Počet záznamů: 1

First-order reflection/transmission coefficients for unconverted plane P waves in weakly anisotropic media

  1. 1.
    0348409 - GFU-E 2011 RIV GB eng J - Článek v odborném periodiku
    Farra, V. - Pšenčík, Ivan
    First-order reflection/transmission coefficients for unconverted plane P waves in weakly anisotropic media.
    Geophysical Journal International. Roč. 183, č. 3 (2010), s. 1443-1454 ISSN 0956-540X
    Grant CEP: GA ČR GA205/08/0332
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: body waves * seismic anisotropy * wave propagation
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
    Impakt faktor: 2.411, rok: 2010

    We present approximate formulae for the plane-wave displacement reflection/transmission (R/T) coefficients for interfaces of arbitrary contrast, separating two homogeneous, weakly anisotropic media. They result from boundary conditions requiring continuity of displacement vector and traction, in which coupled S waves are considered as a single S wave and exact quantities are replaced by first-order quantities used in first-order ray tracing. Specifically, the phase velocities, slowness and polarization vectors of P and coupled S waves appearing in the boundary conditions are of the first-order with respect to the deviations of anisotropy from isotropy. Application of the derived R/T coefficients transforms the amplitude of an incident P wave into amplitudes of reflected/transmitted P or coupled S waves.
    Trvalý link: http://hdl.handle.net/11104/0188956