Décollement (low angle detachment) source.
Finite fault.
Fault cluster.
Fault system.
Gridded (background) seismicity.
Subduction interface.
Subduction interface cluster.
Subduction interface gridded seismicity.
Subduction interface system.
Subduction intraslab.
Subduction intraslab.
The combined source types, used in web services
Zone (a.k.a. Area).
Identifier for different earthquake Source types. These are declared in a preferred order of iteration, with potentially longer running source types coming first.
Ported from: https://code.usgs.gov/ghsc/nshmp/nshmp-lib /-/blob/main/src/main/java/gov/usgs/earthquake/nshmp/model/SourceType.java