干旱区生态环境知识资源中心(Arid): Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia

Arid

DOI	10.3390/w12030682
	Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia
	Benaafi, Mohammed 1; Hanafy, Sherif M.2; Al-Shuhail, Abdullatif 2; El-Husseiny, Ammar 2; Dvorkin, Jack 2
通讯作者	Benaafi, Mohammed
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:3
英文摘要	In arid countries such as Saudi Arabia, aeolian sand often covers a large area of the country. Understanding the variations of sand properties in dunes, including grain size, sorting, mineral composition and water content, can be important for groundwater recharge, environmental, and construction applications. Earlier studies examined properties of sand dunes by collecting samples from the surface. This study aims to investigate variations of sand properties within a Barchan sand dune in the coastal area of Saudi Arabia, by collecting samples and measurements from two vertically drilled boreholes up to the ground water level; one drilled in the dune crest and another one in the limb. Representative samples were collected and analyzed for their texture parameters, water content, and mineralogy. Electrical resistivity survey data was also acquired to map water content variation in the dune limb, and for comparison with well bore data. The reported results show no vertical variations in grain size or sorting in the dune crest. In contrast, the upper 0.5 m of the dune limb shows a relatively poorer sorting than found in deeper parts of the dune. Laterally, no variations in minerology were observed between crest and limb sands while grain size tended to be slightly coarser in the dune limb compared to the crest. Regarding the water content, it was found to vary vertically, probably due to previous cycles of rainfall infiltration through the sand body. Such observed variation in water content is consistent with the measured resistivity profile which could clearly identify the water table and areas with higher water content. This study concludes that beyond the upper 0.5 m, the Barchan sand dune body can be treated as a homogeneous medium in terms of mineralogy and sorting while grain size increases slightly toward the limb side.
英文关键词	Barchan sand dune Saudi Arabia electrical resistivity vadose zone sand moisture hydrogeology
类型	Article
语种	英语
国家	Saudi Arabia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000529249500067
WOS关键词	DESERT
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318879
作者单位	1.King Fahd Univ Petr & Minerals, Ctr Environm & Water, Dhahran 34464, Saudi Arabia; 2.King Fahd Univ Petr & Minerals, Coll Petr Engn & Geosci, Dhahran 34464, Saudi Arabia
推荐引用方式 GB/T 7714	Benaafi, Mohammed,Hanafy, Sherif M.,Al-Shuhail, Abdullatif,et al. Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia[J],2020,12(3).
APA	Benaafi, Mohammed,Hanafy, Sherif M.,Al-Shuhail, Abdullatif,El-Husseiny, Ammar,&Dvorkin, Jack.(2020).Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia.WATER,12(3).
MLA	Benaafi, Mohammed,et al."Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia".WATER 12.3(2020).