METHOD OF DETERMINING PROBABILITY OF CATASTROPHIC PHENOMENA Russian patent published in 2012 - IPC G01V11/00 

FIELD: physics.

SUBSTANCE: geophysical field parameters are continuously measured in the monitored area. Measured parameter variations are detected by detecting sinusoidal oscillations of increasing frequency, having amplitude significantly different from the background for the monitored area. Detection of said sinusoidal oscillations determines possible onset of a catastrophic phenomenon. Rayleigh and Stoneley surface waves are detected on land in the coastal area. The onset of a catastrophic phenomenon is determined from the acceleration power spectra for the vertical component of the microseism, picked up from the Rayleigh and Stoneley waves, specifically: periods of calm state and periods of a microseismic storm are compared.

EFFECT: high reliability of detecting approaching catastrophic phenomenon.