9. Glossary¶

Abbreviations, acronyms, and initialisms used in this report

ANSS: Advanced National Seismic System: A USGS initiative to provide seismic monitoring for at-risk regions of the United States
California EMA: The California Emergency Management Agency (formerly the California Office of Emergency Services)
DYFI: Did You Feel It?
EHP: USGS Earthquake Hazard Program
ENS: Earthquake Notification System: earthquake notifications via text/email from USGS’s Earthquake Hazard Program
FEMA: Federal Emergency Management Agency: part of the U.S. Department of Homeland Security
GIS: Geographic Information System
GMICE: Ground-Motion–Intensity Conversion Equation
GMPE: Ground-Motion Prediction Equation
GSM: Global ShakeMap
HAZUS: HAZards US: a loss-estimation program developed by FEMA
IM: Intensity Measure: often used as a generic reference to Peak Ground Motions
IPE: Intensity Prediction Equation
ISO: International Standards Organization
MMI: Modified Mercalli Intensity
NEIC: the National Earthquake Information Center; part of the USGS, located in Golden, Colorado
PAGER: Prompt Assessment of Global Earthquakes for Response
PGA: Peak Ground Acceleration
PGM: Peak Ground Motion: a generic term for PGA and PGV
PGV: Peak Ground Velocity
USGS: the United States Geological Survey, a bureau of the U.S. Department of the Interior.

ShakeMap Documentation