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Discussion papers
https://doi.org/10.5194/essd-2019-201
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2019-201
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: data description paper 15 Nov 2019

Submitted as: data description paper | 15 Nov 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).

Glacier terminus retreat, mass budget, and surface velocity measurements for the Jankar Chhu Watershed, Lahaul Himalaya, India

Suresh Das and Milap Chand Sharma Suresh Das and Milap Chand Sharma
  • Centre for the Study of Regional Development (CSRD), Jawaharlal Nehru University, New Delhi 110067, India

Abstract. Characterization of glacier changes in the terminus, elevation, and surface velocity was worked out for the Jankar Chhu Watershed (JCW) of Lahaul Himalaya using freely available satellite remote sensing data and the limited number of field observations. We studied changes using Corona (1971), Landsat (1993–2017), Sentinel 2A (2016), the SRTM Digital Elevation Model (DEM; 2000), and the global TanDEM‒X DEM (2014). Change detection for nine select glaciers was studied in detail. Our results showed that changes in glacier terminus (−4.7 ± 0.4 m a−1) between 1971 and 2016 are smaller than previously reported. An intricate pattern of mass changes across the JCW was observed, with surface lowering on an average of −0.7 ± 0.4 m a−1 which equates to a geodetic mass balance of −0.6 ± 0.4 m w.e. a−1 during 2000–14. The computed glacier surface velocities (1993‒2017) reveal nearly stagnant debris-covered ablation zone but the dynamically active main trunk. Field observations/measurements also support the findings. This study provides valuable insights into the recent glacier variations, which are of critical importance to assess the future glacier dynamics on a regional scale in areas like the present one. The dataset is freely accessible at http://doi.org/10.5281/zenodo.3383233 (Das and Sharma, 2019b).

Suresh Das and Milap Chand Sharma
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Suresh Das and Milap Chand Sharma
Data sets

Datasets on multiparameter glacier change dynamics for the Jankar Chhu Watershed, Lahaul Himalaya, India S. Das and M. C. Sharma https://doi.org/10.5281/zenodo.3383233

Suresh Das and Milap Chand Sharma
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Short summary
This study presents multi-temporal and multiparameter glacier change measurements between 1971 and 2016 for the Jankar Chhu Watershed (JCW), Lahaul Himalaya, India, based on satellite remote sensing data and the limited number of field observations. Present findings suggest a much lower retreat rate than previously reported. This study offers a valuable dataset on recent glacier variations, which are of critical importance to assess the future glacier dynamics on a regional scale.
This study presents multi-temporal and multiparameter glacier change measurements between 1971...
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