Affiliation:
1. Centre for Climate Change and Water Research Suresh Gyan Vihar University Jaipur Rajasthan India
2. Water Resources Department Indian Institute of Remote Sensing, ISRO Dehradun Uttarakhand India
3. Department of Geography Hemwati Nandan Bahuguna Garhwal University Srinagar Uttarakhand India
Abstract
AbstractThe glacier database provides an opportunity to track its dynamics and address issues linked with water resources, hazards and sustainability. To better understand the dynamics of Eastern Dhauliganga basin, we mapped the clean and debris‐covered glaciers by using satellite images from Landsat‐series and Sentinel 2. The band‐ratio based methods—NDSI (Normalised Difference Snow Index) and NDVI (Normalised Difference Vegetation Index) were used to map the clean ice glaciers. The debris‐covered glaciers were delineated using topographic parameters and thermal band of Landsat TM. The glacier extent and length change were monitored for 25 glaciers in the basin, of which 13 are clean ice and 12 are debris‐covered glaciers. During the time period from 1994 to 2018, higher area loss was observed for clean ice glaciers (±20.6%) compared with debris‐covered glaciers (±10.9%). The clean‐ice glaciers retreated at a rate of 4.8–33.7 m/year, whereas debris‐covered glaciers retreated at a rate of 2.9–28.8 m/year during 1994–2018.
Subject
Earth-Surface Processes,Geography, Planning and Development
Reference60 articles.
1. Glacial lake outburst flood hazards in Hindukush, Karakoram and Himalayan Ranges of Pakistan: implications and risk analysis
2. Bajracharya S. Mool P.&Shrestha B.(2006)The impact of global warming on the glaciers of the Himalaya.International symposium on geo‐disasters infrastructure management and protection of world heritage sites 25‐26 Nov 2006 Nepal Engineering College Ehime College and National Society for Earthquake Technology Nepal Proceedings 231–242. Availabel from:http://lib.icimod.org/record/12496/files/863.pdf
3. The status and decadal change of glaciers in Bhutan from the 1980s to 2010 based on satellite data
4. Snowmelt runoff modelling and its implications in hydropower potential assessment in Dhauliganga catchment of Pithoragarh District, Uttarakhand;Bhadra B.;Frontier in Earth Science,2015
5. Mapping of debris-covered glaciers in the Garhwal Himalayas using ASTER DEMs and thermal data