Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/27327
Title: On the complementariness of infrasound and seismic sensors for monitoring snow avalanches
Author: Kogelnig, Arnold
Suriñach Cornet, Emma
Vilajosana Guillén, Ignasi
Hübl, Johannes
Sovilla, B.
Hiller, M.
Dufour, F.
Keywords: Allaus
Sismologia
Prospecció sísmica
Avalanches
Seismology
Seismic prospecting
Issue Date: 26-Aug-2011
Publisher: European Geosciences Union
Abstract: 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.
Note: Reproducció del document publicat a: http://dx.doi.org/10.5194/nhess-11-2355-2011
It is part of: Natural Hazards and Earth System Sciences, 2011, Vol. 11, p. 2355-2370
Related resource: http://dx.doi.org/10.5194/nhess-11-2355-2011
URI: http://hdl.handle.net/2445/27327
ISSN: 1561-8633
Appears in Collections:Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)

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