Thermomechanical Waves in the Elastic Lithosphere–Viscous Asthenosphere System

— The problem of the development of thermomechanical waves in the system consisting of two horizontal layers with rheology of a linearly elastic medium for the upper layer (lithosphere) and a viscous fluid for the lower layer (asthenosphere) is considered with regard to phase transition on their com...

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Bibliographic Details
Published in:Fluid dynamics 2021-11, Vol.56 (6), p.765-779
Main Authors: Lobkovsky, L. I., Ramazanov, M. M.
Format: Article
Language:English
Subjects:
Asthenosphere
Classical and Continuum Physics
Classical Mechanics
Elastic media
Engineering Fluid Dynamics
Exact solutions
Fluid- and Aerodynamics
Lithosphere
Parameters
Phase transitions
Physical properties
Physics
Physics and Astronomy
Rheological properties
Rheology
Tectonics
Tectonics (Geology)
Viscous fluids
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Summary:— The problem of the development of thermomechanical waves in the system consisting of two horizontal layers with rheology of a linearly elastic medium for the upper layer (lithosphere) and a viscous fluid for the lower layer (asthenosphere) is considered with regard to phase transition on their common boundary. The exact solution to the problem is found and its properties as functions of the parameters are studied. It is shown that for the characteristic physical parameters of the lithosphere and asthenosphere there exist solutions in the form of moderately damped strain tectonic waves and a geophysical interpretation of the results obtained is given.
ISSN:0015-4628
1573-8507
DOI:10.1134/S0015462821060100