Peculiar Characteristics of Fragmentation of Glaciers: A Case Study of Western Himalaya, India

Abstract

The areal extent of many Himalayan glaciers is decreasing where number of glaciers is increasing. This increasing number is subject to the fragmentation of limbs of main trunk glacier. However, disintegration of limbs is not observed in all the glacier system. This paper emphases the scenario of the fragmentation occurred in glaciers. Two glaciers from the two different basins have been taken into the consideration for this study. The peculiar characteristic of these glaciers is that, the tributary glaciers are showing less retreat in compare to main trunk glaciers. Due to this reason the rate of shift in snout is higher in main trunk glaciers than tributary glaciers. However, in recent data the tributary glaciers have experienced little higher loss in glacial ice than main glacier. But the shift of snout in main trunk glacier is no doubt surprising since past. Therefore, various parameters have been examined to identify the cause of such a behavior of glaciers. The common factors observed in both the glaciers are accumulation area ratio which is higher, snow line altitude which is lower in tributary glaciers for the period of 2005-2013. Another factor is the orientation as tributary glaciers are towards NE direction. In addition, slope of Dharlang glacier (main limb) is 4˚ where it is 18˚ in tributary glacier.

Evolution and Controls of Large Glacial Lakes in the Nepal Himalaya

“…Furthermore, along with this climate change variability, local orographic influences ought to be shifting as well, so the local changes in climate might not always track the regional and global average shifts. The subregional and local climate change variability coupled with differing glacier response timescales means that regionally across the Himalaya-Karakoram we ought to see heterogeneous glacier responses from one valley to another and between nearby glaciers, and we do [11,14,16,17,110,111]. It is thus not a given that glacial lake growth and behavioral dynamics will all be the same, as reflected by differing glacial lake growth patterns.…”

Recession and Morphological Changes of the Debris-Covered Milam Glacier in Gori Ganga Valley, Central Himalaya, India, Derived From Satellite Data

“…glaciers in Nepal Himalaya increased from 3430 to 5163 between 1980 and 2010 due to the same process. The glaciers detachment has been also observed in the Chenab basin, western Himalaya (Brahmbhatt et al, 2015).…”