Low-frequency Propagation Through Fine Layering

Folstad, Per Gunnar (Schlumberger Cambridge Research, England) | Schoenberg, Michael (Schlumberger Cambridge Research, England)


FINELY LAYERED MODEL Fine layering of the order l/10 of the smallest wavelength Any number of homogeneous fine layers of a given total thickness or less does not affect seismic wave propagation other than can be replaced by a homogenous equivalent thick layer by seeming to make the medium anisotropic. By applying that behaves, under static loading, either applied stress or equivalent medium theory (Backus, 1962), layering on a finer applied strain, in exactly the same manner as the set of fine scale may be replaced by thicker, homogeneous equivalent layers. Static response or time invariance can be mathematically transversely isotropic (TI) I a y em, thus creating a model with extended to mean slow variation, where the meaning far fewer layers. This is demonstrated by calculating transmitted of this is that the load is equilibrated throughout the thick seismic signals for varying angle of incidence through layer much more quickly (due to a very rapid time for signal finely layered models, and comparing them to those calculated propagation across the layer) than.the

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