Sediment accumulation rate in the lakes of Kumaun Himalaya,India using210Pb and226Ra |
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| Authors: | B K Das M Singh M D Borkar |
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| Institution: | (1) Centre of Advanced Study in Geology Panjab University, 160014 Chandigarh, India;(2) Health Physics Division BARC, 400085 Bombay, India |
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| Abstract: | The rate of sedimentation and the source of sediments in the lake basins of Nainital region, Kumaun Himalaya, have been estimated employing210Pb and210Ra methods. This has yielded a rate of sedimentation of 11.5, 4.70, 3.72, and 3.00 mm/yr in Nainital, Bhimtal, Naukuchiyatal, and Sattal lakes, respectively. The higher rate of sedimentation in Nainital lake, compared to other lakes, is related to faster erosion in the catchment aided by greater anthropogenic activity, while the slowest rate in Sattal lake is due to less erosion and more input of soil-derived material involving a slow rate of accumulation. |
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| Keywords: | Sediment accumulation rate Lead-210 Radon-226 Nainital region Anthropogenic Kumaun Himalaya |
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