All articles tagged with #megathrust
Researchers drilling at the Japan Trench uncovered a roughly 100-foot pelagic clay layer that formed a narrow, ultra-weak fault guiding the megathrust rupture to near the seafloor, explaining the unprecedented shallow slip and enormous tsunami of the 2011 Tōhoku earthquake; the finding, published in Science, suggests similar weak-clay layers could influence ruptures in other subduction zones.
Despite being one of the strongest earthquakes ever recorded (8.8 magnitude) near Russia's Kamchatka Peninsula, the resulting tsunami was relatively small and less destructive than feared, due to factors such as the earthquake's depth, the nature of tectonic plate movements, local seafloor shapes, and the presence of early warning systems. These elements influenced the size and impact of the tsunami, preventing the catastrophic damage seen in past events like the 2004 Indian Ocean tsunami.