Item: The Influence of Seismic Effect on Avalanche Release
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Title: The Influence of Seismic Effect on Avalanche Release
Proceedings: Proceedings of the 2000 International Snow Science Workshop, October 1-6, Big Sky, Montana
Authors:
- Evgueni Mokrov [ Center of Avalanche Safety of ]
- Pavel Chernouss [ Center of Avalanche Safety of ]
- Yuri Fedorenko [ )lnstitute of Ecology, Kola Science Centre of Russian Academy of Science, Fersmana St., 14, Apatity, Murmansk Region, 184200 Russia ] [ )'nstitute Solid Earth Physics, University of Bergen, Allegaten 41, N-5007 Bergen, Norway ]
- Eystein Husebye [ )'nstitute Solid Earth Physics, University of Bergen, Allegaten 41, N-5007 Bergen, Norway ]
Date: 2000
Abstract: The mines in the Khibiny Mountains produce many chemical explosions, which occasionally are tied to explosive charges exceeding 100 tons. Such explosions have the potential of a sudden avalanche releases in avalanche prone valleys in the Khibiny. It is known that a ground of shaking earthquakes have triggered avalanches although this phenomenon has been neither quantified nor well documented yet. In 1999 a joint project to study the influences of seismic loading an avalanche release was initiated by the Center of Avalanche Safety of 'Apatit" JSC, Kola Science Center, Russian Academy of Science and the University of Bergen. Studies of archive data on avalanche releases for twenty years show that the distribution of avalanche occurrences over day of weeks are sharply non-uniform as confirmed by chi-square statistical test. The shape of these distributions is very similar to those of explosions. The attempts to study the explosions influence an avalanche release by statistical methods are described. In order to monitor the seismic events a seismic station (Nansen Kola Seismic Station) was installed at the snow and avalanche field stations on the top of the mountain plateau in a distance of a few kilometers from main places of explosions. It is planned to use some portable stations for the measurements on avalanche dangerous slopes. The program of the future studies is presented.
Language of Article: English
Presenters: Unknown
Keywords: avalanche release, seismic effect, chemical explosions, seismic station
Page Number(s): 338-341
Subjects: seismic effect avalanche release seismic station
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Digital Abstract Not Available
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