PHASE-AMPLITUDE MODULATION OF A SEISMOACOUSTIC WAVE UNDER MOON-SUN TIDES

Abstract

The effect of diurnal tides observed during a field experiment investigating the phase-amplitude modulation of a seismoacoustic P wave that propagated in porous oil- and gas-saturated sandstone is explained in terms of dissipative and reactive nonlinearity of rocks. The parameters of this nonlinearity at the observation site are predicted from comparison of theoretical and field estimates.