MICROSEISMIC ZONING METHOD Russian patent published in 2011 - IPC G01V1/00 G01V11/00 

FIELD: physics.

SUBSTANCE: analysis and reference observation points are placed on areas with different geological engineering conditions. Seismic vibrations from earthquakes from potentially dangerous and other focal zones are picked up at said observation points. Dynamic parameters of seismic vibrations and their variations on each of the investigated observation points relative references in a given frequency range are determined. Further, three-component detection of seismic vibrations is carried out on profile network which is orthogonal and directed on the potentially dangerous focal zones. Ocean-bottom seismographs with broadband 0.003-20 Hz seismic channels are also placed on the continental slope and shelf along foot of the continental slope. Said seismographs are used to record tsunami wave pressure at the bottom at frequencies of 0.003-0.01 Hz. The picked up signals are transmitted over a hydroacoustic communication channel to reference points. At places where the ocean-bottom seismographs are installed, time variations of the geomagnetic field are also determined by measuring parameters of the gravitational and magnetic fields.

EFFECT: broader functionalities.

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