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New Considerations about Chile's Seismic Hazard

This article discusses updated findings related to Chile's seismic activity, including fault sizes, recurrence intervals, attenuation relationships, and recent earthquakes. The article also discusses the potential impact of earthquakes on different regions of Chile and highlights the importance of earthquake readiness.

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New Considerations about Chile's Seismic Hazard

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  1. New Considerations about Chile’s Seismic Hazard Sergio. Barrientos Scientific Director Servicio Sismológico, Universidad de Chile sbarrien@dgf.uchile.cl Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  2. Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  3. Energy Released by Earthquakes Page 3

  4. Data from Engdahl and Villaseñor (2003). Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  5. Wadati-Benioff Zone Barazangi and Isacks (1976) Engdhal and Villaseñor (2003) Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  6. 1922 Beck et al, 1998 Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  7. Seismic Sources in Chile Corticales Sismos Prisma Thrust costa fosa Outerise Intraplaca prof. Intermedia Page 7

  8. Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  9. Barrientos (1997) Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  10. Chillan, 1939 Beck et al., (1998) Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  11. Fault size: Length: 1000 km Width: variable 120-150 km Average displ: 17 m Maximum displ: 35-40 m Recurrence: At least 500-yr Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  12. Pre-1960 Events (Cisternas et al., 2005) Page 12

  13. Dec, 1949, Magallanes Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  14. Trench 2004 Outer rise 1939, 1950, 2005 Trench Illapel, 1997 Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  15. M=7.5 every 110 yr Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  16. Tarapacá, 2005 January 7, 2003 Mw 5.9 ES(1) ES(2) Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  17. Tarapacá, 2005

  18. Attenuation relationships Barrientos (1981) Saragoni et al. Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  19. Montessus de Ballore Conference Santiago, Chile, Nov. 2006

  20. Martin (1991) Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  21. Brief Update of the Earthquakes in Tocopilla Mw= 7.7 and Aysén Mw= 6.2 Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  22. Graber (1997) Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  23. Coseismic Displacement, Antofagasta 30 Julio 1995 Mw=8.0 De Louis et al., 1997 Melbourne et al.., 2002 Page 23

  24. Coseismic Displacement, Antofagasta 30 Julio 1995 Mw=8.0 Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  25. Coseismic Displacement, Tocopilla 14 Nov 2007 Mw=7.7 Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  26. Observatory Earthquake Readiness Workshop , La Serena Dec. 2007

  27. AYSÉN Marco Tectónico J. Cembrano (2007)

  28. Evolución de la Sismicidad 5.2 21 Apr 06 M= 6.2 4.4 4.8 5.5 5.1 4.5 5.6 Page 28

  29. Caída de Rocas, Deslizamientos y Tsunami 21 Abril 2007

  30. Generacion de Tsunami Page 30

  31. Punta Tortuga

  32. Epicenters and Focal Mechanisms

  33. Thanks a lot for your attention Observatories Earthquake Readiness Workshop , La Serena Dec. 2007

  34. Murdie (1993) VI Congreso Chileno de Geotecnia Valparaíso, Nov. 2007

  35. VI Congreso Chileno de Geotecnia Valparaíso, Nov. 2007

  36. VI Congreso Chileno de Geotecnia Valparaíso, Nov. 2007

  37. VI Congreso Chileno de Geotecnia Valparaíso, Nov. 2007

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