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Earthquakes
Ground shaking caused by the sudden release of accumulated strain by an abrupt shift of rock along a fracture in the earth or by volcanic or magmatic activity, or other sudden stress changes in the earth.
Subtopics:
Earthquake occurrences (42 items)

Earthquake hazards (50 items)
Related topics:


Results 81 - 90 of 93 listed alphabetically [list by similarity]
The great 1906 earthquake, 100 years later [More info]
Annotated list of resources about the great earthquake of 1906, which caused significant devastation in and around San Francisco, California, compiled for the 100th anniversary of the disaster.
PDF The story of the Hawaiian Volcano Observatory -- A remarkable first 100 years of tracking eruptions and earthquakes [More info]
History of the Hawaiian Volcano Observatory (HVO), established in 1912, including an overview of Hawaiian volcanic processes and USGS monitoring techniques.
This dynamic Earth: the story of plate tectonics [More info]
Online booklet giving an introduction to the concept of plate tectonics and complements the information on the map This Dynamic Planet published in 1994 by the U.S. Geological Survey (USGS) and the Smithsonian Institution.
PDF 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.
Tsunamis & earthquakes [More info]
Homepage for tsunami research with links to information and images on basics, tsunamis in the Pacific Northwest, the 1998 Papua New Guinea tsunami, research on specific tsunamis, and animations in various formats.
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.
PDF 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.
PDF United States National Seismic Hazard Maps [More info]
Maps indicating areas where earthquakes may cause damage or disrupt human activities, with information about how those maps are compiled.
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.
Volcano Hazards Program, California Volcano Observatory [More info]
Overview of volcano hazards in California with links to monitoring data including earthquakes and deformations, long-term outlook, volcano hazards in the area, USGS response plan, image gallery, monitoring and topical studies, publications and references.
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