- RAS - Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation
- RAS - United Schmidt Institute of Physics of the Earth
Research output: Contribution to journal › Article › peer-review
The equations of the propagation of weak non-linear waves are obtained by a detailed analysis of the gradient-consistent micropolar model of a granular continuous medium. The high-frequency mode of oscillation is associated with ultrasonic waves, and the low-frequency mode is associated with the usual seismic waves in rocks. The evolution equations that include the case of long-wave-short-wave resonance are obtained by an asymptotic consideration. This resonance corresponds to the case of the generation of ultrasound (noise) by travelling seismic waves.