Recession of samudra tapu glacier, chandra river basin, Himachal Pradesh |
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| Authors: | Anil V Kulkarni Sunil Dhar B P Rathore Babu Govindha Raj K Rajeev Kalia |
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| Institution: | (1) Faculty of Science, Department of Physical Geography and Geoecology, Charles University in Prague, Prague, Czech Republic;(2) GIMPULS Prague, Prague, Czech Republic;(3) Government Institute of Geology and Mineral Resources, Bishkek, Kyrgyz Republic |
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| Abstract: | Himalayas possess one of the largest resources of snow, ice and glaciers that act as a huge freshwater reservoir. Monitoring
the glaciers is important to assess the overall reservoir health of the Himalayas. Samudra Tapu is one of the largest glaciers
in Chandra basin of district Lahaul and Spiti, Himachal Pradesh. Based on the field investigations and the remote sensing
techniques. features such as accumulation area, ablation area snowline/equilibrium line, moraine-dammed lakes and permanent
snowfields were mapped. The glacial terminus was identified using moraine-dammed lake, as lake is located at down streamside
of the terminus. The total recession of glacier during the period of 38 years (1962–2000) is about 742 m with an average rate
of 19.5 m/yr. In addition, glacial extent is reduced from 73 to 65 km2 between 1962 and 2000. suggesting overall deglaciation of 11%. During field investigation. three stages of glaciation using
terminal moraine were identified. These moraines were mapped by merging LISS-II1 and PAN data. At the peak of glaciation.
the glacial terminus was extended 3.18 km downstream of terminus position in year 2000. Total area during peak of glaciation
period has been observed to be 77.67 km2, which is 12.67 km2 higher than the present glacier extent. |
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