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Glacier Surface Flow Velocity of Hunza Basin, Karakoram Using Satellite Optical Data
S. Sivaranjani, , D. Krishnaveni
Published in Springer Science and Business Media Deutschland GmbH
2021
Volume: 1176
   
Pages: 669 - 677
Abstract
High degree of uncertainty about Karakoram glaciers is being reported in literature due to complicated topography and weather. Karakoram glaciers receive their precipitation primarily by westerlies. Glaciers are the real indicators for understanding the impacts of climate change due to global warming. Remote sensing technologies are widely used to study glacier dynamics including estimation of glacier surface flow velocity. The present study focuses on understanding glacier flow dynamics of Hunza basin, Karakoram which consists of surging glaciers. Landsat-8 Operational Land Imager (OLI) Panchromatic data of 15 m resolution have been used to estimate surface flow velocity of glaciers using sub-pixel normalized cross-correlation technique using an open-source software package COSI-CORR(Co-registration of Optically Sensed Images and Correlation) for the Hydrological year 2017–2018. Processed results indicate that surface flow velocity of maximum 120 and 80 m/year has been obtained at basin scale and for Braldu glacier, respectively. The proposed study shows that surface flow velocity is highly dynamic in nature varying from one glacier to another and within the glacier. © 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About the journal
JournalData powered by TypesetAdvances in Intelligent Systems and Computing
PublisherData powered by TypesetSpringer Science and Business Media Deutschland GmbH
ISSN21945357