Japan's weather agency said Friday that a malfunction in the ocean-floor observation system off the Pacific coast, installed ...

The Japan Meteorological Agency has begun using the label "data not available" when tsunami observation systems are damaged ...

Japan's weather agency said Wednesday that data from an offshore tsunami gauge in the Pacific Ocean is currently unavailable, ...

Japan’s new earthquake-detection network lengthens warning times, and researchers in Wales have harnessed nuclear blast ...

If the ocean floor had a nervous system, it might look something like this: thousands of miles of fiber-optic cables ...

A powerful magnitude 7.5 earthquake struck off Russia’s Kamchatka Peninsula early Sunday, just 19 minutes after a 7.0 quake ...

The tsunami threat to populated areas in Kamchatka has passed,' said Russia's emergencies ministry a few hours later.

Residents of Russia's Kamchatka Peninsula were warned of potential tsunami waves as a series of earthquakes, including a 7.4 ...

Several earthquakes, including a 7.4 magnitude one, struck off the Russian coast on Sunday, according to the U.S. Geological Survey, prompting brief warnings of potential tsunami waves on the nearby ...

Three quakes, with one magnitude 7.4, recorded near Petropavlovsk-Kamchatsky, capital of Russia’s Kamchatka region.

In Japan, swarms of earthquakes are fueling a dip in tourism and a viral panic over predictions of the next 'big one' ...