ACOUSTIC EFFECTS OF IRANIAN EARTHQUAKE ON JULY 08, 2019

Adushkin V.V., Rybnov Yu. S., Spivak A.A., Kharlamov V.A., Relationship between the parameters of infraThe results of instrumental observations of the acoustic effect caused by stronger earthquake with the magnitude mb = 5.7 which occurred in Iran on July 08, 2019 are given. The observations were carried out at three pointes: the Geophysical observatory "Mikhnevo" (54.94° N; 37.73° E), Center for geophysical monitoring in Moscow (55.70° N; 37.57° E) of Sadovky Institute of Geosphere Dynamics of Russian Academy of Sciences and at a point located in Zvenigorod town, Moscow Region (55.69° N; 36.77° E), which provided the bearing to the source of acoustic signals. It is shown that the earthquake caused atmospheric disturbances in the form of propagating in the stratospheric waveguide acoustic vibrations in infrasonic frequency band which were registered at distances exceeding 2700 km, as well as microbaric variations caused by seismic waves that came to the point of acoustic detection. The characteristic periods of acoustic signals caused by earthquakes are given. The energies of the acoustic source and the earthquake are estimated from the spectral characteristics of the infrasound signal propagating in the stratospheric waveguide.sound waves and the energy of the source, Izvestiya, Physics of the Solid Earth, vol. 55, no. 6, pp. 897-906, 2019.

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