Finite element inversion of DInSAR data from the Mw 6.3 L’Aquila earthquake, 2009 (Italy)

摘要: [1] Fault slip distribution is usually retrieved from geodetic data assuming that the local crust an elastic, homogeneous and isotropic half-space. In last decades spatially dense (e.g., DInSAR maps) have highlighted complex patterns of coseismic deformation require new modeling tools, such as numerical methods, able to represent rheological geometrical complexities Earth's crust. this work, we develop a procedure perform inversion based on finite element method, accounting for more realistic description The method applied 2009 L'Aquila earthquake (Mw 6.3), using images displacement. Results highlight non-negligible influence medium structure: heterogeneous models show discrepancies up 20% in fault values. Furthermore, area appears above hypocenter. We also resolution study, showing information about distributions should be considered averaged surrounding patches.