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Relative effect of slope and equilibrium line altitude on the retreat of Himalayan glaciers

Venkatesh, TN and Kulkarni, AV and Srinivasan, J (2012) Relative effect of slope and equilibrium line altitude on the retreat of Himalayan glaciers. In: CRYOSPHERE, 6 (2). pp. 301-311.

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Official URL: http://dx.doi.org/10.5194/tc-6-301-2012

Abstract

It has been observed that a majority of glaciers in the Himalayas have been retreating. In this paper, we show that there are two major factors which control the advance/retreat of the Himalayan glaciers. They are the slope of the glacier and changes in the equilibrium line altitude. While it is well known, that these factors are important, we propose a new way of combining them and use it to predict retreat. The functional form of this model has been derived from numerical simulations using an ice-flow code. The model has been successfully applied to the movement of eight Himalayan glaciers during the past 25 years. It explains why the Gangotri glacier is retreating while Zemu of nearly the same length is stationary, even if they are subject to similar environmental changes. The model has also been applied to a larger set of glaciers in the Parbati basin, for which retreat based on satellite data is available, though over a shorter time period.

Item Type: Journal Article
Department/Centre: Division of Earth and Environmental Sciences > Divecha Centre for Climate Change
Date Deposited: 25 Jun 2012 12:28
Last Modified: 25 Jun 2012 12:28
URI: http://eprints.iisc.ernet.in/id/eprint/44710

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