Tsunami 2004 Great Sumatra Earthquake l Tsunami Death

Tsunami

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

Dec 26 2004 Sumatra Earthquake 00: 58: 53 UTC • • • Magnitude 9. 0 Latitude: 3. 3 N Longitude: 95. 96 E Depth: 30 km Tsunami

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

EAS/ENGR 122 Earthquake! www. eas. cornell. edu http: //www. geo. cornell. edu/geology/classes/brown/eas 122 home 05. htm

National Earthquake Information Center (US Geological Survey) http: //neic. usgs. gov/neis/bulletin/neic_slav. html 1900 - present

Recent Events

Seismicity: Is there a pattern?

Plate Tectonics

Earthquake Geology San Andreas Fault, CA

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 http: //www. geodesy. cwu. edu/index. html? page=http%3 A//www. geodesy. cwu. edu/pubs/p_37. html

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