ネパール・ランタンヒマールにおける2015年ゴルカ地震を契機とした一連の雪崩・岩屑雪崩災害  [in Japanese] A series of huge avalanches and rock avalanches induced by Gurkha Earthquake and aftershocks in Langtang Himal in 2015  [in Japanese]

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Abstract

2015年ネパール・ゴルカ地震にともなってランタン・リルン主稜部で発生した雪崩は,U字谷谷底のランタン集落を埋積するとともに爆風を発生させ周辺集落や森林をなぎ倒した.その後,衛星画像判読,ヘリコプターによる空中からの観察そして現地調査を行った.その結果,ランタンリルン南西面では4月25日の本震以降大規模な雪崩と岩屑雪崩が繰り返し発生していることが明らかとなった.将来的にさらにそれらが継続的に発生することが懸念される.

Catastrophic avalanches occurred in Langtang Himal triggered by Nepal Gurkha Earthquake in 2015 of which scale was Mw 7.8. Rock avalanches of almost 1 million cubic meters occurred about one month after the main shock, comparing satellite images and oblique aerial photographs taken on 4th, 24th, 25th, and on 28th May. However, the detritus on the hanging glacier was covered by avalanches and was partly swept away by the avalanches on 1st June. The hanging glacier was again covered by rock avalanches in the middle November. It suggests that collapse of the wall and glacier have continued after the earthquake.

Journal

  • Proceedings of the General Meeting of the Association of Japanese Geographers

    Proceedings of the General Meeting of the Association of Japanese Geographers 2016a(0), 100143, 2016

    The Association of Japanese Geographers

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