Open AccessReconstruction of seismotectonic deformations of Asia in different layers of the Earth’s crust
Author(s) -
O. A. Kuchay
Publication year - 2022
Publication title -
geofizičeskie tehnologii
Language(s) - English
Resource type - Journals
ISSN - 2619-1563
DOI - 10.18303/2619-1563-2021-2-4
Subject(s) - geology , seismology , crust , orientation (vector space) , consistency (knowledge bases) , geodesy , elongation , central asia , focal mechanism , strain (injury) , tectonics , geophysics , geometry , geography , physical geography , ultimate tensile strength , mathematics , materials science , metallurgy , medicine
The calculation of seismotectonic deformations for different depth levels 1–15, 16–35, 36–70 km was performed according to the data of 1819 mechanisms of earthquake foci that occurred in Central Asia (φ = 25° – 60° N, λ=60° – 115° E) for the period from 1976 to the end of July 2020 with M>4.7. The orientation of the main axes of the strain tensor reconstructed from the mechanisms of earthquake foci with M>4.7 coincide at different depth levels with mainly submeridional and north-eastern shortening and varying elongation from sublatitude to north-western and near-vertical. The consistency of the orientation of the main axes of shortening and elongation reconstructed from seismological materials and from the published results of calculating GPS observations, is traced.