On the Strong Ground Motion Attenuation in Spain

Mézcua, J.; Blanco, Rosa M. García; Rueda, Juan

doi:10.1785/0120070169

Cited by 15 publications

(17 citation statements)

References 22 publications

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“…The analysis of strong ground attenuation performed in Mezcua et al (2008) and García Blanco (2009) provides specific ground motion models for Spain. Besides that we also consider those European relations that may be applicable to the Spanish data, such as those presented by Sabetta and Pugliese (1996) and those recently published by Akkar and Bommer (2010), which embrace those previously published by Ambraseys et al (2005).…”

Section: Discussionmentioning

confidence: 99%

“…This apparent contradiction is the result of using intensity data from several earthquakes in which either the intensity assignment was overestimated or the intensity scale used was not known and different relationships were obtained. Furthermore, the analysis done by Mezcua et al (2008) of the two biggest earthquakes (I max C IX) recorded in two so-considered different attenuation zones-the south (December 25, 1884 Andalucian earthquake) and the eastern (March 21, 1829 Torrevieja earthquake)-shows an identical slope of the median of the distances for each seismic intensity value. This fact may be interpreted as proof that both regions have the same attenuation of the seismic intensity.…”

Section: Strong Ground Motion Characteristicsmentioning

confidence: 97%

“…In a recent study, Mezcua et al (2008) concluded that for mainland Spain only one attenuation law may be used, in contrast with the attenuation derived from isoseismal maps where at least three regions were considered (Martín 1984;López Casado et al 2000a). This apparent contradiction is the result of using intensity data from several earthquakes in which either the intensity assignment was overestimated or the intensity scale used was not known and different relationships were obtained.…”

Section: Strong Ground Motion Characteristicsmentioning

confidence: 99%

“…Using 149 shocks recorded in Spain, Mezcua et al (2008) and García Blanco (2009) processed the PGA values in the epicentral distance range 10-100 km to obtain empirical attenuation relationships valid for the whole country. The ground-motion model selected in this study as given by García Blanco (2009) in terms of epicentral distance D is: ln PGA ¼ À0:2368 þ 1:3285M À 1:0749 ln D with r = 0.76.…”

Section: Strong Ground Motion Characteristicsmentioning

confidence: 99%

See 3 more Smart Citations

A new probabilistic seismic hazard study of Spain

2011

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In this paper, we present a probabilistic seismic hazard analysis (PSHA) for mainland Spain that takes into account recent new results in seismicity, seismic zoning, and strong ground attenuation not considered in the latest PSHA of the Spanish Building Code. Those new input data have been obtained as a three-step project carried out in order to improve the existing hazard map for mainland Spain. We have produced a new earthquake catalogue for the area, in which the earthquakes are given in moment magnitude through specific deduced relationships for our territory based on intensity data (Mezcua et al. in Seismol Res Lett 75:75-81, 2004). In addition, we included a new seismogenetic zoning based on the recent partial zoning studies performed by different authors. Finally, as we have developed a new strong ground motion model for the area García Blanco (2009), it was considered in the hazard calculation together with other attenuations gathered from different authors using data compatible with our region. With this new data, a logic tree process is defined to quantify the epistemic uncertainty related to those parts of the process. A sensitivity test has been included in order to analyze the different models of ground motion and seismotectonic zonation used in this work. Finally, after applying a weighting scheme, a mean hazard map for PGA, based on rock type condition for 10% exceedance probability in 50 years, is presented, including 15th and 85th percentile hazard maps. The main differences with the present official building code hazard map are analyzed.

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Section: Discussionmentioning

confidence: 99%

Section: Strong Ground Motion Characteristicsmentioning

confidence: 97%

Section: Strong Ground Motion Characteristicsmentioning

confidence: 99%

Section: Strong Ground Motion Characteristicsmentioning

confidence: 99%

See 2 more Smart Citations

A new probabilistic seismic hazard study of Spain

2011

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“…On Figure 4, the points corresponding to the LOR station have been represented at an epicentral distance of 5 km; they could be placed at shorter distances if we consider the rupture dimensions and compute the distance to the surface projection of the rupture (Joyner-Boore distance). Recorded PGA values from the IGN network with respect to epicentral distance (red triangles for EW components, yellow triangles for NS components) and compared to four GMPEs (Cabañas et al 1999, Tapia et al 2007, Mezcua et al 2008, Akkar & Bommer 2010 in Spain. Also from published relations between intensity and PGA (Wald et al 1999, Souriau, Belvaux -8 2006, intensity VII corresponds to a PGA of 0.07g to 0.23g.…”

Section: Strong Motion Recordings Of the Lorca Earthquakementioning

confidence: 99%

Recorded Ground Motion and Estimated Soil Amplification for the 11 May 2011 Lorca Earthquake

et al. 2015

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On 11 May 2011 an earthquake of magnitude 5.2 ( M w) hit the Murcia region of Spain causing significant damage to buildings in the town of Lorca. Accelerograms were recorded by stations of the Instituto Geográfico Nacional, and high-amplitude ground motions were observed at the Lorca station, with a peak ground acceleration (PGA) of 0.37 g. The contribution of a near-field component of ground motion is shown in time histories and in elastic response spectra. Features of near-field ground motions such as directivity could have significantly enhanced the ground shaking caused by this event. Local amplification effects in Lorca were investigated by the H/V spectral ratio technique and an array method. Information obtained from the geophysical field survey allowed the definition of representative soil columns and site classifications according to Eurocode 8. Modeling of site response is conducted for an example location. The aftershocks recorded at different sites confirm the soil amplification at these locations.

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Consistency of ground-motion predictions from the past four decades: peak ground velocity and displacement, Arias intensity and relative significant duration

Douglas

2012

Bull Earthquake Eng

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Due to the limited observational datasets available for the derivation of groundmotion prediction equations (GMPEs) there is always epistemic uncertainty in the estimated median ground motion. Since the quality and quantity of strong-motion datasets is constantly increasing it would be expected that the epistemic uncertainty in ground-motion prediction (related to lack of knowledge and data) is decreasing. This article is a continuation of the study of Douglas (2010) for ground-motion parameters other than peak ground acceleration (PGA) and elastic response spectral acceleration (SA). The epistemic uncertainty in the prediction of peak ground velocity and displacement, Arias intensity and relative significant duration is investigated by plotting predictions from dozens of GMPEs for these parameters against date of publication for three scenarios. In agreement with the previous study, all ground-motion parameters considered show high epistemic uncertainty (often even higher than previously reported for PGA and SA), suggesting that research efforts for the development of GMPEs for these parameters should continue and that it is vital that this uncertainty is accounted for in seismic hazard assessments. The epistemic uncertainty in the prediction of relative significant duration, however, appears to be much lower than any other strong-motion parameter, which suggests that currently available GMPEs for this intensity measure are sufficiently mature.

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On the Strong Ground Motion Attenuation in Spain

Cited by 15 publications

References 22 publications

A new probabilistic seismic hazard study of Spain

A new probabilistic seismic hazard study of Spain

Recorded Ground Motion and Estimated Soil Amplification for the 11 May 2011 Lorca Earthquake

Consistency of ground-motion predictions from the past four decades: peak ground velocity and displacement, Arias intensity and relative significant duration

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