The magnitude measures the energy released by the rupture of the fault causing an earthquake. Seismic intensity, in contrast, measures surface damage. VIDEOGRAPHIC ...

A moderately strong, 5.2-magnitude earthquake struck in Southern California on Monday, according to the United States ...

A minor, 3.9-magnitude earthquake struck ... based on the Modified Mercalli Intensity scale. When aftershock data is available, the corresponding maps and charts include earthquakes within 100 ...

Although the Richter Scale laid the foundation for modern seismology, it is no longer the primary tool scientists use to report an earthquake’s magnitude. Today, researchers use more advanced ...