MSATSI

MATLAB package for stress inversion from focal mechanisms

Authors:
Patricia Martínez-Garzón <patricia@gfz-potsdam.de>
Grzegorz Kwiatek <kwiatek@gfz-potsdam.de>
Michele Ickrath
Marco Bohnhoff

Original SATSI library code by Jeanne Hardebeck and Andy Michael; see Hardebeck and Michael [2006] for details. MSATSI package uses MATLAB routine sh.m for appropriate calculation of the horizontal stresses, developed by Bjorn Lund and John Townend; see Lund and Townend [2007] for details. The extensive description of the package together with examples is presented in Martínez-Garzón et al. [2013]. The MSATSI package is described in the paper in Seismological Research Letters. If you find the MSATSI useful in your research, please acknowledge this work by providing a reference to the following studies:

Martínez-Garzón, P., Kwiatek, G., Ickrath, M. and M. Bohnhoff (2014). MSATSI: A MATLAB© package for stress inversion combining solid classic methodology, a new simplified user-handling and a visualization tool. Seismol. Res. Lett. 85 (4), 896-904. DOI: 10.1785/0220130189.

Hardebeck, J. L., and A. J. Michael (2006). Damped regional-scale stress inversions: Methodology and examples for southern California and the Coalinga aftershock sequence, J. Geophys. Res. Solid Earth 111, no. B11, B11310, doi 10.1029/2005JB004144.

Lund, B., and J. Townend (2007). Calculating horizontal stress orientations with full or partial knowledge of the tectonic stress tensor, Geophys. J. Int. 170, no. 3, 1328–1335, doi 10.1111/j.1365-246X.2007.03468.x.

Introduction

MSATSI is a MATLAB© software package that allows performing the stress inversion using earthquake focal mechanisms. MSATSI is based on the C library SATSI created by Hardebeck and Michael [2006] (http://earthquake.usgs.gov/research/software/#SATSI). MSATSI provides an framework for calculating the deviatioric stress tensor together with its uncertainties using bootstrap resampling method. It also allows displaying the stress inversion results using a variety of plots.

The MSATSI package is composed of two MATLAB functions. The first one msatsi.m performs actual stress inversion and the second one, msatsi_plot.m, provides the graphical visualization of stress inversion results calculated with msatsi.

Main features of MSATSI package are:

  • Simple and comprehensive handling of input and output stress inversion data.
  • Variety of graphical representations of the stress inversion results: stereonets, stereotraces, profiles, world stress map-alike plots, stereomaps and stereovolumes.
  • Versatile and adjustable graphical output
  • User friendly interface through the intensive use of MATLAB properties.

Download and User Manual

Please use the external site http://induced.pl/msatsi to register and obtain the download link. The GFZ is not responsible for external content of the website.

Contact

Patricia Martinez Garzon
Scientist
Dr. Patricia Martinez Garzon
Geomechanics and Rheology
Telegrafenberg
Building D , Room 421
14473 Potsdam
+49 331 288-28833
Profile

Contact

Grzegorz Kwiatek
Scientist
Dr. Grzegorz Kwiatek
Geomechanics and Rheology
Telegrafenberg
Building D , Room 422
14473 Potsdam
+49 331 288-1384
Profile