Branch of geology studying the physical characteristics and phenomena of the earth and its atmosphere.
This dynamic planet: World map of volcanoes, earthquakes, impact craters, and plate tectonics [ More info] Online world map with booklet (PDF format) giving an account of plate tectonics, volcanology, earthquake activity, and impact craters.
UCERF3: A new earthquake forecast for California's complex fault system [ More info] Explains how we estimate the probability of earthquakes in the state of California. The underlying scientific model was improved to account for factors that can affect the severity of earthquakes.
Understanding earthquake hazards in urban areas - Evansville Area Earthquake Hazards Mapping Project [ More info] Evansville, Indiana, is near the Wabash Valley and New Madrid seismic zones and has experienced minor damage from earthquakes in the past 200 years. This fact sheet describes three types of USGS earthquake hazard maps for Evansville and surrounding areas.
United States National Strong-Motion Project (earthquakes) [ More info] National Strong-Motion Program home page with links to program news, recent events, and datasets of digitized accelerograms downloadable as PC (*.zip) and Unix (*.tar.z) files, data processing, stations, research, publications, and personnel.
USGS and the Southern California Integrated GPS Network (SCIGN) [ More info] Field Office involved in operating GPS stations, data recording, and supplying of earthquake data. Links to GPS data analysis, photos, and technical information.
What is an Ocean Bottom Seismometer? [ More info] Description and uses of the Ocean Bottom Seismometer; a self contained data-acquisition system which free falls to the ocean floor and records seismic data generated by airguns and earthquakes.
What on Earth is plate tectonics? [ More info] Discussion and diagrams on plate tectonics and the structure of the Earth for beginners with link to a detailed version: This Dynamic Earth for more information.
Alphabetical Index of Topics
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