KEYWORDS: Signal analyzers, Wavelets, Wavelet transforms, Signal detection, Acoustics, Signal generators, Protactinium, Atmospheric physics, Chemical analysis, Physics
The paper presents the results of the wavelet analysis of infrasound signals from ground-based low-power explosions. It was found that in most cases, the spectral structure of the infrasound signal has the character of a monotonic decrease of the oscillation period. For these types of signals from the explosion with the power tab order of 0.01 × 10-3 kT at a distance of up to 300 km infrasound signal spectral structure has the character of a linear decrease of the period of pressure fluctuations from time to time according to the law T = Т0 - B × t, where the most probable values of the initial period Т0 take values from 0.97 and index decreasing in the period - 0.25.
The article describes the results of studies of infrasound pressure oscillations in the frequency range from 0.0001 to 10 Hz in the suburban area. In this frequency range are analyzed changes infrasonic pressure oscillations infrasonic background in the suburban area. Showing daily and seasonal changes in the infrasound pressure oscillation parameters.
The technique of map development of noise of the city on spectral characteristics of acoustic noise is offered. Cards of acoustic noise in the sound range of frequencies for the winter and summer season, and also the card of spatial distribution of a decay rate according to measurements in Tomsk are constructed. Empirical dependence of level of acoustic noise on transport loading for the winter and summer period is received.
The possibility of the estimation of ground explosions energy using infrasound monitoring data for 100-300 km distances is discussed. Infrasonic signals energy from ground explosions is estimated using different methods.
The possibility of the estimation of ground explosions energy using infrasound monitoring data for 100-300 km distances is discussed. Infrasonic signals energy from ground explosions is estimated using different methods.
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