Earthquakes.docx - Earthquakes Earthquake vibration of...

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Earthquakes - Earthquake – vibration of earth by a rapid release of energy (fault displacement) - Seismic waves – vibrations that propagate away from earthquake focus - Focus – location of earthquake origin within earth - Epicenter – surface location directly above focus - Elastic rebound theory: occurrence of earthquakes as a sudden release of strain progressively stored in rocks that bend until they finally break and move along a fault - Earthquakes occur at all 3 types of moving boundaries (divergent, convergent, transform) - Intermediate and deep focus earthquakes occur in Benioff zone, marking a descending oceanic plate at a subduction zone - Body waves o S and p waves
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