QQ客服 官方微博 反馈留言

	Scratching technique for the study and analysis of soil surface abrasion mechanism
	Ta, Wanquan
刊名	GEOMORPHOLOGY
	2007-11-15
卷号	92期号:1-2页码:1-11
关键词	wind abrasion scratching test plastic deformation brittle cracking specific surface abrasive energy specific surface hardness
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2007.02.010
通讯作者	Ta, Wanquan(tawq@ns.lzb.ac.cn)
英文摘要	Aeolian abrasion is the most fundamental and active surface process that takes place in and and semi-arid environments. Its nature is a wear process for wind blown grains impinging on a soil or sediment surface, which causes particles and aggregates to fracture from the soil surface through a series of plastic and brittle cracking deformation such as cutting, ploughing and brittle fracturing. Using a Universal Micro-Tribometer (UNIT), a scratching test was carried out on six soil surfaces (sandy soil, sand loam, silt loam, loam, silt clay loam, and silt clay). The results indicate that traces of normal and tangential force vs. time show a jagged curve, which can reflect the plastic deformation and brittle fracturing of aggregates and particles of various sizes fractured from the soil surfaces. The jagged curve peaks, and the area enclosed underneath, may represent the bonding forces and bonding energies of some aggregates and grains on the soil surface, respectively. Connecting the scratching test with an impact abrasion experiment furthermore demonstrates that soil surface abrasion rates are proportional to the square of speeds of impacting particles and to the 2.6 power of mean soil grain size, and inversely proportional to the 1.5 power of specific surface abrasive energy or to the 1.7 power of specific surface hardness. (c) 2007 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	DUST EMISSION SCHEME ; SALTATING PARTICLES ; WIND EROSION ; CRUST STRENGTH ; ADHESION ; TUNNEL ; MODEL ; SAND ; RESUSPENSION ; BOMBARDMENT
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000251892300001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555964
专题	寒区旱区环境与工程研究所
通讯作者	Ta, Wanquan
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ta, Wanquan. Scratching technique for the study and analysis of soil surface abrasion mechanism[J]. GEOMORPHOLOGY,2007,92(1-2):1-11.
APA	Ta, Wanquan.(2007).Scratching technique for the study and analysis of soil surface abrasion mechanism.GEOMORPHOLOGY,92(1-2),1-11.
MLA	Ta, Wanquan."Scratching technique for the study and analysis of soil surface abrasion mechanism".GEOMORPHOLOGY 92.1-2(2007):1-11.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。