Poroelastic near-field inverse scattering

A multiphysics data analytic platform is established for imaging poroelastic interfaces of finite permeability (e.g., hydraulic fractures) from elastic waveforms and/or acoustic pore pressure measurements. This accomplished through recent advances in design non-iterative sampling methods to inverse scattering. The direct problem formulated via the Biot equations frequency domain where a network discontinuities illuminated by set total body forces and fluid volumetric sources, while monitoring induced (acoustic elastic) scattered waves an arbitrary near-field configuration. thin-layer approximation deployed capture rough multiphase nature whose spatially varying hydro-mechanical properties are priori unknown. In this setting, well-posedness analysis forward yields admissibility conditions contact parameters. light which, scattering operator its first second factorizations introduced their mathematical carefully examined. It shown that non-selfadjoint system leads intrinsically asymmetric factorization which may be symmetrized at certain limits. These results furnish robust framework systematic regularized convex cost functionals minimizers underpin indicators. proposed solution synthetically implemented with application spatiotemporal reconstruction fracture networks deep-well