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Terremoto en Indonesia: riesgo de terremoto por estrés co-sísmico
John McCloskey1, Suleyman S Nalbant, Sandy Steacy
1School of Environmental Sciences, University of Ulster, Coleraine, County Derry BT52 1SA, UK. j.mccloskey@ulster.ac.uk
Nature
|March 18, 2005
Resumen
El terremoto de Sumatra-Andamán de 2004 aumentó el estrés sísmico en la zanja de Sunda y la falla de Sumatra, aumentando los riesgos de terremotos y tsunamis. Esto pone de relieve la necesidad urgente de un sistema de alerta de tsunamis en el Océano Índico.
Área de la Ciencia:
- La geofísica es la geofísica.
- Sismología Sismología Sismología.
- Ciencia del Tsunami Ciencia del Tsunami
Sus antecedentes:
- El terremoto de Sumatra-Andamán de 2004 y el posterior tsunami causaron una pérdida catastrófica de vidas.
- Existen preocupaciones con respecto a posibles terremotos desencadenados en estructuras tectónicas adyacentes.
Objetivo del estudio:
- Para calcular la distribución del estrés cosísmico en la zona de subducción de la zanja de Sunda y la falla de Sumatra.
- Para evaluar el impacto del terremoto de Sumatra-Andamán en los riesgos sísmicos regionales.
Principales métodos:
- Cálculos de esfuerzo cosísmico.
- Análisis de la transferencia de tensión a los sistemas de fallas contiguas.
Principales resultados:
- Se observó un aumento de la tensión cosísmica tanto en la zona de subducción de la zanja de Sunda como en la falla de Sumatra.
- El aumento del estrés eleva significativamente el riesgo de terremotos en la región.
Conclusiones:
- El terremoto de Sumatra-Andamán ha aumentado el riesgo de un gran terremoto en la zona de subducción y un posible tsunami.
- Los hallazgos subrayan la necesidad crítica y urgente de un sistema eficaz de alerta de tsunamis en el Océano Índico.
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