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Snout Fluctuation Study of Chhota Shigri Glacier Lahaul and Spiti District, Himachal Pradesh
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The snout fluctuation of Chhota Shigri Glacier has been examined for the period of 1962 to 1989. This period can be characterised as one of general retreat. The morainic levels at different positions and altitudes show the past extension of the glacier, eventhough then is no documented record of past advance and retreat of the glacier. But on the basis of the different morainic deposits the nature of past extension and deglaciation history of the glacier can be inferred. There are six such morainic levels recognised in the field. On the basis of these deposits the total retreat of glacier is calculated as about 2.5 km. since its break from the main Chandra Valley glacier, The present fluctuation study (1 962- 1989) shows that the glacier has been almost retreating expect in 1987 when it advanced about 17.5m. The totd recession of glacier during the period of 26 years was about 195m with an average rate of 7.5m/yr.
Keywords
Glacier, Moraine, Geomorphology, Himachal Pradesh.
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