METHOD FOR PREDICTING TSUNAMIS Russian patent published in 2009 - IPC G01V9/00 

FIELD: seismology.

SUBSTANCE: invention relates to the field of seismology and can be used for predicting tsunamis. Seismic signals are registered from earthquakes by seismographs, located in the peaks of equilateral triangles on bed rock. They determine the time the seismic signals were caused, the distance using triangulation. They measure the speed of the longitudinal and diametric waves in the volume of rock in the disposition of the triangle. The read the seismic signals from the earthquake. They measure the time of the delay. They determine using the two minimum times of the delay the azimuthal angles between the norm to the front of the seismic wave, occurring through the centre of the triangle, the epicenter of the earthquake, and the given initiating point of the report. The precise location of the epicenter of the earthquake, the magnitude of the temporal delay for the horizontal plain (surface of the earth), the angle of the location of the focus, the distance, the focus, the distance to the epicenter, the depth of the focus are calculated. At the seismic monitoring station with the aid of a computer the maximum magnitude of the observed underwater earthquake is calculated in microns or seismograms. The magnitude (M) is then calculated according to the Richter scale using a nomograph. If M≥7 then the conclusion is that a tsunami is possible. To confirm the accuracy of the information a check is carried out on the presence of tsunami waves with the help of information received by radio from a device for determining tsunami waves, located in the ocean in the proximity of contact between the lithosphere plates or the break in the earth's core. Furthermore, information is taken and analysed about the wave's movements from the surface to the seabed at a speed of 700-900 km/hour. The force of wave pressure is taken into account. The height of the tsunami wave is taken into account on its approach to the shore line. The time of the approach of the tsunami to the shoreline is calculated and the population informed.

EFFECT: increased responsiveness and accuracy in determining tsunamis.

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