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Published on: February 13, 2015
Riesgo de terremoto en Nueva Inglaterra
Science (New York, N.Y.)
|January 14, 1977
Resumen
El sur de Nueva Inglaterra experimentó una mayor actividad sísmica entre 1725 y 1824 que en el siglo siguiente. Este análisis de riesgo sísmico estima un período de retorno de 25 años para los terremotos de intensidad VI+.
Área de la Ciencia:
- Sismología Sismología Sismología.
- Análisis de riesgos de terremotos Análisis de riesgos de terremotos.
- La geofísica es la geofísica.
Sus antecedentes:
- Se analizaron datos sísmicos históricos para el sur de Nueva Inglaterra desde 1725 hasta 1974.
- Las ocurrencias de terremotos en la región mostraron variaciones temporales, con una mayor actividad entre 1725 y 1824.
Objetivo del estudio:
- Para calcular los períodos de retorno de terremotos y las probabilidades de ocurrencia para el sur de Nueva Inglaterra.
- Para evaluar el riesgo sísmico teniendo en cuenta los datos históricos de terremotos.
Principales métodos:
- Análisis de los datos sísmicos disponibles que abarcan los años 1725-1974.
- Cálculo de los tiempos medios de interocurrencia de los terremotos de diferentes intensidades.
Principales resultados:
- La actividad sísmica en el sur de Nueva Inglaterra no fue constante, exhibiendo tasas más altas en el período temprano (1725-1824).
- El período estimado de retorno para los terremotos de intensidad VI o mayor es de 25 años.
- El período estimado de retorno para los terremotos de intensidad VIII o mayor es de 130 años.
Conclusiones:
- Las variaciones temporales en la actividad sísmica introducen incertidumbres significativas en los cálculos de riesgo de terremotos.
- El estudio proporciona estimaciones cuantitativas para los períodos de retorno de terremotos en el sur de Nueva Inglaterra.
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