GLY 101LEC Lecture Notes - Lecture 9: Epicenter, Seismometer, Subduction
26 Sep 2018
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Document Summary
Earthquakes: the shaking of the earth"s crust caused by a release of energy. Earthquake belts: 95% of energy released by earthquakes are from a few relatively narrow zones that wind around the globe. Tectonic earthquakes: the release of stress built up between two crustal plates. (#1 cause) Almost all earthquakes are caused by plate tectonics (#1 cause) Collapse earthquakes (#3 cause)-rocks fall down or landslides. Largest earthquake in the world was in chile: Caused damage in hawaii, japan, the philippines, and the west coast of us since they are along the pacific rim. Earthquake: a slip on a fault plane causing rapid release of energy. Seismic waves: energy moving outward from the focus of the earthquake. Focus: location of initial slip on the fault; the origin of the earthquake; point in earth where rocks first broke. Epicenter: spot on earth"s surface directly above the focus.
