**8. Conclusion**

We selected five OSC areas in intracontinental interblock zones, in which the most intensive seismic events can take place. The OSC areas with maximal seismic activity divide the Altai Block and NEP, Hangay and Sayany blocks,

Amurian Block and NEP within republic's Altai, Tuva, Buryat, Irkutsk District and Mongolia. Volumes of releasing seismic energy reach in them 107−12J, earthquakes with M4–6 are frequent, some infrequent events have M up to 7–9. The seismicity intensity is a little weaker within OSC areas dividing the Amurian Block and NEP in Transbaikalia Krai, Amurian District, Mongolia, and northeast China, as well as Japanese and Okhotsk blocks in Sakhalin, where seismic energy volumes reach 106−10J, earthquakes with M5–7 are frequent, infrequent events have M up to 8.

We excluded from our analysis continental margin zones, dividing Japanese-Korean and North Japan, Kuril-Kamchatka and Okhotsk blocks because they situate in connection with west Pacific subduction zones as distinguished from investigated above intracontinental OSC areas. These continental margin zones represent subjects of the special investigation and partly were examined in some earlier papers of Yu. Gatinsky and G. Vladova [33, 34].
