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Event location and magnitude calculation: GaMMA method

caution

Module currently in development.

The module performs seismic association and location via the GaMMA method.. It starts with associating Pick objects and calculates event magnitude based on Amplitude readings of the P-wave peak ground displacement.

The module creates Event and Alert objects that are passed to subsequent modules, such as those for alerting.

Configuration​

RTCatalogue

  • Use Amplitude [boolean]: Use amplitudes and calculate magnitude
  • Dbscan eps [float]: The time window length for pick catalogue scan
  • Dbscan min samples [integer]: Minimum number of picks to scan
  • Min picks per eq [integer]: Minimum number of picks associated with an event
  • Max sigma11 [float, seconds]: Maximum time sigma
  • Max sigma22 [float, seconds]: Maximum amplitude sigma
  • Max sigma12 [float, seconds]: Maximum time x amplitude sigma
  • Pvel [float, km/s]: Constant P-wave velocity
  • Verbose [boolean]: Logs are printed in when set to true