Catchment scale volume and mass changes for glaciers in the Parvati basin of Western Himalaya during 2000�2015

Srinivasalu, P and Kulkarni, AV and Srinivas, VV and Satheesh, SK (2024) Catchment scale volume and mass changes for glaciers in the Parvati basin of Western Himalaya during 2000�2015. In: Environmental Earth Sciences, 83 (7).

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Abstract

The Himalayan cryosphere comprises a large concentration of glaciers that feed numerous perennial rivers, providing food and water security to millions of people living in the downstream regions. To understand the effect of changing climate on these glaciers, an assessment of the mass loss in the glacier is crucial. In this study, the volume of 279 glaciers in the Parvati basin of the Himalaya in the year 2000 was estimated as 21.3 ± 3.8 km3 using the Laminar flow and scaling methods. The regional mass loss of the glaciers over the period 2000�2015 was calculated using the Improved Accumulation Area Ratio (IAAR) and Geodetic methods. The IAAR method�s estimate was based on meteorological data, whereas the geodetic method�s assessment was based on Cartosat-1 satellite data for three years (2011, 2014, 2015) and SRTM DEM for 2000. The mean elevation difference based on the aforementioned DEMs was � 4.6 ± 0.26 m, whereas the mass loss for the glaciers was 14 in the Parvati basin between 2000 and 2015. The mass balance of the glaciers in the basin is estimated as � 0.44 ± 0.23 m w.e.a�1 and � 0.30 ± 0.23 m w.e.a�1, using the IAAR and Geodetic methods, respectively. These methods provide synergetic means to analyze the basin-wide mass changes of glaciers over multiple (annual and long-term) temporal scales. The volume of ice stored in the glaciers of the Parvati basin and their mass changes are quantified at a regional scale to help understand their spatial heterogeneity over those timescales. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

Item Type:	Journal Article
Publication:	Environmental Earth Sciences
Publisher:	Springer Science and Business Media Deutschland GmbH
Additional Information:	The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH.
Keywords:	Geodesy; Laminar flow; Meteorology, Area ratios; Geodetic method; Glacier volume; Himalayas; Improved accumulation area ratio; Mass balance; Mass change; Mass loss; Parvati basin; Western himalayum, Catchments, Cartosat; catchment; climate change; cryosphere; heterogeneity; mass balance; satellite data, Himalayas
Department/Centre:	Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited:	11 Jul 2024 06:54
Last Modified:	11 Jul 2024 06:54
URI:	http://eprints.iisc.ac.in/id/eprint/84807

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