Seismicity Migration in the Zone of Convergent Interaction between the Amur Plate and the Eurasian Plate

We present the results of statistical simulation for the seismicity within the zone of interaction among the Amur, Eurasian, and Sea-of-Okhotsk plates where our seismological analysis revealed the Olekma-Stanovoi seismic area, the Tan Lu zone, and the northern Sakhalin-Japan island arc. We discuss the spatial irregularities in the seismicity maxima distribution in annual cycles. It was found that when considered in clusters that are ordered over longitude, the seismicity maxima form long chains of anomalies. It is shown that the mean migration rate of seismicity maxima does not vary throughout the east-west trending Olekma-Stanovoi and the Tukuringra-Dzhagdy seismic zones that travel from the north-south eastern framing of the Amur plate as far as the east-west Tukuringra-Dzhagdy seismic zone. We determined the period of spatial synchronization of seismicity in annual cycles. Considered in the framework of a wave model that is assumed for the dynamics of seismicity, we show that the seismic activity in annual cycles can be initiated due to the modulation of seismicity by an external periodic force loading.