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Shrinking lake basins in the proximity of the Indus Suture Zone of northwestern Himalaya: A case study of Tso Kar and Startsapuk Tso, using 1RS-1C data

Abstract The study of active tectonics in Himalaya is important as this helps to understand the style of evolutionary process of this gigantic mountain system in more specific terms. The formation of lakes, regarded as the crown stage development of an orogenic belt, is an impressive geomorphic feature that adorns the Himalayan belt end to end. Tso Kar and Startsapuk Tso are the two ancient lakes that lie south of the Indus Suture Zone in the northwestern Himalaya. An attempt has been made to map the former extent of these lakes, using remote sensing techniques, for providing vital clues in elucidating the paleoenvironmental conditions under which these water bodies were developed. It is observed that the dimension of these lakes has constantly fluctuated in time due to ongoing compression in the collision regime and possible climatic influences that have been recorded on a large scale globally. An added advantage of this study has been to evaluate the high spatial resolution data of the Indian Remote Sensing Satellite (IRS-1C) for geomorphological, lithological and structural inferences in the arid, inaccessible and complex terrain like the northwestern Trans Himalaya.