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Cross comparison of five popular groundwater pollution vulnerability index approaches

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Title Cross comparison of five popular groundwater pollution vulnerability index approaches
 
Creator Brindha, Karthikeyan
Elango, L.
 
Description Identification of a suitable overlay and index method to map vulnerable zones for pollution in weathered rock aquifers was carried out in this study. DRASTIC and four models derived from it, namely Pesticide DRASTIC, modified DRASTIC, modified Pesticide DRASTIC and Susceptibility Index (SI) were compared by applying them to a weathered rock aquifer in southern India. The results were validated with the measured geochemical data. This study also introduces the use of temporal variation in the groundwater level and nitrate concentration in groundwater as input and for validation respectively to obtain more reliable and meaningful results. Sensitivity analysis of the vulnerability index maps highlight the importance of one parameter over another for a given hydrogeological setting, which will help to plan the field investigations based on the most or the least influential parameter. It is recommended to use modified Pesticide DRASTIC for weathered rock regions with irrigation practises and shallow aquifers (
 
Date 2016-11-01T13:39:43Z
2016-11-01T13:39:43Z
2015
 
Type Journal Article
 
Identifier Brindha, Karthikeyan; Elango, L. 2015. Cross comparison of five popular groundwater pollution vulnerability index approaches. Journal of Hydrology, 524:597-613. doi: http://dx.doi.org/10.1016/j.jhydrol.2015.03.003
https://hdl.handle.net/10568/77518
 
Language en