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Groundwater exploration in limestone–shale–quartzite terrain through 2D electrical resistivity tomography in Tadipatri, Anantapur district, Andhra Pradesh

Kumar, Dewashish ; Rajesh, Karri ; Mondal, Setbandhu ; Warsi, Taufique ; Rangarajan, R

Journal of Earth System Science, 2020-12, Vol.129 (1), p.71, Article 71 [Periódico revisado por pares]

New Delhi: Springer India

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Groundwater exploration in limestone–shale–quartzite terrain through 2D electrical resistivity tomography in Tadipatri, Anantapur district, Andhra Pradesh
Autor: Kumar, Dewashish ; Rajesh, Karri ; Mondal, Setbandhu ; Warsi, Taufique ; Rangarajan, R
Assuntos: Aquifer characteristics ; Aquifer systems ; Aquifers ; Boreholes ; Coefficient of variation ; Data interpretation ; Earth and Environmental Science ; Earth Sciences ; Electrical resistivity ; Fault zones ; Geology ; Geophysical data ; Groundwater ; Hydrology ; Limestone ; Lithology ; Parameter estimation ; Pumping ; Pumping tests ; Quartzite ; Rainfall ; Sedimentary rocks ; Shale ; Shales ; Space Exploration and Astronautics ; Space Sciences (including Extraterrestrial Physics ; Storage coefficient ; Terrain ; Tomography ; Transmissivity ; Water conservation ; Water shortages ; Water supply
É parte de: Journal of Earth System Science, 2020-12, Vol.129 (1), p.71, Article 71
Descrição: Two-Dimensional (2D) Electrical Resistivity Tomography (ERT) survey was carried out at 11 sites within an area of 10 km 2 to delineate deeper potential groundwater zones in a complex geological terrain underlain by quartzite, shale and limestone formations with varied resistivity characteristics. The area is in medium rainfall zone in Tadipatri mandal of Anantapur district, Andhra Pradesh state, India. The investigation was carried out to meet the growing demands of water supply. Interpretation of the high-density 2D resistivity dataset results revealed potential zones at only three sites in Tummalapenta, Ayyavaripalle and Guruvanipalle villages within the depth zone of 24–124 m. A major fault zone oriented in EW direction is mapped at Tummalapenta site. Based on high resolution geophysical data interpretation and significant anomalies, four boreholes were drilled in complex, viz., limestone, shale and quartzite formations up to a maximum depth of 192 m in the area with the yield ranging from 300 to ~5000 liter per hour (lph). These four anomalous drilled borehole sites corroborates with the aquifer zone delineated through ERT technique. The aquifer parameters estimated from pumping tests show that the transmissivity varies between ~0.3 and 179.5 m 2 /day while the storage coefficient ranges from 0.137 to 0.5 indicating large variation in aquifer characteristics of the system in a smaller area. Suitable water conservation measures were suggested for improving the groundwater condition and yield of the pumping wells.
Editor: New Delhi: Springer India
Idioma: Inglês

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Groundwater exploration in limestone–shale–quartzite terrain through 2D electrical resistivity tomography in Tadipatri, Anantapur district, Andhra Pradesh

Kumar, Dewashish ; Rajesh, Karri ; Mondal, Setbandhu ; Warsi, Taufique ; Rangarajan, R

New Delhi: Springer India

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