Intensity and ground motion analysis
What is SIGMA
SIGMA and AUTOSIGMA compute and visualize strong ground motion parameters for earthquakes. The calculated parameters can be stored as incidents in a database and used to create customized reports. While AUTOSIGMA computes the strong motion parameters automatically based on a static configuration, SIGMA provides a highly flexible user-interaction through a modern and user-friendly graphical user interface (GUI).
Our modules for strong ground motion analysis comprise AUTOSIGMA for automatic and SIGMA for highly interactive data processing.
AUTOSIGMA is triggered automatically by seismic events received from SeisComP or manually by on operator. It computes the ground motion parameters for configured regions and stations based on pre-defined thresholds and processing parameters. Maps, waveforms and all relevant parameters are stored in a database and in files. The data products can be modified and reprocessed based on tailored scripts. Customized GMPEs can be configured.
SIGMA provides operators with a user-friendly GUI and great flexibility to manually process data from strong motion and weak motion seismometers. GMPEs based on internal implementations and even external libraries and user-provided scripts can be applied, analyzed and compared. This flexibility allows to interactively find the most appropriate GMPE for the considered region. This GMPE can be used to create maps and reports interactively or automatically by AUTOSIGMA.
The SIGMA module has been demonstrated, promoted and discussed with scientists and the SeisComP community at international science conferences, e.g.: