Geophysical Delineation of Freshwater–Saline Water Interfaces in Coastal Area of Southwest Bangladesh
نویسندگان
چکیده
Insufficiency of potable water is acute in southwest (SW) coastal areas Bangladesh. The local population ignores the depth to saltwater/freshwater interface causing many unsuccessful waters wells drilling. In this context, a combined use borehole logs, geophysical well vertical electrical soundings (VES), resistivity tomography (ERT) and conductivity (EC) sampled was performed identify depths part. study shows that freshwater/saltwater varies from place occurring commonly between 190 285 m, locally as shallow 146 m. greatly influenced by upconing fresh deep aquifer (DA) near major rivers coast compared landward part mixed with more saline above. Vertically infiltrated saltwater main cause brackish upper (USA), which hydraulically connected lower (LSA), not directly recharged Bay Bengal south. will contribute find out potential freshwater assess vulnerability area SW
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ژورنال
عنوان ژورنال: Water
سال: 2021
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w13182527