Multi‐geometry SAR Interferometry for CO2 sequestration monitoring

Abstract

Summary It is well established that satellite-based synthetic aperture radar (SAR) interferometry can provide accurate and spatially dense surface deformation measurements. In the InSalah project SAR interferometry has proven effective in monitoring surface deformation induced by CO2 injection. Typically, a single SAR geometry provides a projection of the surface displacement vector along the look vector or line-of-sight (LOS). However, in this paper we highlight the utility of combining SAR data from two or more geometries in order to derive a two-component surface displacement field. We also show how the availability of both vertical and East-West displacement components better constrains an inversion for injection-related deformation improving our understanding of reservoir dynamics.