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Earthquakes Around the World U.S. Geological Survey Walter D. Mooney Senior Research Geophysicist USGS, Menlo Park, CA.

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Presentation on theme: "Earthquakes Around the World U.S. Geological Survey Walter D. Mooney Senior Research Geophysicist USGS, Menlo Park, CA."— Presentation transcript:

1 Earthquakes Around the World U.S. Geological Survey Walter D. Mooney Senior Research Geophysicist USGS, Menlo Park, CA

2 Seismicity of the World

3 Plate Tectonic Theory

4 Global Seismic Hazard Map

5 Saving Lives through Better Standards. Importance of Engineering Amplification of unconsolidated vs consolidated materials.

6 Building Safer Structures

7 Examples of Earthquakes in areas of High Seismic Risk  Bhuj, India, January 26 th 2001  Kocaeli, Turkey, August 17 th 1999  Bam, Iran, December 26 th 2003  Niigata, Japan, October 23 rd 2004  Chi-Chi, Taiwan, 1999  San Francisco, 1906

8 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

9 Bhuj, India

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11 Implications for Earthquake Risk from Historical Earthquakes The Izmit Earthquake, Turkey: Mw = 7.4

12 Izmit Earthquake, Turkey

13 Regional Tectonics  Over 18,000 deaths  44,000 people injured  Nearly 300,000 homes either damaged or collapsed

14 The Bam Earthquake, Iran: Mw = 6.6

15 2003/12/26 Ms6.6 Bam, Iran  15,000 deaths  ~70% buildings destroyed or damaged

16 Niigata Earthquake, Japan : Mw = 6.6

17 Niigata Earthquake, Japan

18 San Francisco Earthquake, 1906

19 Marina district of San Francisco built on “fill land” after 1906 earthquake

20 Modified after Lee,1994 and Teng, 1990) 1999 Chi-Chi Earthquake, Taiwan: Mw = 7.6

21 Chi-Chi Earthquake, Taiwan Historic Seismicity with depth

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