Q: How to set the minimum number of phases required to perform an automatic location?

A: First, you should know that this number cannot been set to a value lower than 6. It is hardcoded in the software. By default, SC3 is configured with a default value of 8. You can lower this value by doing the following modifications:


# replacing 8 with the desired value
eventAssociation.minimumDefiningPhases = 8


# replacing 8 with the desired value
autoloc.minPhaseCount = 8

$HOME/seiscomp3/trunk/share/autoloc/grid.conf: Change the last value of the lines related to the desired region, the format is as follows: Latitude, Longitude, Depth, diameter, maximum station distance, minimum pick count Note: Diameter means it is sensitive to events within x° of the center.