干旱区生态环境知识资源中心(Arid): Statistical comparisons of grain size characteristics, hydraulic conductivity, and porosity of barchan desert dunes to coastal dunes

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DOI	10.1016/j.aeolia.2020.100576
	Statistical comparisons of grain size characteristics, hydraulic conductivity, and porosity of barchan desert dunes to coastal dunes
	Lopez, Oliver M.1; Hegy, Michael C.2; Missimer, Thomas M.2
通讯作者	Missimer, Thomas M.
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2020
卷号	43
英文摘要	Ancient dune sand environments in deserts and coasts are aquifers and hydrocarbon reservoirs that commonly have preserved high permeability (hydraulic conductivity). A paucity of research has been performed on variations in the distribution of permeability associated with the positions within the dunes and the differences between these patterns in desert and coastal dunes. A comparison of dune sand grain size and hydraulic properties of a desert barchan dune field in Saudi Arabia to a coastal dune field in Uruguay has revealed some important differences and similarities. The grain size characteristics show that the mean grain diameter was significantly lower in the barchan dune field compared to the coastal dune field (1.95-2.79 phi) and the sorting was better in the coastal dune field (0.40-0.66 phi). The skewness and kurtosis of the dune sands were not significantly different with the skewness < 0.1 and the kurtosis near 1.0. No statistical differences based on dune position were found in the coastal dunes, but there were significant differences in position in the desert dunes. The porosity differed between the desert dunes and the coastal dunes with the mean values being 0.39 and 0.35 respectively. No significant porosity variation with dune position was found in either dune type. The coastal dunes had a significantly higher mean hydraulic conductivity of 25.3 m/d compared to the desert dunes of 9.32 m/d. The dune crests in the desert dunes had significantly higher hydraulic conductivity values compared to other locations in the dune profile.
类型	Article
语种	英语
国家	Saudi Arabia ; USA
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000526121300006
WOS关键词	LINEAR DUNES ; LONGITUDINAL-DUNE ; SANDS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313905
作者单位	1.King Abdullah Univ Sci & Engn, WDRC, Biol & Environm Sci & Engn Div BESE, Thuwal 239556900, Saudi Arabia; 2.Florida Gulf Coast Univ, UA Whitaker Coll Engn, Emergent Technol Inst, 16301 Innovat Lane, Ft Myers, FL 33913 USA
推荐引用方式 GB/T 7714	Lopez, Oliver M.,Hegy, Michael C.,Missimer, Thomas M.. Statistical comparisons of grain size characteristics, hydraulic conductivity, and porosity of barchan desert dunes to coastal dunes[J],2020,43.
APA	Lopez, Oliver M.,Hegy, Michael C.,&Missimer, Thomas M..(2020).Statistical comparisons of grain size characteristics, hydraulic conductivity, and porosity of barchan desert dunes to coastal dunes.AEOLIAN RESEARCH,43.
MLA	Lopez, Oliver M.,et al."Statistical comparisons of grain size characteristics, hydraulic conductivity, and porosity of barchan desert dunes to coastal dunes".AEOLIAN RESEARCH 43(2020).