FIELD: prospecting seismology, in particular, acoustic survey of water-covered areas, possible use for predicting possible appearance of tsunami and for determining epicenter of same.
SUBSTANCE: atmospheric pressure oscillations are recorded by a group of atmospheric pressure oscillation receivers at a distance from tsunami source not less than 5 tsunami wave lengths in 0,001-0,5 Hz frequency range. Signals, recorded by two adjacent receivers of first couple, positioned at fixed distance from each other, are multiplied. Then voltage of frequencies if determined, thus recording the mutually correlating function. Delay time of one of signals is changed until appearance of maximum value of mutually correlating function. Maximum value of mutually correlating function is maintained. Value of first azimuth of tsunami epicenter is determined. Analogically to usage of two adjacent receivers of second pair, value of second azimuth of tsunami epicenter is determined. Values of first and second azimuths are converted to digital codes, and digital message is formed from these codes. High frequency oscillation is generated and phase-manipulated using digital message, creating a complex phase-manipulated signal. Power of aforementioned signal is amplified, and it is emitted into ether. Signal is received at control station and its frequency is transformed. Complex signal with phase manipulation is singled out at intermediate frequency and multiplied by supporting voltage. Low frequency voltage, proportional to digital message, is selected and multiplied by complex phase-manipulated signal at intermediate frequency. Harmonic voltage is singled out, which is used as supporting voltage. Low frequency voltage is recorded, analysis of which results in detection of tsunami epicenter.
EFFECT: increased trustworthiness when determining probability of tsunami appearance.
2 dwg
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