Advanced National Seismic Systems (ANSS) Performance Standards

This document establishes the standards for performance related to seismic monitoring, product generation, 
and data availability for the U.S. Geological Survey’s (USGS) Earthquake Hazards Program (EHP) and 
governing the operation of the Advanced National Seismic System (ANSS). These standards are intended 
to assure quality and consistent performance within ANSS for all participants related to monitoring and 
evaluation of significant earthquakes nationwide. The standards and related metrics are, in some cases, 
aspirational, i.e., ANSS infrastructure and data processing capabilities may need to be improved for some 
ANSS participants. Aspirational standards include all metrics that are not specific to earthquakes at and 
larger than the articulated response magnitudes.