Experimental study of the self-action of seismoacoustic waves

Results of held experiments on the self-action of seismoacoustic waves exci ted in the ground as a result of the transformation of a sound wave generat ed in water by a hydroacoustic transducer are presented. The effect is caus ed by the odd-type nonlinearity of the medium and manifests itself as the d ependence of the wave velocity on the wave amplitude. To explain the observ ed dependences, a nonlinear equation of state of the medium and its rheolog ical model are proposed, and their possible relation to the medium structur e is discussed. The obtained results may be of interest for the development of new methods of rock monitoring.