ANSS Regions and Stations
The ANSS (Advanced
National Seismic System is composed of representatives from most
of the US regional seismic networks and the National Seismic Network.
The ANSS maintains an
authoritative catalog
of events based on a merging of catalogs from the ANSS member networks.
This plot shows the authoritative regions in the western U.S.,
along with the locations of seismic stations in each network.
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