Snow Crystal Observations at Mt. Yalung Kang, Kangchenjunga Region, East Nepal

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  • Snow Crystal Observations at Mt Yalung
  • Glaciological Expedition of Nepal, Contribution No. 51

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The shape and size of snow crystals were recorded by making plastic replicas of them during the snowfall on April 23 and May 17, 1973, at Camp II (6470 m) along the climbing route to the summit of Mt. Yalung Kang (8505 m). It was found by observation of the photomicrographs of replicas that the shapes of snow crystals at 1705 NST, April 23, were hexagonal plates, crystals with broad branches, ordinary dendritic crystals and others, and that the time variation of crystals shapes during the period from 1000 NST to 1110 NST, May 17, was from plates to ordinary dendritic crystals through crystals with broad branches. In both cases, the altitudes of the tops of the precipitating clouds and the thickness of the cloud layer suitable for formation of snow crystals were estimated on the basis of experiments on artificial snow crystals.

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