A program of studies with instruments to provide accurate and timely data and information on seismic events, including their effects on buildings and structures, employing modern monitoring methods and technologies.
Provides links to explanatory materials for the layperson, including information on concepts behind earthquake maps, the use of probability, what the maps mean, how they are made, and answers to frequently asked questions.
Information on earthquakes in central and eastern United States with links to earthquake monitoring, published products, recent earthquake information, discussion group, and current projects.
GPS measurements made since 1996 seem to show this earthquake-prone area slowing down. Is it time to relax? Scientists who studied these data in detail say no, and this fact sheet explains why.
National seismic hazards maps, global seismic hazards map, predictive intensity maps, shaking hazards maps and probabilities for California, and a variety of fact sheets on earthquakes.
Online booklet on earthquake history, earthquake occurrences, measuring earthquakes, causes, relationship of volcanoes and earthquakes and earthquake prediction.
Shows where earthquakes occur here, the type of damage that has occurred, and the information that USGS provides to help people anticipate and understand this hazard.