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<p>We present here a study of the diverse regimes and behaviour of the glaciers from a single source with varied aspects and geometries. We have analyzed the terminus recession pattern and frontal area loss of five glaciers descending on various aspects from the Menthosa peak (Himachal Himalaya). All five studied glaciers show the recession of terminuses during the study periods, though with an erratic pattern of recession rates. The largest glacier among all, i.e., the Harruin glacier, is retreating at an overall annual rate of 8.13±0.21 ma<sup>–1</sup> since 1921, with a maximum retreat rate of 10.01±0.36 ma<sup>-1</sup> between 1971 and 2000 and a minimum rate of 5.78±0.55 ma<sup>–1</sup> during the most recent phase, i.e., 2013–2021. On the contrary, Menthosa and the Churput glaciers show the fastest retreat rates of 20.65±1.55 and 13.54±1.55 ma<sup>–1</sup>, respectively, during the most recent phase (2013–2021). Contrastingly, the Zambu and the Chasak glaciers show the fastest annual retreat rates during the 2000–2013 period (23.77±0.9 and 9.3±0.9 ma<sup>–1</sup>, respectively). We analyzed the climate data for the last century, however, no micro-climatic data was available. Therefore, climatic trends apply to all the glaciers. Therefore, we attribute the disparate glacier recession pattern to the variations in the topographic factors, mainly glacier hypsometry and valley geometry.</p>

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Disparate hypsometry and consequential recession pattern variations of the glaciers originating from a single source in the Himachal Himalaya, India

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Sanjay Deswal,
  • Satya Prakash,
  • Elora Chakraborty,
  • Milap Chand Sharma,
  • Rakesh Saini,
  • Parvendra Kumar,
  • Padma Dalal,
  • Pawan Kumar

摘要

We present here a study of the diverse regimes and behaviour of the glaciers from a single source with varied aspects and geometries. We have analyzed the terminus recession pattern and frontal area loss of five glaciers descending on various aspects from the Menthosa peak (Himachal Himalaya). All five studied glaciers show the recession of terminuses during the study periods, though with an erratic pattern of recession rates. The largest glacier among all, i.e., the Harruin glacier, is retreating at an overall annual rate of 8.13±0.21 ma–1 since 1921, with a maximum retreat rate of 10.01±0.36 ma-1 between 1971 and 2000 and a minimum rate of 5.78±0.55 ma–1 during the most recent phase, i.e., 2013–2021. On the contrary, Menthosa and the Churput glaciers show the fastest retreat rates of 20.65±1.55 and 13.54±1.55 ma–1, respectively, during the most recent phase (2013–2021). Contrastingly, the Zambu and the Chasak glaciers show the fastest annual retreat rates during the 2000–2013 period (23.77±0.9 and 9.3±0.9 ma–1, respectively). We analyzed the climate data for the last century, however, no micro-climatic data was available. Therefore, climatic trends apply to all the glaciers. Therefore, we attribute the disparate glacier recession pattern to the variations in the topographic factors, mainly glacier hypsometry and valley geometry.