A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
We perform microtremors measurements at Concepción and compute the predominantfrequency using horizontal-to-vertical spectral ratio (HVSR). We compare these results with the surface geology and several geotechnical surveys existing in the region, enabling a general characterization of the area. We p...
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| Autores principales: | , , |
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| Lenguaje: | English |
| Publicado: |
Universidad Católica de la Santísima Concepción
2012
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132012000100004 |
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| Sumario: | We perform microtremors measurements at Concepción and compute the predominantfrequency using horizontal-to-vertical spectral ratio (HVSR). We compare these results with the surface geology and several geotechnical surveys existing in the region, enabling a general characterization of the area. We present and complement these results with observations of damage produced by the Mw 8.8 Maule 2010 earthquake. Preliminary results show the presence of fine-grained materials in the area characterized by very low predominant frequency (lower than 1.5 Hz), which might explain the extensive damage observed at Concepción and surroundings. |
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