PORTLAND, Ore. (KOIN) – A new study mapping the Cascadia Subduction Zone is giving scientists clues about the state of the ...

Other fault lines have small earthquakes “going off all the time” which help researchers map those zones; however, the Cascadia Subduction Zone is “very quiet,” making it difficult to ...

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. West Coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward shore.

The Cascadia Subduction Zone could cause the next major earthquake that could destroy parts of the West Coast. The zone extends along 600 miles of the ocean floor from norther Cali to Canada.

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. West Coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward shore.

A megasplay fault branches upward from the subduction zone, and in the event of "The Big One," would raise the seafloor, displacing a massive amount of water closer to the coast.

It’s the 323rd anniversary of the last Cascadia Subduction Zone earthquake.We spend a fair amount of time thinking about the ‘Big One’ (and the ‘Really Big One’) in the Pacific Northwest.

Hidden off the US Western shore, beneath the Pacific Ocean, is the Cascadia Subduction Zone. This fault is capable of generating earthquakes larger than magnitude 8 that can be felt hundreds of ...

The Cascadia subduction zone stretches about 600 miles (960 kilometers) ... Megathrust quakes occur repeatedly along subduction fault lines as energy gets stored up and then released.

Sub-seafloor map of the Cascadia Subduction Zone, showing depth of the fault between the eastward-moving Juan de Fuca place and the North American plate. Yellow/orange indicates shallow depths ...