Scale-dependency of Thomsen parameters for layers with intermediate thickness
conference paper
The Thomsen anisotropy parameters (Thomsen, 1986) describe the most important aspects of anisotropy on velocity. In the case of anisotropy caused by fine layering effects, the parameters are in fact defined in the long wavelength limit, meaning that it is implicitly assumed that all the fine layering is very fine compared to the dominant seismic wavelength. When this assumption is not met (which is often the case to some degree in practical cases), the Thomsen anisotropy parameters can still be calculated using a moving averaging technique. It will be shown with an example that the anisotropy parameters derived in this way may become strongly dependent on the scale (i.e. related to the size of the averaging window) they are calculated on.
TNO Identifier
532847
ISSN
10523812
Source
SEG Technical Program Expanded Abstracts, 21(1), pp. 1947-1950.
Publisher
Society of Exploration Geophysicists SEG
Collation
4 p.
Pages
1947-1950
Files
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