干旱区生态环境知识资源中心(Arid): Aquifer Vulnerability Analysis Using the Original and Modified DRASTIC Method on Alluvial Aquifer Zones, Ethiopia

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	Aquifer Vulnerability Analysis Using the Original and Modified DRASTIC Method on Alluvial Aquifer Zones, Ethiopia
	Seifu, Tesema Kebede; Woldesenbet, Tekalegn Ayele; Alemayehu, Taye; Ayenew, Tenalem
通讯作者	Seifu, TK
来源期刊	JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING
ISSN	0255-660X
EISSN	0974-3006
出版年	2024
卷号	52 期号:1 页码:235-249
英文摘要	In the semi-arid area, where climate variability is the main challenge, it is a critical issue to develop effective groundwater resource management. The study planned to investigate groundwater vulnerability by comparing the original and modified DRASTIC models. The DRASTIC approach included seven hydrogeological parameters: depth to water (D), net recharge (R), aquifer media (A), soil media (S), topography (T), the impact of vadose zone (I), and hydraulic conductivity (C). Lineament and LULC were included in the original DRASTIC parameters, and the impact of these parameters was determined using sensitivity analysis. The outcomes of the original and the modified DRASTIC index are between 73-204 and 87-263, respectively. These findings led to the classification of the research area into five categories of hazards: very low, low, moderate, high, and very high. The upper catchment is more vulnerable to groundwater contamination than the lower catchment. The sensitivity analysis shows that the depth and impact of the vadose zone are the main parameters that influence the vulnerability map. This study was validated using data on nitrate concentrations in groundwater from the study area. The study also discovered that nitrate contamination of the groundwater should be due to excessive agricultural application, grazing land, and other microbiological hazards in the northwestern portion. According to the validation outcome, the modified DRASTIC model provides better correlation results (R2 = 0.32) than the original (R2 = 0.25). These results serve as a guide for those who are in charge of making decisions regarding prevention of groundwater pollution in such a sensitive area.
英文关键词	Modified DRASTIC Aquifer vulnerability Sensitivity Nitrate concentration Ethiopia
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001167878000003
WOS类目	Environmental Sciences ; Remote Sensing
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404726
推荐引用方式 GB/T 7714	Seifu, Tesema Kebede,Woldesenbet, Tekalegn Ayele,Alemayehu, Taye,et al. Aquifer Vulnerability Analysis Using the Original and Modified DRASTIC Method on Alluvial Aquifer Zones, Ethiopia[J],2024,52(1):235-249.
APA	Seifu, Tesema Kebede,Woldesenbet, Tekalegn Ayele,Alemayehu, Taye,&Ayenew, Tenalem.(2024).Aquifer Vulnerability Analysis Using the Original and Modified DRASTIC Method on Alluvial Aquifer Zones, Ethiopia.JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING,52(1),235-249.
MLA	Seifu, Tesema Kebede,et al."Aquifer Vulnerability Analysis Using the Original and Modified DRASTIC Method on Alluvial Aquifer Zones, Ethiopia".JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING 52.1(2024):235-249.