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| Titel |
On the complementariness of infrasound and seismic sensors for monitoring snow avalanches |
| VerfasserIn |
A. Kogelnig, E. Suriñach, I. Vilajosana, J. Hübl, B. Sovilla, M. Hiller, F. Dufour |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 8 ; Nr. 11, no. 8 (2011-08-26), S.2355-2370 |
| Datensatznummer |
250009633
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| Publikation (Nr.) |
 copernicus.org/nhess-11-2355-2011.pdf |
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| Zusammenfassung |
| The paper analyses and compares infrasonic and seismic data from snow
avalanches monitored at the Vallée de la Sionne test site in Switzerland
from 2009 to 2010. Using a combination of seismic and infrasound sensors, it
is possible not only to detect a snow avalanche but also to distinguish
between the different flow regimes and to analyse duration, average speed
(for sections of the avalanche path) and avalanche size. Different
sensitiveness of the seismic and infrasound sensors to the avalanche regimes
is shown. Furthermore, the high amplitudes observed in the infrasound signal
for one avalanche were modelled assuming that the suspension layer of the
avalanche acts as a moving turbulent sound source. Our results show
reproducibility for similar avalanches on the same avalanche path. |
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