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Seismic Signals Associated with Avalanches

  • William ST. Lawrence (a1) and Thomas R. Williams (a1)
Abstract

A seismic survey was conducted during the winter of 1974 75 to determine the extent to which signals from avalanches can be detected using standard seismic techniques. The results of this investigation show that signals associated with avalanching snow-packs have characteristic patterns which differentiate them from signals of extraneous origin. The records of several of these signals are presented and discussed.

Résumé

On a conduit pendant l'hiver 1974-75 une campagne d'observation sismique pour déterminer jusqu'à quel point on peut détecter des signaux émis par des avalanches avec les méthodes. sismiques classiques. Les résultats de ces recherches montrent que les signaux associés aux avalanches ont des caractéristiques propres qui les distinguent de ceux d'origine externe. Les enregistrements de plusieurs de ces signaux sont présentés et discutés.

Zusammenfassung

Zur Bestimmung des Ausmasses, in dem Signale von Lawinen mit normalen seismischen Verfahren entdeckt werden können, wurde im Winter 1974/75 ein seismisches Programm durchgeführt. Die Ergebnisse dieser Untersuchung zeigen, dass Signale, die von abgehenden Schneemassen herrühren, charakteristische Muster aufweisen, die sie von Signalen andren Ursprungs unterscheiden. Die Aufzeichnungen einiger dieser Signale werden vorgelegt und diskutiert.

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Copyright
References
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Ives, J.D. 1973 Development of methodology for evaluation and prediction of avalanche hazard in the San Juan mountain area of southwestern Colorado. Interim report for period August 1972–August 1973 [by] Ives, J.D.,Harrison, J.C.,Armstrong, R.L. Boulder, Colorado. Institute of Arctic and Alpine Research. (INSTAAR–14–06–7155–2.)
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Journal of Glaciology
  • ISSN: 0022-1430
  • EISSN: 1727-5652
  • URL: /core/journals/journal-of-glaciology
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