“100% Exciting!”

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100% Exciting!. Izmit Turkey Seismogram. Granite (and Average Continental Crust). 6.0 km/sec. 2.5 km/sec. 3.5 km/sec. 3.0 km/sec. Differences in density and other physical properties affect the velocity of seismic waves. Oceanic Crust: P-wave Velocity = 7 km/sec Basalt. - PowerPoint PPT Presentation

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<ul><li><p>100% Exciting!</p></li><li><p>Izmit Turkey Seismogram</p></li><li><p>Differences in density and other physical properties affect the velocity of seismic waves.Granite (and Average Continental Crust)6.0 km/sec3.5 km/sec2.5 km/sec3.0 km/sec</p></li><li><p>Continental Crust:P-wave Velocity = 6 km/secGraniteOceanic Crust:P-wave Velocity = 7 km/secBasalt</p></li><li><p>Crust6-7 km/secMantle8-13 km/secOuter Core8-10 km/secInner Core10-11 km/secP-wave Velocities</p></li><li><p>speed of light in a vacuum = 300,000,000 m/s</p><p>speed of light in glass = 200,000,000 m/s </p><p>From:www.what-is-the-speed-of-light.com </p></li><li><p>SlowSlowFastFast</p></li><li><p>DDTDistanced measured in degrees from epicenter.Travel-time versus Distance Curves</p></li><li><p>DDistanced measured in degrees from epicenter.Travel-time versus Distance Curves</p></li><li><p>P-wave reflected from Core-Mantle BoundaryPcP</p></li><li><p>FastSlow</p></li><li><p>SlowFast</p></li><li><p>SlowFast</p></li><li><p>MohoAndrija MohorovicicZagreb Seismological Observatory1909</p></li><li><p>MohoAndrija MohorovicicZagreb Seismological Observatory1909</p></li><li><p>Inner Core discovered by Inge Lehmann in 1936</p><p>Copenhagen Seismological Observatory</p></li><li><p>Inner Core discovered by Inge Lehmann in 1936</p><p>Copenhagen Seismological Observatory</p></li><li><p>Low Velocity Zone in Upper Mantle</p></li><li><p>Low Velocity Zone in Upper MantleLow Velocity Zone = Asthenosphere of Plate Tectonics</p></li><li><p>Mechanism of Plate Tectonics</p></li><li><p>Crust6-7 km/secMantle8-13 km/secOuter Core8-10 km/secInner Core10-11 km/secP-wave Velocities</p></li><li><p>A Must-See Movie!</p></li></ul>