Reflection and transmission properties of elastic waves on a plane interface for general anisotropic media

1991 ◽  
Vol 90 (2) ◽  
pp. 1106-1118 ◽  
Author(s):  
Batakrishna Mandal
Keyword(s):  
Elastic Waves ◽  
Anisotropic Media ◽  
Plane Interface ◽  
Reflection And Transmission ◽  
Transmission Properties

Elastic waves in periodically layered infinite and semi-infinite anisotropic media

1987 ◽  
Vol 185 (1-2) ◽  
pp. A243 ◽  
Author(s):  
A. Nougaoui ◽  
B.Djafari Rouhani
Keyword(s):  
Elastic Waves ◽  
Anisotropic Media

Extension of forward modeling phase-screen code in isotropic and anisotropic media up to critical angle

Geophysics ◽  
2007 ◽  
Vol 72 (5) ◽  
pp. SM107-SM114 ◽  
Author(s):  
James C. White ◽  
Richard W. Hobbs
Keyword(s):  
Critical Angle ◽  
Model Space ◽  
Anisotropic Media ◽  
Forward Modeling ◽  
Phase Screen ◽  
Computationally Efficient ◽  
Reflection And Transmission ◽  
Transmission Coefficients ◽  
Phase Corrections ◽  
Converted Phases

The computationally efficient phase-screen forward modeling technique is extended to allow investigation of nonnormal raypaths. The code is developed to accommodate all diffracted and converted phases up to critical angle, building on a geometric construction method. The new approach relies upon prescanning the model space to assess the complexity of each screen. The propagating wavefields are then divided as a function of horizontal wavenumber, and each subset is transformed to the spatial domain separately, carrying with it angular information. This allows both locally accurate 3D phase corrections and Zoeppritz reflection and transmission coefficients to be applied. The phase-screen code is further developed to handle simple anisotropic media. During phase-screen modeling, propagation is undertaken in the wavenumber domain where exact expressions for anisotropic phase velocities are available. Traveltimes and amplitude effects from a range of anisotropic shales are computed and compared with previous published results.

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