Japan is on alert after a magnitude 7.5 earthquake struck its northern regions late on Monday, prompting tsunami warnings and a rare government advisory about the possibility of a “megaquake” over the ...

Japan was struck by a new 6.9-magnitude earthquake on Friday morning, hitting a similar area of the Pacific coast to Monday night’s powerful 7.5-magnitude tremor. The new quake off Aomori prefecture ...

A thick layer of slippery clay on the ocean floor may have formed the weak spot that enabled a magnitude 9.1 quake to make ...

Multiple earthquakes, including one at 6.2 magnitude, struck western Japan late Tuesday morning local time, centered in Shimane Prefecture and neighboring Tottori Prefecture. The initial quake hit at ...

That expedition used Japan's ultra-advanced drilling ship Chikyū, and marked the first time scientists had ever drilled directly into the fault zone of a recent megathrust earthquake. They drilled ...

Earthquakes can’t be predicted. But a manga artist’s dream of a July 5 'megaquake' has spooked some residents and travelers.

A new study claims that an 80-100-foot-wide layer of clay exacerbated the 2011 earthquake.

New research shows that a fragile clay layer beneath the Japan Trench played a key role in the extreme seafloor movement ...