干旱区生态环境知识资源中心(Arid): Variation in hydraulic structure with respect to depth and age of a large igneous province in Ethiopia

Arid

DOI	10.1007/s10040-023-02749-9
	Variation in hydraulic structure with respect to depth and age of a large igneous province in Ethiopia
	Shube, Hassen; Kebede, Seifu
通讯作者	Shube, H
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2024
卷号	32 期号:1 页码:97-108
英文摘要	Depth-wise variation in hydraulic structures of volcanic aquifers is rarely investigated when compared to basement and other rocks. A comprehensive dataset is presented here on the hydraulic properties of volcanic aquifers from a large igneous province in Africa. Age- and depth-wise variation in transmissivity (T), yield (Q), hydraulic conductivity (K) and specific capacity (S-c) of volcanic aquifers and water wells were systematically examined for stratigraphic units of various ages (Eocene to Quaternary Period) and well depth (18-882 m). The T ranges from 0.02 to 9,830 m(2)/day. There is a good correlation between the age of the emplacement of the rocks and their hydraulic properties. The oldest (Eocene) basalts show lower productivity (T, K and Q) when compared to the youngest (Quaternary) basalts. There is no statistically significant depth-wise variation of T, K and Q when one single formation is investigated. The insights gained from the analysis show that increasing the depth of drilling does not necessarily increase aquifer yields and can inform global-scale groundwater modelling efforts. The data challenge the widely held assumption that K and Q decrease with depth. Unlike basement rocks, volcanic rocks show no statistically significant change in hydraulic properties along its depth profile to the depth of 900 m.
英文关键词	Volcanic aquifers Age Drilling depth Productivity Arid regions Ethiopia
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001114779400004
WOS关键词	PUMPING TESTS ; BLUE NILE ; GROUNDWATER ; BASALTS ; BASIN ; CRYSTALLINE ; AQUIFERS ; PERMEABILITY ; FRAMEWORK ; FLOOD
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404084
推荐引用方式 GB/T 7714	Shube, Hassen,Kebede, Seifu. Variation in hydraulic structure with respect to depth and age of a large igneous province in Ethiopia[J],2024,32(1):97-108.
APA	Shube, Hassen,&Kebede, Seifu.(2024).Variation in hydraulic structure with respect to depth and age of a large igneous province in Ethiopia.HYDROGEOLOGY JOURNAL,32(1),97-108.
MLA	Shube, Hassen,et al."Variation in hydraulic structure with respect to depth and age of a large igneous province in Ethiopia".HYDROGEOLOGY JOURNAL 32.1(2024):97-108.