and (2) a simple relationship exists between q and wind speed u and threshold wind speed u(t)(θ). The u(t)(θ) in wet conditions (θ=0.009 m(3) m(-3)) was estimated to be 9.5 m s(-1) at a height of 3.8 m. This value is 1.27 times larger than that in dry condition, which corresponds to Fecan et al.'s theoretical result. The (q) over cap (D) in wet conditions was smaller than that in dry conditions for the particles of 69-203 μ m in diameter. However, for 38 and 54 μ m particles, the (q) over cap did not change in both dry and wet conditions. Furthermore, long-term monitoring showed that (1) the ground surface was dry during Aeolian Dust Experiment on Climate Impact (ADEC)-Intensive Observation Period (IOP) 1 (8-21 April 2002), whereas it was wet during ADEC-IOP2 (16-27 March 2003) because of snowfall at the beginning of March, and (2) the visibility frequently became worse during warm season when strong winds over the threshold wind speed blew and was dry.
学科主题	自然地理学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10524]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Ishizuka,M,Mikami,et al. An observational study of soil moisture effects on wind erosion at a gobi site in the Taklimakan Desert[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2005,110(D18):D18S03.
APA	Ishizuka.,M.,Mikami.,Yamada.,Y.,...&WD.(2005).An observational study of soil moisture effects on wind erosion at a gobi site in the Taklimakan Desert.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,110(D18),D18S03.
MLA	Ishizuka,et al."An observational study of soil moisture effects on wind erosion at a gobi site in the Taklimakan Desert".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 110.D18(2005):D18S03.