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Temblor profundo no volcánico asociado con subducción en el suroeste de Japón
1National Research Institute for Earth Science and Disaster Prevention, Tenno-dai 3-1, Tsukuba, Ibaraki, 305-0006, Japan. obara@bosai.go.jp
Science (New York, N.Y.)
|June 1, 2002
Resumen
Los temblores profundos en una región no volcánica de Japón se localizaron a lo largo de la placa del mar de Filipinas.
Área de la Ciencia:
- La geofísica es la geofísica.
- Sismología Sismología Sismología.
Sus antecedentes:
- Los temblores profundos son eventos sísmicos que ocurren a profundidades significativas dentro de la corteza terrestre.
- La comprensión de los mecanismos de generación de temblores es crucial para la evaluación del peligro sísmico.
Objetivo del estudio:
- Para identificar y localizar temblores profundos y de largo período en una región no volcánica del suroeste de Japón.
- Para investigar la relación entre la distribución de los temblores y la placa subductora del Mar de Filipinas.
Principales métodos:
- Análisis de datos sísmicos para detectar y localizar temblores profundos.
- Mapeo geofísico de la geometría y la profundidad de la placa subductora.
Principales resultados:
- Se identificaron temblores profundos de largo período a través de una huelga de 600 kilómetros de la placa subductora del Mar de Filipinas.
- Los temblores ocurrieron a una profundidad promedio de 30 kilómetros, cerca de la discontinuidad de Mohorovic.
- Los temblores individuales persistieron durante varias semanas.
Conclusiones:
- La distribución espacial de los temblores sugiere un vínculo con la losa de subducción.
- La generación de líquidos de los procesos de deshidratación dentro de la losa es una causa potencial de estos temblores profundos.
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