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Authors: D'Auria, L.* 
Massa, B.* 
Title: Stress Inversion of Focal Mechanism Data Using a Bayesian Approach: A Novel Formulation of the Right Trihedra Method
Issue Date: May-2015
Series/Report no.: 3/86 (2015)
DOI: 10.1785/0220140153
Keywords: stress inversion
focal mechanisms
Subject Classification04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 
04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress 
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques 
05. General::05.01. Computational geophysics::05.01.03. Inverse methods 
Abstract: We propose a Bayesian approach for the determination of the stress field from focal mechanism datasets. This method is a revision of the right trihedra method (RTM), used for both fault striation and focal mechanism data. The new probabilistic formulation of the RTM method (BRTM) allows a quantitative estimation of the confidence regions for the principal stress axes. Using an appropriate graphical representation, the method is able to provide simultaneous information about the stress field and its reliability.
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