Conceptos Basicos Terremotos y Tsunamis Sergio Barrientos
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Transcript of Conceptos Basicos Terremotos y Tsunamis Sergio Barrientos
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Sergio Barrientos Director Científico Servicio Sismológico Universidad de Chile [email protected]
Terremotos en Chile
26 Marzo 2012 UNESCO Workshop Santiago - Chile
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World Seismicity 0-70 km 70-300 km 300-700 km
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Vigny, 2008
Marco Tectónico
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Subduction Factory
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Thrust Prism
Outerise
Intraplate, Intermediate depth
Shallow crustal
Seismogenic Sources in Chile
fosa
cost
a
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Large Earthquakes in Chile
Astroza and Ruiz (2010)
In general, one quake M >7 ¾ every 10 yr
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Acelerógrafos 27 Feb 2010
Ruiz et al. (2012)
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Réplicas
Lange et al (2012)
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Slip Distributions
Shao et al., UCSB USGS Sladen, Caltech
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Ruptura 2010 Chile
Eric Kiser, Harvard
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Crustal Deformation
CAP
Fault
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Coastal Uplift
Vargas et al. (2010)
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Crustal Deformation
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Vigny et al, 2011
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Vigny et al., 2011 Lorito et. al., 2011
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Generación de Tsunamis
displaces a large enough volume of water. Plate slips, causing subsidence and releasing energy into water.
Overriding plate bulges under strain, causing uplift
Accumulation of stresses
Tsunami