Microtremors' HVSR and its correlation with surface geology and damage observed after the 2010 Maule earthquake (Mw 8.8) at Talca and Curicó, Central Chile
Author
dc.contributor.author
Leyton, F.
Author
dc.contributor.author
Ruiz Tapia, Sergio
es_CL
Author
dc.contributor.author
Sepúlveda Valenzuela, Sergio
es_CL
Author
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Contreras, J. P.
es_CL
Author
dc.contributor.author
Rebolledo Lemus, Sofía
es_CL
Author
dc.contributor.author
Astroza Inostroza, Maximiliano
es_CL
Admission date
dc.date.accessioned
2014-02-11T19:27:04Z
Available date
dc.date.available
2014-02-11T19:27:04Z
Publication date
dc.date.issued
2013
Cita de ítem
dc.identifier.citation
Engineering Geology 161 (2013) 26–33
en_US
Identifier
dc.identifier.other
doi 10.1016/j.enggeo.2013.04.009
Identifier
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https://repositorio.uchile.cl/handle/2250/126388
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
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Nowadays, microtremors' horizontal-to-vertical spectral ratio (HVSR) has been extensively used in the estimation
of the predominant vibration frequency of soils, mainly for microzonation purposes. In the present
study, we show results from extensive microtremor measurements performed at the cities of Talca and
Curicó, Central Chile. We found a strong correlation between surface geology and microtremors' HVSR,
even in complex geological settings. Considering the damage produced by the 2010 Maule earthquake
(Mw 8.8), we also estimated high-density macroseismic intensities at these cities, with values ranging
from VI up to VIII on the MSK64 scale. We believe that themain responsible of these variations are the surface
geological conditions, also reflected in the variations of the resonance frequencies of the soils. The evidence
presented here supports the use of microtremors' HVSR in combination with surface geology to improve seismic
microzonation studies, particularly in an Andean context.
Microtremors' HVSR and its correlation with surface geology and damage observed after the 2010 Maule earthquake (Mw 8.8) at Talca and Curicó, Central Chile