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Earthquakes Around the World. U.S. Geological Survey. Walter D. Mooney Senior Research Geophysicist USGS, Menlo Park, CA. Seismicity of the World. Plate Tectonic Theory. Global Seismic Hazard Map. Importance of Engineering. Saving Lives through Better Standards.
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Earthquakes Around the World U.S. Geological Survey Walter D. Mooney Senior Research Geophysicist USGS, Menlo Park, CA
Importance of Engineering Saving Lives through Better Standards. Amplification of unconsolidated vs consolidated materials.
Building Safer Structures Building Safer Structures
Examples of Earthquakes in areas of High Seismic Risk • Bhuj, India, January 26th 2001 • Kocaeli, Turkey, August 17th 1999 • Bam, Iran, December 26th 2003 • Niigata, Japan, October 23rd 2004 • Chi-Chi, Taiwan, 1999 • San Francisco, 1906
Bhuj Earthquake, India: Mw = 7.7 • Only 0.5% global seismic moment release • Bhuj, India, 2001 • 20.000 lives lost • 200.000 people injured • nearly 400.000 houses destroyed
The Izmit Earthquake, Turkey: Mw = 7.4 Implications for Earthquake Risk from Historical Earthquakes
Izmit Earthquake, Turkey • Over 18,000 deaths • 44,000 people injured • Nearly 300,000 homes either damaged or collapsed Regional Tectonics
2003/12/26 Ms6.6 Bam, Iran • 15,000 deaths • ~70% buildings destroyed or damaged
San Francisco Earthquake, 1906
Marina district of San Francisco built on “fill land” after 1906 earthquake
1999 Chi-Chi Earthquake, Taiwan: Mw = 7.6 Modified after Lee,1994 and Teng, 1990)
Chi-Chi Earthquake, Taiwan Historic Seismicity with depth