Arid
DOI10.1016/S0169-555X(97)00062-7
Wind-blown sand on beaches: an evaluation of models
Sherman, DJ; Jackson, DWT; Namikas, SL; Wang, JK
通讯作者Sherman, DJ
来源期刊GEOMORPHOLOGY
ISSN0169-555X
出版年1998
卷号22期号:2页码:113-133
英文摘要

Five models for predicting rates of aeolian sand transport were evaluated using empirical data obtained from field experiments conducted in April, 1994 at a beach on Inch Spit, Co. Kerry, Republic of Ireland. Measurements were made of vertical wind profiles (to derive shear velocity estimates), beach slope, and rates of sand transport. Sediment samples were taken to assess characteristics of grain size and surface moisture content. Estimates of threshold shear velocity were derived using grain size data. After parsing the field data on the basis of the quality of shear velocity estimation and the occurrence of blowing sand, 51 data sets describing rates of sand transport and environmental conditions were retained. Mean grain diameter was 0.17 mm. Surface slopes ranged from 0.02 on the foreshore to about 0.11 near the dune toe. Mean shear velocities ranged from 0.23 m s(-1) (just above the observed transport threshold) to 0.65 m s(-1). Rates of transport ranged from 0.02 kg m(-1) h(-1) to more than 80 kg m(-1) h(-1). These data were used as input to the models of Bagnold [Bagnold, R.A., 1936. The Movement of Desert Sand. Proc. R. Soc. London, A157, 594-620], Kawamura [Kawamura, R., 1951. Study of Sand Movement by Wind. Translated (1965) as University of California Hydraulics Engineering Laboratory Report HEL 2-8, Berkeley], Zingg [Zingg, A.W., 1953. Wind tunnel studies of the movement of sedimentary material. Proc. 5th Hydraulics Conf. Bull. 34, Iowa City, Inst. of Hydraulics, pp. 111-135], Kadib [Kadib, A.A., 1965. A function for sand movement by wind. University of California Hydraulics Engineering Laboratory Report HEL 2-8, Berkeley], and Lettau and Lettau [Lettau, K. and Lettau, H., 1977. Experimental and Micrometeorological Field Studies of Dune Migration. In: K. Lettau and H. Lettau (Eds.), Exploring the World’s Driest Climate. University of Wisconsin-Madison, IES Report 101, pp. 110-147]. Correction factors to adjust predictions of the rate of transport to account for the effects of slope and moisture content were calculated using the models of Bagnold [Bagnold, R.A., 1973. The nature of saltation and ’bed-load’ transport in water. Proc. R. Soc. London, Ser. A, 332, 473-504] and Belly [Belly, P.-Y., 1964. Sand movement by wind. U.S. Army Corps Eng. CERC. Tech. Mem. 1, Washington D.C., 38 pp.], respectively. None of the models was able to produce a strong correspondence between measured and predicted rates of transport. Best results were obtained using the Bagnold and Zingg models, and the Kadib model was the least viable of this group. The influence of sediment moisture content appeared to be the critical factor in degrading model viability. Overall, none of the models is adequate for general applications to coastal-aeolian environments where moisture content complications tend to override the predictive competence of the simple transport formulations. (C) 1998 Elsevier Science B.V.


英文关键词aeolian models wind-blown sand Ireland
类型Article ; Proceedings Paper
语种英语
国家USA ; North Ireland
收录类别CPCI-S ; SCI-E
WOS记录号WOS:000072403800002
WOS关键词COASTAL DUNES ; TRANSPORT ; SALTATION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/135791
作者单位(1)Univ So Calif, Dept Geog, Los Angeles, CA 90089 USA;(2)Univ Ulster, Dept Environm Studies, Coleraine BT52 1SA, Londonderry, North Ireland
推荐引用方式
GB/T 7714
Sherman, DJ,Jackson, DWT,Namikas, SL,et al. Wind-blown sand on beaches: an evaluation of models[J],1998,22(2):113-133.
APA Sherman, DJ,Jackson, DWT,Namikas, SL,&Wang, JK.(1998).Wind-blown sand on beaches: an evaluation of models.GEOMORPHOLOGY,22(2),113-133.
MLA Sherman, DJ,et al."Wind-blown sand on beaches: an evaluation of models".GEOMORPHOLOGY 22.2(1998):113-133.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sherman, DJ]的文章
[Jackson, DWT]的文章
[Namikas, SL]的文章
百度学术
百度学术中相似的文章
[Sherman, DJ]的文章
[Jackson, DWT]的文章
[Namikas, SL]的文章
必应学术
必应学术中相似的文章
[Sherman, DJ]的文章
[Jackson, DWT]的文章
[Namikas, SL]的文章
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。