Title :
Automated procedure for InSAR data inversion using Finite Element Method
Author :
Currenti, Gilda ; Negro, Ciro Del ; Scandura, Danila ; Williams, Charles A.
Author_Institution :
Ist. Naz. di Geofisica e Vulcanologia, Catania, Italy
Abstract :
Source inversions performed using different kind of static deformation data, such as GPS displacements, DInSAR imagery, levelling and EDM measurements, suggest that slip on fault is usually not uniform and is better modeled as a distribution of dislocation sources. To this aim, we developed an automated procedure for geodetic data inversion to estimate slip distribution along the fault interfaces. Finite Element Models are used to compute synthetic Green¿s functions for static displacement. FEM-generated synthetic Green¿s functions are combined with inverse methods to estimate slip distributions that explain the observed ground deformation.
Keywords :
Global Positioning System; Green´s function methods; faulting; finite element analysis; geophysical techniques; radar interferometry; synthetic aperture radar; topography (Earth); DInSAR imagery; EDM measurements; Finite Element Method; GPS displacements; InSAR data inversion; dislocation sources distribution; fault interfaces; geodetic data inversion; inverse methods; levelling; slip distribution; static deformation data; synthetic Green´s functions; Deformable models; Distributed computing; Finite element methods; Green´s function methods; Inverse problems; Numerical models; Quadratic programming; Surface topography; Synthetic aperture radar; Synthetic aperture radar interferometry; InSar Data; geodetic inversion; numerical modeling;
Conference_Titel :
Use of Remote Sensing Techniques for Monitoring Volcanoes and Seismogenic Areas, 2008. USEReST 2008. Second Workshop on
Conference_Location :
Naples
Print_ISBN :
978-1-4244-2546-4
Electronic_ISBN :
978-1-4244-2547-1
DOI :
10.1109/USEREST.2008.4740336
