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Restricciones en la dinámica de los terremotos lentos de un enjambre en el centro de Italia
1Dipartimento di Scienze della Terra, Universita di Camerino, Camerino (MC), Italy. Istituto Nazionale di Fision Nucleare-Laboratori Nazionali del Gran Sasso (LNGS), L'Aquila, Italy. Dipartimento di Fisica, Universita di L'Aqui.
Science (New York, N.Y.)
|December 11, 1999
Resumen
Los investigadores han observado terremotos lentos en Italia. El momento sísmico de estos eventos se escala con la raíz cuadrada de su tiempo de subida, lo que sugiere una propagación lenta de la ruptura similar a la difusión del calor.
Área de la Ciencia:
- La geofísica es la geofísica.
- Sismología Sismología.
Sus antecedentes:
- Los terremotos lentos son eventos sísmicos caracterizados por una duración prolongada de la ruptura.
- Comprender su mecánica es crucial para la evaluación del peligro sísmico.
Objetivo del estudio:
- Para analizar las características de los terremotos lentos agrupados en el centro de Italia.
- Investigar la relación entre el momento sísmico y el tiempo de elevación de estos eventos.
Principales métodos:
- Utilizó un interferómetro geodésico para registrar datos sísmicos.
- Analizó los tiempos de aumento de tensión y los momentos sísmicos de los eventos registrados.
Principales resultados:
- Se registraron varios terremotos lentos agrupados.
- Se observó que el momento sísmico escala con la raíz cuadrada del tiempo de subida.
- Los tiempos de aumento de la tensión variaron de decenas a miles de segundos.
Conclusiones:
- La ley de escala observada desafía las suposiciones tradicionales de modelado de fallas.
- Los resultados apoyan un modelo de propagación lenta de la ruptura análoga a la difusión del calor.
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