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:	Leyton,Felipe, Montalva,Gonzalo, Ramírez,Paola
Lenguaje:	English
Publicado:	Universidad Católica de la Santísima Concepción 2012
Materias:	seismic microzonation Concepción geology microtremors' HVSR
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132012000100004
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spelling	oai:scielo:S0718-281320120001000042012-08-27A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patternsLeyton,FelipeMontalva,GonzaloRamírez,Paola seismic microzonation Concepción geology microtremors' HVSR 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.info:eu-repo/semantics/openAccessUniversidad Católica de la Santísima ConcepciónObras y proyectos n.11 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132012000100004en10.4067/S0718-28132012000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	seismic microzonation Concepción geology microtremors' HVSR
spellingShingle	seismic microzonation Concepción geology microtremors' HVSR Leyton,Felipe Montalva,Gonzalo Ramírez,Paola A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
description	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.
author	Leyton,Felipe Montalva,Gonzalo Ramírez,Paola
author_facet	Leyton,Felipe Montalva,Gonzalo Ramírez,Paola
author_sort	Leyton,Felipe
title	A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
title_short	A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
title_full	A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
title_fullStr	A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
title_full_unstemmed	A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns
title_sort	preliminary study of seismic microzonation of concepción based on microtremors, geology and damages patterns
publisher	Universidad Católica de la Santísima Concepción
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132012000100004
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A preliminary study of seismic microzonation of Concepción based on microtremors, geology and damages patterns

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