Earthquakes

Earthquakes - Earthquakes earthquake: movement of rock...

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1 Earthquakes Earthquakes earthquake: movement of rock bodies past other fault: locus of the earthquake movement faults come at all scales, mm to separation of lithospheric plates ( e.g. , San Andreas). Elastic Rebound Elastic Rebound Stress builds up in rocks until it exceeds the strength of rock Elastic deformation is expressed in rocks between earthquakes Fig. Story 19.1 Fig. Story 19.1 Fig. Story 19.1
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2 Fig. 19.2 Fig. 19.2 Fig. 19.2 Fig. 19.2 Fig. 19.2 Fig. 19.3
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3 Earthquake terms Earthquake terms focus: site of initial rupture epicenter: point on surface above the focus Charles Ammon – P.S.U Seismology Seismology study of the propagation of mechanical energy that is released by earthquakes and explosions throughout the Earth when energy is released in this fashion, waves of motion (like the effect of a pebble tossed into a pond) move through the rocks surrounding the source of the energy (the focus). Seismograph Seismograph device used to record motion of the Earth source of the “wiggly lines” that document earthquakes and other seismic events Fig. 19.4 Fig. 19.4
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4 Fig. 19.4 Fig. Story 19.5 Seismic Waves Seismic Waves
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This note was uploaded on 11/20/2010 for the course LIR 30 taught by Professor Thornley,k during the Spring '08 term at Santa Rosa.

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Earthquakes - Earthquakes earthquake: movement of rock...

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