Large subduction-zone earthquakes leave scars on the continental slope in the deep sea.

Imagine a scenario where the Pacific Northwest gets pummeled by a magnitude nine earthquake, only to have California's most ...

Northern California’s coast keeps you on alert, even on quiet days. Offshore, three tectonic plates meet near Humboldt County ...

Add Yahoo as a preferred source to see more of our stories on Google. PORTLAND, Ore. (KOIN) – A new study mapping the Cascadia Subduction Zone is giving scientists clues about the state of the fault ...

Scientists are uncovering a hidden and surprisingly complex earthquake zone beneath Northern California by tracking swarms of ...

A recent voyage got up close and personal with an underwater fault that could reshape life in the Pacific Northwest. Anne Trehu, a Professor Emeritus who worked at Oregon State University says "There ...

During an earthquake scenario with the highest level of subsidence, or land sink, the area at risk of flooding would expand by 116 square miles. Among the areas at risk after a megaquake along the ...

Seismic tremors reveal a shallow fragment of ancient tectonic plate beneath Northern California, helping explain damaging ...

(a) Geological units and earthquake distribution of an oceanic subduction zone. The orange shadow beneath the volcanic arc represents partially molten areas and magma channels. (b) Thermal structure ...

Last week, about 60 miles off the coast near Ferndale, California, the tectonic plates shifted under the Pacific Ocean, sending seismic waves through the ocean floor that radiated onto land and were ...