Seismic Network Operations

In support of the USGS mission to predict and monitor hazardous events in near-real time, the USGS installs, operates, and maintains seismic stations in the US and around the world. Data from these stations are critical to the USGS National Earthquake Information Center for the detection, location and characterization of earthquakes around the world. Most stations transmit data in near-real-time, thereby contributing to USGS rapid earthquake information products such as alerts and email notices, Web pages, ShakeMaps, and PAGER earthquake impact estimates. Outside of the USGS, these data play a major role in the operations of the National Oceanic and Atmospheric Administration Tsunami Warning Centers and in the operations of the Comprehensive Test Ban Treaty Organization and the Air Force Technical Applications Center, in their respective nuclear test treaty monitoring missions.

Name	Number of Stations
ANSS Backbone	95
Caribbean Network	9
Global Seismographic Network	143