Impact of Vertical Geological Structure and Water Table Depletion on Indian Crystalline Aquifers
| Autor: | Boisson, Alexandre, Maréchal, Jean-Christophe, Perrin, Jérôme, Guiheneuf, N, Dewandel, Benoît, Ahmed, S. |
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| Přispěvatelé: | Indo-French Center for Groundwater Research (IFCGR), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-National Geophysical Research Institute [Hyderabad] (NGRI), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Géosciences Rennes (GR), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Hydrology
geography Hydrogeology geography.geographical_feature_category Groundwater flow Water table Water storage India Aquifer Groundwater recharge Crystalline aquifer Groundwater management Water quality [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology Water resource management Irrigation Groundwater Geology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Engineering Geology for Society and Territory Engineering Geology for Society and Territory, 3, Springer International Publishing, pp.583-587, 2015 Engineering Geology for Society and Territory-Volume 3 ISBN: 9783319090535 Engineering Geology for Society and Territory, 3, Springer International Publishing, pp.583-587, 2015, ⟨10.1007/978-3-319-09054-2_117⟩ |
| DOI: | 10.1007/978-3-319-09054-2_117⟩ |
| Popis: | International audience; Book coverEngineering Geology for Society and Territory - Volume 3 pp 583–587Cite asImpact of Vertical Geological Structure and Water Table Depletion on Indian Crystalline AquifersA. Boisson, J. C. Maréchal, J. Perrin, B. Dewandel & S. Ahmed Conference paperFirst Online: 22 August 20141806 AccessesAbstractIndia is the first country in the world for groundwater exploitation. The large global pumping rate has induced in numerous regions a strong water table depletion and various over-exploitation situations especially in crystalline aquifer areas. Long time monitoring as well as various specific research projects have been conducted on three sites: Maheshwaram, Gajwel and EHP Choutuppal located in Andhra Pradesh India. They allow a comprehensive inventory of the situation and predicting the impacts of the growing pressure on Indian aquifers. Studies show that in crystalline rocks the hydrodynamics is controlled by the weathering profile: groundwater flow dominantly occurs in a shallow higher-permeability zone that overlies a deeper lower-permeability zone hosting little flow. Continuously decreasing water levels produce drastic changes for groundwater management especially when geological structures lead to water level thresholds. Impact is visible on water availability which may not sustain current agriculture practices and create more inequity between farmers regarding water accessibility. Concerning water quality, impacts are also important with a trend to enhance salinization and fluoride release in the aquifer. Moreover this depletion of water table will reduce the adaptation capacity and consequently, solutions like managed aquifer recharge will become less efficient due to enhanced water storage in the unsaturated zone. Finally, energy demand should rise to compensate lower yields and larger water lift. |
| Databáze: | OpenAIRE |
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