A new method to invert InSAR data to resolve stress changes on a fracture embedded in a 3D heterogeneous crust

Autor:	Dabaghi, Farshid, Bodart, Oliver, Cayol, Valérie
Rok vydání:	2022
Předmět:	Physics - Geophysics
Druh dokumentu:	Working Paper
Popis:	We present a new method to invert variable stress changes of fractures from InSAR ground displacements. Fractures can be either faults or magma intrusions, embeded in a 3D heterogeneous crust with prominent topographies. The method is based on a fictituous domain approach using a finite element discretization of XFEM type. A cost function involves the misfit between the solution of the physical problem and the observed data together with the smoothing terms. Regularization parameters are determined by using L-curves. The method is then reformulated to be applied to InSAR data (masked and noisy), projected in Earth-Satellite directions. Synthetic tests confirm the efficiency and effectiveness of our method.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2212.03198 Zobrazit plný text záznamu View this record from Arxiv