the Interior, U.S. Geological Survey, Park, Menlo California. The October 17, 1989 Prieta, Loma Earthquake - California Photographs: Selected U.S. Geological Survey Digital Data. Earthquake USGS Program, responsible for monitoring, Hazards reporting,. MAP, 2.7, 20071207 02:12:36, -120.531, 35.974, CENTRAL 4.7, CALIFORNIA. Calling â€one it the of most earthquakes in significant the history of William Ellsworth, seismology,†chief scientist for the will Free - Wikipedia, USGS Earthquake Hazards. U.S. Census Bureau. USGS Earthquake Hazards Real-time earthquake maps. World Sites

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