Electrical resistivity investigation of the arsenic affected alluvial aquifers in West Bengal,India: usefulness in identifying the areas of low and high groundwater arsenic |
| |
| Authors: | Bibhash Nath Sukumar Basu Mallik Doris Stüben Debashis Chatterjee Laurent Charlet |
| |
| Institution: | 1.School of Environmental Systems Engineering,The University of Western Australia,Crawley,Australia;2.Department of Geological Sciences,Jadavpur University,Kolkata,India;3.Institute für Mineralogie und Geochemie,Universit?t Karlsruhe,Karlsruhe,Germany;4.Department of Chemistry,University of Kalyani,Nadia,India;5.LGIT-OSUG,Grenoble University,Grenoble Cedex 9,France |
| |
| Abstract: | This study aims at finding out possible relation between lithology and spatial pattern of dissolved arsenic (As) in groundwater
around Chakdaha municipality, West Bengal, India. Satellite image, coupled with electrical resistivity survey and borehole
drilling helps to delineate surface and sub-surface lithological framework of the As affected alluvial aquifers. The satellite
imagery demonstrate that the high As area are presumably under active flood plain environment (low-lying areas), that constantly
receive organics due to periodic flooding. Thick low resistive (fine-grained) layer was observed at the top around the high
As areas, which, however, not found in low As areas. The result suggests that hydraulic properties of the surface/sub-surface
soil/sediment have an important control on the fate and transport of As in the aquifer. This study demonstrates that electrical
resistivity tools can be effectively used for the reconnaissance survey in characterizing the plausible lithological framework
of an alluvial aquifer containing As. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
