A 3-D model of the velocity field is constructed from P and S waves on the basis of seismic evidence for local earthquake that occurred in 1996 in the area of the Karymskii Volcanic Center on Kamchatka. The velocity field calculated for an area of 50 x 40 km at depths of 0-70 km is nonuniform and significantly varies with area, depth, and time. We relate the inferred regular patterns to specific features of the structure and state of the medium and to variations in the volcanic and seismic activities. For the first time, an attempt is made to reveal significant distinctions in the velocity fields during different periods of volcanic and seismic processes.
|Number of pages||11|
|Journal||Izvestiya, Physics of the Solid Earth|
|Publication status||Published - Jul 2004|