Preliminary Observations of Acoustic Emissions Preceding Avalanches

Abstract Spontaneous emissions of noise were monitored in a snowpack on an avalanche track using three geophones. 30 Hz noise was recorded on magnetic tape for the whole avalanche season and 3 Hz noise for a short period of time. Periods before and during avalanches were associated with high noise,...

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Bibliographic Details
Published in:Journal of Glaciology
Main Author: Sommerfeld, Richard A.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1977
Subjects:
Online Access:http://dx.doi.org/10.1017/s0022143000029427
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000029427
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Summary:Abstract Spontaneous emissions of noise were monitored in a snowpack on an avalanche track using three geophones. 30 Hz noise was recorded on magnetic tape for the whole avalanche season and 3 Hz noise for a short period of time. Periods before and during avalanches were associated with high noise, while periods of known stability were associated with low noise.