Contents
TOPOGRAPHY EFFECTS ON THE DISPLACEMENTS AND GRAVITY CHANGES DUE TO MAGMA INTRUSION
Published: Aug 2002
Pages: 215 - 221
Authors: MARIA CHARCO, LADISLAV BRIMICH, JOSE FERNANDEZ
Abstract: The paper describes a method for including topographic effects in a thermo-visco-elastic model. An approximate methodology for the consideration of topography in the computation of thermo-viscoelastic displacement and gravity changes was used. It gave us a relatively general and simple solution useful for solving the inverse problem. Our results show that for volcanic areas with an important relief, the perturbation of the thermo-viscoelastic solution (deformation and total gravity anomaly) due to topography can be quite significant. In consequence, neglect of topographic effects can give a rise to significant errors in the estimation of surface displacements and gravity changes, and therefore in the estimation of the intrusion characteristics obtained solving the inverse problem.
Keywords: ground deformation modelling, topographic effect
Download PDF documentVolume 53 no. 4 / August 2002
MARIA CHARCO, LADISLAV BRIMICH, JOSE FERNANDEZ
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