Seismic properties of the Mohorovicic discontinuity

The use of the deep seismic sounding (DSS) technique in studying properties of deep-seated seismic interfaces is discussed along with the frequency spectrum of waves generated at the M discontinuity. Properties of deep-seated seismic boundaries in western Uzbekistan and characteristic features of waves from the Mohorovicic discontinuity in the ocean and the transition zone are also described. Other topics included are: DSS studies of deep faults; earth's crust and upper mantle in the zone near eastern Kamchatka; experience in recording shear and converted waves produced at intracrustal interfaces; absolute levels of seismic wave amplitudes in the 1 to 50 Hz frequency range; and use of dynamic features of seismic waves for characterizing crustal models.