Modern displacements measurements at Talay station (south-west part of Baikal rift)

Abstract

The rates of modern displacements are an important factor in the modern geodynamics of the Baikal rift system. Reflection of strong earthquakes in the experimental values of displacements is still to be discussed, as well as the question of modern vertical movements. According to the measurements of 1992–2022, performed by the methods of absolute gravimetry and space geodesy, the velocities of vertical and horizontal movements at the Talaya seismic station (Baikal Rift). The displacement rates were determined as 1.7 mm/year – 1.9 mm/year at the SEE relative to the Irkutsk point (Siberian platform). A set of methods was used to obtain the vertical velocity val-ues for different epochs, pre-, co- and post-period of Kultuk earthquake (2008, M = 6.3, 25 km to the epicenter). Subsidence rates vary from 1.1 mm/yr to 3.3 mm/yr. Possible signs of the preparation of Baikal earthquakes have been identified.