Before embarking on a 6-week voyage to scan for Cascadia’s megathrust fault, the research team had to quarantine for two weeks in a hotel.

To find out how volcanoes in the Pacific Ocean influence earthquakes and tsunamis, a team of scientists listens for ‘echoes’ from under the sea.

Geoscientists estimate that a mountain slope could collapse into Prince William Sound within a year, and likely within 20 years, triggering devastating waves.

A new study looks at why the 2011 Tohoku tsunami off Japan was unexpectedly huge.

Tightly packed sediments help the Cascadia Subduction Zone generate large earthquakes, and could boost its ability to trigger a large tsunami.

Scientists probing under the seafloor off Alaska have mapped a geologic structure that they say signals potential for a major tsunami in an area that normally would be considered benign.

A new pilot program led by the Lamont-Doherty Earth Observatory aims to provide earlier and more accurate warnings of damaging ground-shaking from earthquakes and the imminent arrival of tsunamis.

For all of its violent destruction, the earthquake that struck Haiti on Jan. 12, 2010, hardly scratched the surface of the island. But scientists now say they have found some of the best clues to understanding the quake under water.

The largest ever recorded earthquake in Japan’s history has triggered a sequence of events that have killed thousands, crushed and submerged cities and towns and left a financial toll that will take years for an already struggling economy to recover. Videos and stories slowly began to emerge as the sun rose in Japan the day… read more