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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 (49 items)
Related topics:
Results 41 - 50 of 92 listed alphabetically [list by similarity]
Geologic hazards team [More info]
An organizational unit within USGS that studies earthquakes, landslides, and geomagnetism. Contact information and descriptions of current research projects.
Glacier effects of the M7.9 Denali fault earthquake of November 3, 2002 [More info]
Description and photos documenting offsets and 260 km rupture in the Denali glacier in central Alaska after the November 3, 2002 earthquake, the 9th largest earthquake in the United States in the last 200 years.
Global Seismographic Network [More info]
Worldwide network of seismic monitoring stations coordinated by a variety of national and international organizations.
PDF Ground-shaking hazard from earthquakes [More info]
Postcard available for downloading and printing.
Hawaiian Volcano Observatory (HVO) earthquakes: HVO seismic network [More info]
Description of the seismic monitoring of the active Hawaiian volcanoes with information on the network, instrumentation, and recording stations with links to related information.
PDF Helping safeguard Veterans Affairs' hospital buildings by advanced earthquake monitoring [More info]
We put seismic monitoring instruments into 20 VA hospital buildings, connected with computers that analyze their data to determine rapidly the structural health of the buildings in the event of earthquakes.
Historical earthquakes: lists and statistics [More info]
Lists and maps of historic earthquakes by geographic area, magnitude, destructiveness, and other characteristics.
Joshua Tree National Park geology: on shaky ground [More info]
Description of earthquake that was felt in Joshua Tree region (1999) and links to earthquake summary, shaded relief map, aerial photos of the rupture zone, shaking intensity maps, damage reports, and seismograph network map.
Latest earthquakes in the USA - Past 7 days [More info]
Real-time earthquake maps of the conterminous U.S., Alaska, Hawaii, and Puerto Rico displaying magnitude and location of earthquake activity in the past hour, past day, and past week.
Latest worldwide earthquakes [More info]
Near real-time list of earthquakes recently occurring anywhere in the world.
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