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Geometrical spreading in 3DNormal access

Author: A. Stovas
Event name: 16th International Conference on Geoinformatics - Theoretical and Applied Aspects
Session: Mathematical methods and computer technologies in Geophysics and Geology
Publication date: 15 May 2017
DOI: 10.3997/2214-4609.201701844
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.24Mb )
Price: € 20

Summary:
The relative geometrical spreading controls the amplitude of the waves propagating through the velocity model. Usually, relative geometrical spreading is computed from the ray tracing. In this paper, I derived simple analytical formulae to compute the relative geometrical spreading of P-wave in the stack of acoustic orthorhombic layers with azimuthal variations in symmetry planes. I also analyze the kinematical properties of derived equation and perform the sensitivity analysis with respect to three anelliptic parameters. The simple and accurate approximation for the relative geometrical spreading is derived.


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