G. M. Steblov

• Institute of Earthquake Forecast Theory and Mathematical Geophysics of RAS

Grigory Steblov – Professor of the Russian Academy of Sciences, Doctor of Physical and Mathematical Sciences, specializing in geophysics and geophysical methods of mineral exploration. He developed and applied new approaches to the study of modern movements of the lithosphere using satellite geodetic methods, which constituted the general concept of geodynamic studies of various scales from the global to the regional level. On a global scale, deviations of the movements of lithospheric plates, obtained from space geodesy data, from models constructed earlier using geological and geophysical data averaged over the last 3 million years have been identified. The results of these studies were: refinement of the model of modern global kinematics of lithospheric plates; assessment of the rigidity limits of the largest lithospheric plates, including the Eurasian one; identification and clarification of the configuration of interplate boundaries in the northeastern part of Asia and the northwestern part of the Pacific Ocean. On a regional scale, the possibility of solving inverse problems that arise during the geodynamic interpretation of geodetic observations in tectonically active regions has been investigated and established. The approaches found made it possible to simulate interplate deformation processes, in particular, for the region of the Kuril-Kamchatka subduction zone at various stages of the seismic cycle, as well as to clarify the rheology of the asthenosphere in this region and in other regions with similar structures. A number of results is also related to the identification of the effects of strong earthquakes, including tsunamigenic ones, on the ionosphere.

Research interests: studies of multi-scale geodynamic processes based on satellite geodesy, seismology, spatiotemporal patterns of tectonic deformations in focal zones of the strongest earthquakes at different stages of the seismic cycle, interplate and intraplate deformations of the lithosphere, glacioisostasis.