Introduction

AUTOSIGMA and SIGMA are modules for SeisComP3 to compute and to visualize strong motion event parameters. The calculated parameters can be stored as incidents in a database and used to create customized reports. While AUTOSIGMA computes the strong motion parameter automatically based on a static configuration, SIGMA provides a highly flexible user-interaction through a modern and user-friendly graphical user interface (GUI).

../_images/sigma_map_pga.png

Figure 5: SIGMA GUI showing PGA.

Applications

  • Automatic and Interactive strong ground motion analysis for earthquakes
  • Map generation for MMI, PGA, PGV
  • Computation of earthquake engineering parameters
  • Comparison, evaluation and selection of Ground Motion Prediction Equations (GMPEs)
  • Report and image generation for earthquake information services

Features

  • User friendly and modern interactive graphical interface
  • Semi-automatic and interactive data processing
  • Maps showing intensity (MMI)
  • Maps showing Peak Ground Acceleration (PGA) and Velocity (PGV)
  • RMS of acceleration, velocity and displacement
  • Arias (Ia) and characteristic (Ic) intensities
  • Cumulative absolute velocity (CAV)
  • Specific energy density (SED)
  • Predominant (Tp) and mean (Tm) periods
  • Fourier, power and response spectra
  • Interactive definition of complex rupture geometries
  • Interface to SeisComP3 and FDSN web services for imporing seismic events
  • Handling of internal incidents and export to the SIGMA database
  • Supporting open source C++ and Python plug-ins
  • Interface to OpenQuake hazard library and user-defined python scripts for calculating the ground motion parameters
  • Report generation based on user-defined scripts
  • On-the-fly customization of processing and look and feel parameters.

Plug-ins

AUTOSIGMA and SIGMA provide and make use of plug-ins allowing to calculate ground motion parameters based on GMPE s.

Promotion at science conferences

The SIGMA module has been demonstrated, promoted and discussed with scientists and the SeisComP3 community at international science conferences, e.g.:

  • B. Weber, J. Becker, D. Roessler and the team of gempa: Earthquake Intensity and Strong Motion Analysis within SeisComP3, 2017, Bad Breisig, Germany, AG Seismologie meeting
  • B. Weber, J. Becker, H. Ghasemi, P.R. Cummins, J. Murjaya, A. Rudyanto, D. Roessler and team of gempa: EARTHQUAKE INTENSITY AND STRONG MOTION ANALYSIS WITHIN SEISCOMP3, 2017, New Orleans, USA, AGU Fall Meeting, abstract S41F-02.