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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 (41 items)

Earthquake hazards (27 items)
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Results 1 - 10 of 66 listed alphabetically [list by similarity]
PDF A volcano rekindled; the renewed eruption of Mount St. Helens, 2004-2006 [New Window]
Advanced National Seismic System (seismic network) [New Window]
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.
Advanced National Seismic System: Products and services [New Window]
Maps, data, and services provided to help people understand earthquakes that have occurred.
Albuquerque Seismological Lab [New Window]
The USGS Seismological Laboratory in Albuquerque installs and maintains a world network of seismograph stations, collects the seismic data, and evaluates seismic instruments. Site includes links to ASL publications, earthquake maps and seismic data.
ANSS - Advanced National Seismic System [New Window]
Nationa network of seismic monitoring stations coordinated with a variety of regional organizations and academic institutions.
Central California /San Francisco Bay Earthquake Hazards Project [New Window]
Information on earthquakes in central California and the San Francisco region with links to four types of field studies, deep seismic investigations, geotechnical investigations, shallow seismic imaging, and airborne geophysical surveys.
Earth science photographic archive [New Window]
Photographic archive collection from the USGS Photo Library. Photos dated 1868-1992 are of geology, earthquake damage, national parks, pioneer photographers, St. Helens eruption and mining and available at 100, 700 and 1400 dots/inch resolution.
Earthquake "Top 10" Lists & Maps [New Window]
Lists of largest earthquakes in the world and in the United States, earthquake facts and statistics, deaths from earthquakes, earthquakes by magnitude, and significant earthquakes.
Earthquake and fault data for Google Earth [New Window]
Downloadable data for earthquakes and faults for use with the Google Earth software
Earthquake Geology and Paleoseismology [New Window]
Geological effects of earthquakes on the crust and landscape, with studies of prehistoric earthquake activity using geological evidence.
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