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- Title
Experience of Modeling the Seismotectonic Flow of the Earth's Crust in Central Asia.
- Authors
Atabekov, I. U.
- Abstract
Abstract—Tectonic flow of crustal rock masses (a creep flow) in Central Asia is numerically modeled using the Stokes equations within a region limited by 36° and 46° N, 56° and 76° E. In the study, tectonic and seismotectonic flow of a rock mass is understood as a strain rate and its variation induced by an earthquake. The focal mechanism of an earthquake is modeled in two ways: by a lumped internal moment and by a double couple with no net torque. Three-dimensional continuum equations are averaged over the lithosphere's thickness with the use of the properties of the geodynamic statement of the problem. The right-hand sides of the averaged creep flow equations contain tectonic stresses and present-day topography as the initial data. For their determination, the inverse problem of elasticity is solved. The possible boundary conditions providing the formation of the present-day surface topography of Central Asia by the interaction between the Indian, Arabian and Eurasian plates are sought. The obtained numerical results fairly well agree with the real GPS data.
- Subjects
CENTRAL Asia; EARTHFLOWS; STOKES flow; CRUST of the earth; CREEP (Materials); SURFACE topography; INVERSE problems
- Publication
Izvestiya, Physics of the Solid Earth, 2021, Vol 57, Issue 1, p110
- ISSN
1069-3513
- Publication type
Article
- DOI
10.1134/S1069351321010018