This brief historical account describes some of the effects of the Cajon Pass earthquake, which struck near San Bernardino, California in 1899. It also incudes the time, approximate location, and approximate magnitude...

This fact sheet discusses the dangers associated with debris flows, as seen in the United States. Topics include an introduction to the properties of debris flows, a discussion of where they occur, their association with...

This bulletin provides information on the recent eruptive activity of Augustine Volcano in Alaska. Topics include some history of the volcano, its geologic setting as part of the Aleutian island arc, and earthquake...

This page presents vital statistics, summary of effects, and discussion of our meager knowledge about the location of the epicenter for the Great Fort Tejon, California, earthquake of 1857.

The Pacific Northwest Geodetic Array (PANGA), an organization devoted to the study of earthquakes and crustal deformation along the Cascadia subduction zone, provides information on the organization's facilities,...