Refraction Seismic Investigation at Zemu Glacier, Sikkim

Refraction seismic studies conducted on the Zemu Glacier in Sikkim at an altitude of 4 570 m (15 000 ft), indicate that the thickness of the glacier ice varies from about 125 m at the edge of the glacier to about 300 m at the centre. The bedrock section across the glacial valley as drawn on the basi...

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Bibliographic Details
Published in:Journal of Glaciology
Main Authors: Bose, R.N., Dutta, N.P., Lahiri, S.M.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1971
Subjects:
Online Access:http://dx.doi.org/10.1017/s0022143000013046
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000013046
Description
Summary:Refraction seismic studies conducted on the Zemu Glacier in Sikkim at an altitude of 4 570 m (15 000 ft), indicate that the thickness of the glacier ice varies from about 125 m at the edge of the glacier to about 300 m at the centre. The bedrock section across the glacial valley as drawn on the basis of the seismic data corroborates the fact that the glacier has undergone considerable lateral shrinkage. The observed seismic velocity in the glacier ice, which ranges between 3 500 m/s and 3 700 m/s is in good agreement with the values obtained on glaciers in various parts of the world.