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Piezometric Head

Threat of land subsidence in and around Kolkata City and East Kolkata Wetlands – A paper in Journal of Earth System Science

This paper in Journal of Earth System Science attempts to estimate the possible rate of land subsidence of Kolkata City including Salt Lake City and the adjoining East Kolkata Wetlands located at the lower part of the deltaic alluvial plain of South Bengal basin. Land subsidence is an environmental hazard which is caused by overdraft of groundwater or oil extraction and results in gradual settling or sudden sinking of the earth’s surface owing to subsurface movement of the materials of the earth. 

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Threat of land subsidence in and around Kolkata City and East Kolkata Wetlands – A paper in Journal of Earth System Science (2011) 844.6 KB

Location

Kolkata, WB, India
Latitude: 22.572646, Longitude: 88.363895

Stream aquifer interaction in a multi-layered system – A research report by National Institute of Hydrology

In the present report a mathematical model has been developed for the study of stream aquifer interaction in multilayered system viz. a three-aquifer system, in which aquifers are separated by aquitards, considering varying stream-stage and vertical flow through aquitards. The model enables the computation of rates of recharge to the upper aquifer and exchanges of flow among aquifers along with the spatial and temporal distributions of piezometric heads in the aquifers.Read More

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Stream aquifer interaction in multi-layered system by NIH (1997-98)505.42 KB
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