Item: A study of an avalanche at niseko, japan
Title: A study of an avalanche at niseko, japan
Proceedings: Proceedings of the 1998 International Snow Science Workshop, Sunriver, Oregon
Authors: A. Hachikubo, J. McElwaine, M. Nemoto, T. Kaihara, T. Yamada and K. Nishimura
Abstract: On 28th January 1998 an avalanche accident occurred near the Japanese ski resort Niseko Alpen in Hokkaido. The snow properties of the crown surface was investigated. A weak layer composed of faceted crystals was found at a depth of 1m at the release point. Meteorological data at the observation site (1 km distant) suggested that they developed on 19th January. We conclude that the passage of a low pressure front rapidly cooled the snow surface and the induced large temperature gradient near the surface caused development of the faceted crystals.
Keywords: avalanche accidents, weak layer, faceted crystals
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