On the complementariness of infrasound and seismic sensors for monitoring snow avalanches
On the complementariness of infrasound and seismic sensors for monitoring snow avalanches
复制标题
DOI：
10.5194/nhess-11-2355-2011
复制
发表时间：
2011-01-01
影响因子：
4.6
通讯作者：
Dufour, F.
中科院分区：
文献类型：
--
作者：
Kogelnig, A.;Surinach, E.;Dufour, F.
本文分析和比较了2009年至2010年在瑞士Vallee de la Sionne试验场监测到的雪崩次声和地震数据。使用地震和次声传感器的组合，不仅可以探测雪崩，而且可以区分不同的流动状态，并分析持续时间、平均速度（雪崩路径的部分）和雪崩规模。不同的灵敏度的地震和次声传感器的雪崩制度。此外，在次声信号中观察到的一个雪崩的高振幅进行建模，假设雪崩的悬浮层作为一个移动的湍流声源。我们的研究结果表明，相同的雪崩路径上的类似雪崩的再现性。
The paper analyses and compares infrasonic and seismic data from snow avalanches monitored at the Vallee 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.