Investigation of Combined Seismic and Geocryologic Conditions for Northern Trans-Baikal

Resumo

A complex combination of permafrost rock masses with different forms of bedding and high seismic activity in regions of Northern Trans-Baikal is examined. The dependence of the geothermal processes in the cryolithozone on the character and activity of tectonic structures is described. The associations of the seismic properties of rock with the physical-mechanical properties and temperature are shown. Rock types with specific engineering-seismic-geocryological features are presented. A classification of magnitude changes compared with the initial values in regions with different types of permafrost rocks as well as a method of seismic microzoning in the cryolithozone taking account of defined predictive elements, obtained by studying the relations of the elastic characteristics of frozen rock to their physical state, temperature, and moisture content, are presented.