The temblor happened at 9:19 p.m. Japan time about 7 miles ... U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that follows a larger one in ...

A megaquake is defined as an earthquake with a magnitude of 8 or greater, bringing the potential for exceptional destructive power and a strong likelihood of generating a tsunami. The most likely ...

Land topography is usually formed gradually over long periods of time, but sometimes a single event can dramatically change ...

Two of Japan's nuclear power plants were rattled on Monday when a magnitude 6.6 earthquake struck southwest Japan, prompting a tsunami advisory for parts of the region. This map shows the ...

A record-breaking deep earthquake registered in May 2015 offshore of Japan likely was not a tectonic event but triggered by a ...

A strong earthquake struck southwestern Japan, the U.S. Geological Survey said, prompting authorities to issue a tsunami advisory.

A tsunami warning has been issued for a magnitude 6.9 earthquake in the Hyuga-Nada Sea off the coast of Japan, according to the Japan Meteorological Agency.

The Great East Japan Earthquake on March 11 ... data and almost instantaneously issue estimates of its size and likely location. This network is crucial to informing Japan’s early-warning ...

Japan's nuclear plants faced global scrutiny after the devastating 2011 tsunami triggered by a 9.0 magnitude earthquake.

Japan is highly earthquake-prone due to its location on the “Ring of Fire”, where intense seismic and volcanic activity occurs. “Japan sits on the boundaries of four tectonic plates ...