is a Data Source.
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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| ID | Name | URL | Category | Format | Description |
|---|---|---|---|---|---|
| usgs-comcat.search | USGS Earthquake Catalog Search | search | GraphicalInterface | http | Web interface for searching and downl... |
| usgs-comcat.fdsnws | USGS FDSN Event Web Service | 1 | ProgrammingInterface | http | FDSN-standard event web service provi... |
| ID | Name | URL | Category | Format | Relation | Description |
|---|---|---|---|---|---|---|
| knowwheregraph.graph | KnowWhereGraph RDF Knowledge Graph | knowwheregraph.org | GraphProduct | rdfxml | had primary source | KnowWhereGraph knowledge graph with 2... |
The Advanced National Seismic System (ANSS) Comprehensive Earthquake Catalog (ComCat) is maintained by the U.S. Geological Survey (USGS) Earthquake Hazards Program. It is an authoritative catalog of earthquake events, combining seismic records from contributing ANSS networks and other sources. Each entry includes event origins (location, depth, and origin time), magnitudes, and associated phase and product information.
ComCat serves as an upstream source for the KnowWhereGraph.
ComCat is produced by the U.S. Geological Survey, a U.S. federal agency; its data are generally in the U.S. public domain. Please attribute the USGS Earthquake Hazards Program when using the catalog.
Created: June 18, 2026 | Last modified: June 18, 2026