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Book Chapter

Depth profiling and recessional history of the Hamtah and Parang glaciers in Lahaul and Spiti, Himachal Pradesh, Indian Himalaya

By
A. K. Swain
A. K. Swain
Geological Survey of India, Polar Studies Division, Faridabad, IndiaPresent address: Geological Survey of India, Gangtok, Sikkim, India
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M. A. Mukhtar
M. A. Mukhtar
Geological Survey of India, Srinagar, Jammu and Kashmir, India
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Z. Majeed
Z. Majeed
Geological Survey of India, Srinagar, Jammu and Kashmir, India
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S. P. Shukla
S. P. Shukla
Geological Survey of India, Glaciology Division, Lucknow, India
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Published:
January 01, 2018

Abstract

The Himalaya are often referred to as the third pole of the Earth because they host the largest areal extent of glaciation outside the polar regions. Estimating the volume of these glaciers is challenging because the ice thickness of most of the glaciers is not accurately known. Depth profiling of the north-facing Hamtah and Parang glaciers was carried out using ground-penetrating radar surveys. The 6 km long Hamtah glacier and the 2.5 km long Parang glacier, with average widths of 350 and 250 m, respectively, are located in different U-shaped valleys. The depth of the ice–bedrock interface varied from 35 to 95 m in the Hamtah glacier and from 40 to 140 m in the Parang glacier. The valley profiles and ground-penetrating radar data were combined to obtain the volumes of the glaciers. The total volumes of ice in the Parang and Hamtah glaciers were estimated to be 0.179 and 0.375 km3, respectively. Shape analyses of different parts of these glaciers suggest that mathematical equations can be used to describe their sequential development. The retreat rates of the Parang and Hamtah glaciers were estimated to be 11.04 and 16.10 m a−1, respectively.

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Contents

Geological Society, London, Special Publications

The Himalayan Cryosphere: Past and Present

N.C. Pant
N.C. Pant
University of Delhi, India
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R. Ravindra
R. Ravindra
National Centre for Antarctic and Ocean Research, India
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D. Srivastava
D. Srivastava
Geological Survey of India, India
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L.G. Thompson
L.G. Thompson
The Ohio State University, USA
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The Geological Society of London
Volume
462
ISBN electronic:
9781786203434
Publication date:
January 01, 2018

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