GEOLOGY 1 Lecture Notes - Lecture 31: East Los Angeles College, Subduction, Submarine Landslide
Document Summary
Japanese word for a large harbor wave . Triggered by earthquake, submarine volcanic explosion, underwater landslide, asteroid impact. 1960 chile earthquake, killed 61 people in hawaii. Mega tsunami, form asteroid impact, produces a wave that is 100 times higher than the largest tsunami produced by an example. Tsunamis produced by earthquakes are by far the most common. December 26, 2004, within a few hours, close to 250,000 people died. Then source of this tsunami was the largest earthquake in the world being 9. 1. Movement of the seafloor by triggering either a vertical displacement or landslide. When an earthquake uplifts the seafloor close to land, both distant and local tsunamis may be produced. Distant tsunami: travels out across the deep ocean at high speed for thousands of kilometers to strike remote shorelines with very little loss of energy. Local tsunami: heads in the opposite direction toward the nearby land and arrives quickly following an earthquake.
