 Advanced National Seismic System

The Advanced National Seismic System (ANSS) is a network of seismic monitoring systems in the United States that aims to provide real-time earthquake data and enhance the nation’s ability to respond to seismic events. Established by the United States Geological Survey (USGS), the ANSS integrates various seismic networks to improve earthquake detection, characterization, and the dissemination of earthquake information.