GROUND DEFORMATION INVERSION SCHEME USING A 3D FEM-BASED MODEL:
AN APPLICATION TO ETNA VOLCANO
Gilda Currenti, Danila Scandura, Ciro Del Negro, Charles Williams
Over the recent years, geodetic data, such as GPS displacements, DInSAR imagery, levelling and EDM measurements, has highlighted complex deformation pattern in proximity of active seismogenic structures. These patterns cannot be simply explained assuming uniform slip along the fault rupture but they are better modeled using heterogeneous slip distribution. To this aim, we developed an automated procedure for geodetic data inversion to estimate slip distribution along the fault ruptures. Finite Element Models are used to compute synthetic Green’s functions for static displacements. FEM-generated synthetic Green’s functions are then combined with inverse methods to estimate slip distributions that explain the observed ground deformation.