Design of Network to Monitor Infrasound from Thunderstorm Events: Development of Sensor

Dmitriy Kudin,Evgeniy Uchaikin,Nikolay Kudryavtsev,W.J Miloch,B.M Shevtsov,G.M Vodinchar

doi:10.1051/e3sconf/20186201005

Abstract

This paper describes the implementation of the autonomous infrasonic sensor for thunderstorm events recognition. Original hardware – microcontroller system with microphones, GPS-based time synchronization and GPRS-modem data transmission is described. The characteristics as calibration results is reviewed.

Highlights

Along with the study of large-scale planetary phenomena, such as earth magnetic field variations, alterations in solar activity, its influence on atmospheric electric circuit, and others, geophysicists take interest in so-called single large energy events [1, 2]
The studies of infrasonic waves have shown [3, 4, 5] that the overwhelming majority of the large-energy events named supra and even the events of considerably smaller magnitude are accompanied by strong fluctuations in air masses in a range of 0.1 to 2.5 Hz
This means that monitoring of the sub-herz range of infrasonic waves makes it possible to observe and localize such phenomena

Summary

Introduction

Along with the study of large-scale planetary phenomena, such as earth magnetic field variations, alterations in solar activity, its influence on atmospheric electric circuit, and others, geophysicists take interest in so-called single large energy events [1, 2]. Even if some minor earthquakes and induced explosions are detected and localized by the networks of seismic stations, it is still a rather problematic task to determine the coordinates of the other aforementioned events in a real time environment. The decay coefficient for such waves is considerably higher than for sound waves of a sub-herz range This is connected to the scattering effect of sound waves of a relatively small length on the obstacles of a terrestrial landscape which leads to a rather fast loss of their amplitude depending on distance. For a detailed study of such infrasonic waves, it is enough to place an inexpensive temporary portable local monitoring network in the region that is of interest to the observer which would have a considerably smaller point-to-point distance in comparison with standard measuring networks and would be equipped with rather cheap (sensitive enough, but more narrow-band) measuring equipment

Design and construction

Calibration

CONCLUSION