Earthquakes Around the World

Earthquakes Around the WorldEarthquakes Around the World

U.S. Geological Survey

Walter D. MooneySenior Research GeophysicistUSGS, Menlo Park, CA

Seismicity of the WorldSeismicity of the World

Plate Tectonic TheoryPlate Tectonic Theory

Global Seismic Hazard MapGlobal Seismic Hazard Map

Saving Lives through Better Standards.

Importance of EngineeringImportance of Engineering

Amplification of unconsolidated vs consolidated materials.

Building Safer Structures

Building Safer StructuresBuilding Safer Structures

Examples of Earthquakes in areas of High Seismic RiskExamples 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, IndiaBhuj Earthquake, India: Mw = 7.7: 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

Bhuj, India

Bhuj, India

Implications for Earthquake Risk from Historical Earthquakes

The Izmit Earthquake, TurkeyThe Izmit Earthquake, Turkey: Mw = 7.4: Mw = 7.4

Izmit Earthquake, Turkey

Izmit Earthquake, Turkey

Regional Tectonics

Over 18,000 deaths

44,000 people injured

Nearly 300,000 homes either damaged or collapsed

The Bam Earthquake, IranThe Bam Earthquake, Iran: Mw = 6.6: Mw = 6.6

2003/12/26 Ms6.6

Bam, Iran

15,000 deaths

~70% buildings destroyed or damaged

Niigata Earthquake, Japan Niigata Earthquake, Japan : Mw = 6.6: Mw = 6.6

Niigata Earthquake, Japan

San FranciscoSan FranciscoEarthquake, 1906Earthquake, 1906

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

Modified after Lee,1994 and Teng, 1990)

1999 Chi-Chi Earthquake, Taiwan: Mw = 7.61999 Chi-Chi Earthquake, Taiwan: Mw = 7.6

Chi-Chi Earthquake, Taiwan

Historic Seismicity with depth