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

Tremors beneath Northern California show hidden plate movement, helping scientists better understand where future big ...

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

Schematic figure of the subduction zone underneath the Kanto region (left) in Japan and the spatial distribution of magnitude 2 to 6 earthquakes on the subduction zone at 60 to 70 kilometers below ...