The Pacific Ring of Fire can be clearly seen on the map. Over 450 of the world’s active and dormant volcanoes are located here, but this area is also highly active in terms of earthquakes.

Volcanoes and earthquake activity often occur in similar places in narrow zones of activity, as shown on the map. These zones include: the Pacific Ring of Fire around the Pacific Ocean the Mid ...

Twitter messages offer first-hand accounts of earthquakes within minutes. Analyses of their content and geographic distribution can ... brought to the world by a service better known for keeping ...

Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that follows a larger one ...

Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that follows a larger one ...