Abstract

The Krauklis wave is a slow dispersive wave mode that propagates in a fluid layer bounded by elastic media. In a model of alternating fluid and elastic layers, two interface waves can exist at low frequencies: The first wave propagates mostly in the elastic layer and has little dispersion, while the second wave can have strong dispersion and propagates as a Krauklis wave for some parameter combinations. Analytical conditions predict appearance of the Krauklis wave for higher frequencies and low porosities. Interface-wave velocities depend on model porosity, which potentially can be used for fracture mapping.

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