DTERRAIN: 3D inverse modeling of InSAR and surface displacement data

Software for the joint inversion of any surface displacement data (such as InSAR, leveling and GPS) to recover a three-dimensional distribution of volumetric deformation. The software finds the volumetric strain for each individual cell compartment of a 3D rectangular domain which justify the set of surface displacements registered in any spatial direction given their cosine directors (e.g. any line of sight, leveling or full GPS). The model is searched by setting a least-squares objective function composed by data misfit and smoothness constraints (minimum spatial deformation variation) and establishing a conjugate gradient search scheme. The software reports the full 3D deformation model and all the attained data residuals for model evaluation.
The software code is composed by three ASCII files with fortran source codes (*.f files). The documents include a sample input files for model preparation, which correspond to the synthetic example described in the associated manuscript "3D volumetric strain distribution of the Cerro Prieto Geothermal Field inferred from inverse modeling of InSAR and leveling data" by the same authors.