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Last update: RNDr. Pavel Zakouřil, Ph.D. (21.06.2004)
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Last update: T_KG (02.04.2008)
The aim of the lecture course is an introduction to problems of seismic wave propagation in real anisotropic structures and to modern methods of studying seismic anisotropy observed in geological structures. The course should extend knowledge in properties of seismic waves in complex structures needed in modern applications to studying the Earth's structure and the earthquake source. |
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Last update: prof. RNDr. František Gallovič, Ph.D. (06.10.2017)
Podmínkou udělení zápočtu je aktivní účast na cvičeních. Povaha kontroly studia předmětu vylučuje opravné termíny zápočtu. Získání zápočtu je podmínkou pro konání zkoušky. |
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Last update: RNDr. Pavel Zakouřil, Ph.D. (21.06.2004)
Červený,V., 2001. Seismic Ray Theory, Cambridge University Press, Cambridge. Červený,V., Molotkov,I.A. & Pšenčík,I., 1977. Ray Method in Seismology, Charles University Press, Praha. Fedorov, F.I., 1968. Theory of elastic waves in crystals. Plenum Press, New York. Musgrave, M.J.P., 1970. Crystal Acoustics, Holden-Day, San Francisco. Babuška, V. & Cara, M., 1991. Seismic Anisotropy in the Earth, Kluwer, Dordrecht. Savage, M.K., Seismic anisotropy and mantle deformation: What have we learned from shear wave splitting?, Rev. Geophysics, 37, 65-106, 1999. |
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Last update: T_KG (11.04.2008)
Lecture |
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Last update: prof. RNDr. František Gallovič, Ph.D. (06.10.2017)
Zkouška je ústní, požadavky odpovídají sylabu v rozsahu prezentovaném na přednášce. |
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Last update: RNDr. Pavel Zakouřil, Ph.D. (21.06.2004)
Transverse isotropy Cubic anisotropy Tetragonal and trigonal symmetry Orthorhombic and monoclinic symmetry Triclinic anisotropy Weak and strong anisotropy Plane wave in homogeneous anisotropic media Christoffel tensor, Christoffel equation Phase and group velocities Slowness surface, wave-front Parabolic line, caustics, anti-caustics, triplication of the wave-front Acoustic axes, number of acoustic axes for various anisotropy symmetries, determination of acoustic axes, caustics in the vicinity of the acoustic axes Energy of seismic waves, energy flux, energy conservation law Reflection/transmission coefficients at planar interfaces Anisotropic Green function Integral form of the Green function Properties of waves in near- and far-field zones Asymptotic Green function in regular and singular directions Green function for isotropic and anisotropic media: differences Seismic sources in anisotropic media Force equivalent of seismic sources Seismic moment tensor and its decomposition Physical interpretation of non-DC components of the moment tensor Influence of anisotropy on the moment tensor
Methods of studying seismic anisotropy Anisotropy versus inhomogeneity Theoretical models of anisotropy, effective anisotropy of layered and cracked media Seismic tomography Interpretation of refraction measurements Shear-wave splitting analysis Anisotropy from surface waves Anisotropy determined from moment tensors Anisotropy in the Earth Anisotropy of rock-forming minerals and polycrystalline aggregates Oceanic and continental crust Upper and lower mantle Subduction zones Inner core |