Tsunami. 2004 Great Sumatra Earthquake Tsunami Death Toll ~ 250,000 Tsunami Death Toll ~ 250,000.

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Presentation transcript:

Tsunami

2004 Great Sumatra Earthquake Tsunami Death Toll ~ 250,000 Tsunami Death Toll ~ 250,000

Dec Sumatra Earthquake 00:58:53 UTC Magnitude 9.0 Latitude: 3.3N Longitude: 95.96E Depth: 30 km Tsunami

Earthquakes: Questions Where? Where? When? When? How big? How big? Why? Why? How do we measure eqks? How do we measure eqks? What do eqks tell us about how the earth? What do eqks tell us about how the earth? How are eqks related to volcanoes, tsunami? How are eqks related to volcanoes, tsunami? Can we predict them? Can we predict them? What can we do about them? What can we do about them?

EAS/ENGR 122 Earthquake!

National Earthquake Information Center (US Geological Survey) present

Recent Events

Seismicity: Is there a pattern?

Plate Tectonics

San Andreas Fault, CA Earthquake Geology

Earthquake Mechanisms

Earthquake Rupture

Earthquake Surface Displacements

Plate Boundaries

Seismic Waves

Seismic Station

Seismic Waves and The Earth’s Interior

Can we predict earthquakes?

Immediate Precursors?

Slow Earthquakes Miller et al., 2002

Earthquake Engineering x

How Big? C.F. Richter

Mexico City, 1985

San Francisco, 1906

Earthquakes Volanoes Mt. Pinatubo, June 15, 1991

Earthquake Swarms: eruption imminent?

Tsunami Alaska, 1964

GPS