Application of Geospatial Techniques for Monitoring the Cryospheric Elements of Glacier System in Indian Himalayan Region (IHR)

Tiwari, Ashutosh; Kumar, Kireet; Patley, Manoj; Sharma, Jyoti

doi:10.1007/978-3-030-67932-3_1

Water, Cryosphere, and Climate Change in the Himalayas

2021

DOI: 10.1007/978-3-030-67932-3_1

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Application of Geospatial Techniques for Monitoring the Cryospheric Elements of Glacier System in Indian Himalayan Region (IHR)

Ashutosh Tiwari

Kireet Kumar

Manoj Patley

et al.

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2024

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Cited by 1 publication

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Susceptibility Assessment of Moraine-Dammed Glacial Lakes in the Eastern Himalaya: A Geospatial Approach

Pohal,

Sharma,

Baisantry

2024

Preprint

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The glaciers in the Himalayan region are some of the fastest retreating glaciers in the world with an annual rate of retreat of 16–35 m/yr. leading to creation of a large number of glacial lakes in the Himalaya. The global warming has contributed to the continuing expansion of the glacial lakes. These topographic depressions, confined by ice, bedrock, moraine, or a combination of these, accumulate the melt water annually, and often the poor structural integrity of moraine dam fails to withstand the pressure exerted by the volume of accumulated water, leading to occurrence of a glacial lake outburst flood (GLOF). Since, GLOFs are mostly an instantaneous phenomenon and have the potential to cause severe damage to the property and loss of lives, a comprehensive analysis of GLOFs is necessary. The present study focuses on Sikkim and Arunachal Pradesh (Indian Eastern Himalaya) to create an inventory of glacial lakes with area > 0.01 km2 and assess their hazard potential. 340 and 1529 lakes in Sikkim and Arunachal Himalaya were manually identified from the 50 cm high resolution combined product of Worldview-8 and Geo-Eye true Ortho-rectified Satellite Imageries, out of which 27 in Sikkim and 6 in Arunachal Himalaya were identified as moraine dammed lakes. A detailed inventory of these lakes in GIS environment incorporated 14 parameters including 11 crucial controls on outburst susceptibility using AHP. The susceptibility map is classified into 4 classes, namely very high (4 lakes), high (12 lakes), medium (13 lakes) and low (4 lakes). Validation of the susceptibility classes was validated with 3 known GLOF events from the Himalaya. This novel study highlights the need to monitor and assess possible GLOFs in future while providing a high precision base inventory to open further research in this direction.

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Susceptibility Assessment of Moraine-Dammed Glacial Lakes in the Eastern Himalaya: A Geospatial Approach

Pohal,

Sharma,

Baisantry

2024

Preprint

View full text Add to dashboard Cite

show abstract

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Application of Geospatial Techniques for Monitoring the Cryospheric Elements of Glacier System in Indian Himalayan Region (IHR)

Cited by 1 publication

References 18 publications

Susceptibility Assessment of Moraine-Dammed Glacial Lakes in the Eastern Himalaya: A Geospatial Approach

Susceptibility Assessment of Moraine-Dammed Glacial Lakes in the Eastern Himalaya: A Geospatial Approach

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