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Estimation of ice thickness using surface velocities and slope: case study at Gangotri Glacier, India

Gantayat, Prateek and Kulkarni, Anil V and Srinivasan, J (2014) Estimation of ice thickness using surface velocities and slope: case study at Gangotri Glacier, India. In: JOURNAL OF GLACIOLOGY, 60 (220). pp. 277-282.

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Official URL: http://dx.doi.org/10.3189/2014JoG13J078

Abstract

We estimate the distribution of ice thickness for a Himalayan glacier using surface velocities, slope and the ice flow law. Surface velocities over Gangotri Glacier were estimated using sub-pixel correlation of Landsat TM and ETM+ imagery. Velocities range from similar to 14-85 m a(-1) in the accumulation region to similar to 20-30 ma(-1) near the snout. Depth profiles were calculated using the equation of laminar flow. Thickness varies from similar to 540 m in the upper reaches to similar to 50-60 m near the snout. The volume of the glacier is estimated to be 23.2 +/- 4.2 km(3).

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the INT GLACIOL SOC, LENSFIELD RD, CAMBRIDGE CB2 1ER, ENGLAND
Keywords: glacial rheology; glacier flow; glacier modelling; remote sensing
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Depositing User: Id for Latest eprints
Date Deposited: 24 Jun 2014 09:10
Last Modified: 24 Jun 2014 09:10
URI: http://eprints.iisc.ac.in/id/eprint/49334

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