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Co-sísmica deslizamiento de impacto y la longitud de la ruptura producida por el 2001 Ms 8.1 terremoto de Kunlun
Aiming Lin1, Bihong Fu, Jianming Guo
1Institute of Geosciences, Faculty of Science, Shizuoka University, 836 Ohya, Shizuoka 422-8529, Japan. slin@ipc.shizuoka.ac.jp
Science (New York, N.Y.)
|June 18, 2002
Resumen
El terremoto de Kunlun Central de 2001 causó un récord de 400 km de ruptura de la superficie con 16,3 m de deslizamiento. Este significativo movimiento de deslizamiento en la falla de Kunlun demuestra el Tíbet.
Área de la Ciencia:
- La geofísica es la geofísica.
- La tectónica es la tectónica.
- Sismología Sismología Sismología.
Sus antecedentes:
- La meseta tibetana es tectónicamente activa debido a la colisión en curso entre las placas de la India y Eurasia.
- Comprender el comportamiento de las fallas es crucial para la evaluación del riesgo sísmico en la región.
Objetivo del estudio:
- Para analizar las características de la ruptura superficial del terremoto de Kunlun Central de 2001.
- Investigar las implicaciones de la longitud y el desplazamiento de la ruptura del terremoto en la tectónica regional.
Principales métodos:
- Investigaciones de campo de la zona de ruptura de la superficie del terremoto.
- Análisis de datos sísmicos para determinar la magnitud y las características de los terremotos.
Principales resultados:
- El terremoto de Kunlun Central (Ms 8.1) generó una ruptura de superficie de unos 400 km de largo.
- El desplazamiento máximo de deslizamiento lateral izquierdo alcanzó los 16,3 metros, el más grande reportado para rupturas de superficie co-sísmicas.
- El evento ocurrió a lo largo de la falla activa de Kunlun en el norte del Tíbet.
Conclusiones:
- La ruptura extensa y el gran desplazamiento indican el papel significativo de la falla de Kunlun para acomodar las fuerzas tectónicas regionales.
- Las características del terremoto apoyan el modelo de la deformación de partición de la falla de Kunlun, lo que lleva a la extrusión hacia el este del Tíbet.
- Esto acomoda la continua penetración hacia el norte de la placa india en la placa euroasiática.
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