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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 (53 items)
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Results 51 - 60 of 97 listed by similarity [list alphabetically]
PDF Putting down roots in earthquake country - Your handbook for earthquakes in the central United States [More info]
If you live near one of the seismic zones in the central United States, this handbook explains why you should be concerned with earthquakes, what you can expect during a quake, and what you need to do beforehand to be safe and reduce property damage.
Putting down roots in earthquake country: Your handbook for the San Francisco Bay region [More info]
If you live or work in the San Francisco Bay region, this handbook explains why you should be concerned with earthquakes, what you can expect during and after a quake, and what you need to do beforehand to be safe and reduce property damage.
Recent earthquakes in Hawaii [More info]
Interactive maps of earthquakes of last 2 hours, last 2 days, and last 2 weeks in Hawaii.
PDF Report on the 2010 Chilean earthquake and tsunami response [More info]
With high property damage, loss of life and fire damage were relatively low. Why? The legal system encourages builders to follow code, the electrical grid was shut down early, and emergency response management was very effective.
Severity of an earthquake [More info]
Description of intensity and magnitude as indicators of the size of an earthquake and the levels of severity measured on the Richter Magnitude Scale and the Modified Mercalli Intensity Scale.
PDF ShakeAlert: an earthquake early warning system for the United States West Coast [More info]
Describes a demonstration system that could be developed to improve the time people have to prepare for the ground shaking that accompanies earthquakes in the Western US.
PDF St. Louis Area Earthquake Hazards Mapping Project [More info]
Overview of USGS research focused on earthquake hazards of this specific area.
PDF The 1964 Great Alaska Earthquake and tsunamis--a modern perspective and enduring legacies [More info]
Summarizes what we learned about this historic earthquake and how our ability to monitor and respond to events of this type have changed, including our awareness of tsunami effects.
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 Hayward fault - Is it due for a repeat of the powerful 1868 earthquake? [More info]
Preparing for earthquakes along this important fault requires studying the history of its movement and its geology, as well as understanding how society has built the area around it.
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