ALMOND-F is an innovative unit for the microseismic detection of debris flows using a network of geophones.
The microseismic detection of debris flows is more complex than other types of monitoring. Use of the geophones requires: (1) the selection of the level of amplification of the signal, which depends on the distance from the stream; (2) the selection of the sampling frequency of the seismic signal, which must be sufficiently high; (3) the processing of the seismic signal; and (4) the determination of the frequency of the vibrations induced in the ground by the moving debris flow.
ALMOND-F offers a response to these requirements, and allows changing easily the parameters required for detection of the debris flow.
ALMOND-F samples the signal with a high frequency (128 Hz), and may use a different level of amplification for each geophone, to better adapt the installation to site characteristics. ALMOND-F processes the seismic signal processing, and features a number of alarm algorithms based on parameters calculated automatically by the station and that the user can change via software.
ALMOND-F allows for the implementation of new algorithms. This makes ALMOND-F an ideal tool for testing new algorithms for the detection and warning of debris flows.
