USGS Comprehensive Earthquake Catalog (ComCat)
The Advanced National Seismic System (ANSS) Comprehensive Earthquake Catalog (ComCat) is the U.S. Geological Survey's authoritative catalog of earthquake events. It aggregates seismic event records contributed by ANSS networks and other sources, including event origins (location, depth, and time), magnitudes, and associated phase and product data. ComCat is accessible through a web-based earthquake search interface and a programmatic FDSN-standard event web service, and serves as an upstream source for the KnowWhereGraph.
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