Reliable Estimation of Avalanche Activity Using Seismic Methods

摘要: In order to improve natural avalanches forecast, MeteoFrance has developed an operational system for automatic, quasi real-time estimation of the avalanche activity. It is based on detection seismic signal associated with avalanches. Avalanches represent only about 10% recorded signals, all others being unwelcome signals that must be eliminated. This task requires a complete analysis signal. We have (named SARA) which uses time-frequency and fuzzy logic recognize signals. The average success rate our 90%. results provided by SARA are compared other parameters related proves able follow evolution activity in almost real time. Concrete applications, such as surveillance prone zones, considered.