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We deal with the problem of the linearized and isotropic elastic inverse scattering by interfaces. We prove that the scattered -parts or -parts of the far field pattern, corresponding to all the incident plane waves of pressure or shear types, uniquely determine the obstacle geometry for both the penetrable and impenetrable obstacles. In addition, we state a reconstruction procedure. In the analysis, we assume only the Lipschitz regularity of the interfaces and, for the penetrable case, the Lamé coefficients to be measurable and bounded, inside the obstacles, with the usual jumps across these interfaces.

On the Inverse Elastic Scattering by Interfaces Using One Type of Scattered Waves