TY - JOUR
AU1 - Fedorov, A. V.
AU2 - Fedorov, I. S.
AU3 - Voronin, A. I.
AU4 - Asming, V. E.
AB - In the winter months of 2018–2020, the Kola Branch of the Federal Research Center Geophysical Survey of the Russian Academy of Sciences (FRC GS RAS) carried out experiments on recording acoustic signals from triggered snow avalanches using infrasonic sensors. The purpose of the experiments was to assess the possibility of recording avalanches by the infrasound method in difficult Arctic conditions. To record the acoustic signals generated by movement of the snow mass along the slope, arrays of three spaced sensors (microphones or microbarographs) were used. At the first stage, a wired system based on a Baikal-8 digitizer was used. The experience of using a wired recording system revealed its main disadvantages due to the complexity of operational deployment of long wired lines and controlling their safety. To reduce the time spent on deploying the acoustic avalanche detection system and to improve the reliability and safety of the equipment, a wireless version of the infrasonic array was developed for temporary observations. The wireless system for recording infrasonic signals consists of three modular radio microphones, each of which includes the necessary functional blocks, arranged in a single housing, and transmits data via radio to a signal receiver—a base module that contains a controller that transmits received radio data from modular radio microphones into a computer for data collection and processing. This wireless mobile infrasound array was tested in several experiments on recording signals from triggered snow avalanches. As a result, infrasonic signal records were obtained at various distances from the avalanche; conclusions were drawn about the applicability of the infrasonic method and the performance characteristics of the selected scheme and equipment layout for recording the facts of avalanches. The results will eventually make it possible to develop and create a permanent infrasonic complex for monitoring avalanche activity in the Khibiny mountain range.
TI - Mobile Infrasound Avalanche Monitoring System: General Design Principle and Application of Results
JF - Seismic Instruments
DO - 10.3103/s0747923921040058
DA - 2021-07-25
UR - https://www.deepdyve.com/lp/springer-journals/mobile-infrasound-avalanche-monitoring-system-general-design-principle-cXY03JmGfZ
SP - 369
EP - 375
VL - 57
IS - 4
DP - DeepDyve
ER -