The US experiences violent earthquakes, but the damage and death toll is much lower than in many countries because of the work of federal seismologists and engineers.

An extremely long rupture is confirmed

The Earthquake Event Page application supports most recent browsers, view supported browsers. Or, try our Real-time Notifications, Feeds, and Web Services.

Seismic slip layers are ∼1 mm−1 cm thick, regardless of temperature, rock type, or depth, balancing heat production and dissipation Thicker earthquake slip layers are possible but cannot be detec...

Release announcements of maps, reports and other publications of the California Geological Survey.