MSATSI: A MATLAB Package for Stress Inversion Combining Solid Classic Methodology, a New Simplified User-Handling, and a Visualization Tool

摘要

The estimation of the stress-field orientation from focal mechanisms of earthquakes is a relevant tool to understand crustal mechanics and the physics of earthquakes. In global seismology, Formal Stress Inversion (FSI) is a well-established technique to study tectonic processes associated with the occurrence of large earthquakes (e.g., Hardebeck and Michael, 2004; Yoshida et al., 2012). Information on the stress-field orientation is also relevant for the exploitation of hydrocarbon and geothermal reservoirs. Knowledge of the orientation of the maximum horizontal stress (σ_(Hmax)) is crucial for reservoir development, such as drilling and leakage risk assessment (Terakawa et al., 2012; Martínez-Garzón et al., 2013). Additionally, the FSI technique may be useful for understanding the physics of rupture processes at a microscale in the frame of rock deformation experiments in the laboratory.