Selection and ranking of ground motion models for seismic hazard analysis in the Pyrenees
The issue addressed in this paper is the objective selection of appropriate ground motion models for seismic hazard assessment in the Pyrenees. The method of Scherbaum et al. (2004a) is applied in order to rank eight published ground motion models relevant to intraplate or to low deformation rate contexts. This method is based on a transparent and data-driven process which quantifies the model fit and also measures how well the underlying model assumptions are met. The method is applied to 15 accelerometric records obtained in the Pyrenees for events of local magnitude between 4.8 and 5.1, corresponding to moment magnitudes ranging from 3.7 to 3.9. Only stations at rock sites are considered. A total of 720 spectral amplitudes are used to rank the selected ground motion models. Some control parameters of these models, such as magnitude and distance definitions, may vary from one model to the other. It is thus important to correct the selected models for their difference with respect to the magnitude and distance definitions used for the Pyrenean data. Our analysis shows that, with these corrections, some of the ground motion models successfully fit the data. These are the Lussou et al. (2001) and the Berge-Thierry et al. (2003) models. According to the selected ground motion models, a possible scenario of a magnitude 6 event is proposed; it predicts response spectra accelerations of 0.08–0.1 g at 1 Hz at a hypocentral distance of 10 km.
Key wordsseismic hazard ground motion models acceleration response spectra Pyrenees
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- Abrahamson NA, Shedlock KM (1997) Overview. Seismol Res Lett 68:9–23Google Scholar
- Abrahamson NA, Silva WJ (1997) Empirical response spectral attenuation relations for shallow crustal earthquakes. Seismol Res Lett 68:94–127Google Scholar
- Atkinson GM, Boore DM (1997) Some comparison between recent ground-motion relations. Seismol Res Lett 68:24–40Google Scholar
- Boore DM, Joyner WB, Fumal TE (1997) Equations for estimating horizontal response spectra and peak acceleration from western North American earthquakes: a summary of recent works. Seismol Res Lett 68:128–153Google Scholar
- Campbell W, Bozorgnia Y (2003) Updated near source ground motion relations for horizontal and vertical components of peak ground acceleration, peak ground velocity and pseudo-absolute acceleration response spectra. Bull Seismol Soc Am 93:314–331, Errata: vol. 93 p. 1413, vol. 94. p 2417Google Scholar
- Campillo M, Plantet JL, Bouchon M (1985) Frequency-dependent attenuation in the crust beneath central France from L g waves: data analysis and numerical modelling. Bull Seismol Soc Am 75:1395–1411Google Scholar
- Drouet S, Chevrot S, Cotton F, Souriau A (2006) Joint inversion of seismic moments, attenuation parameters and site effects from the French accelerometric data. EGU Meeting, 2–7 April 2006, Vienna, AustriaGoogle Scholar
- Lambert J, Levret-Albaret A (1996) Mille ans de séismes en France. Ouest Editions, Presses Académiques, p 80Google Scholar
- Reiter L (1990) Earthquake Hazard Analysis: Issues and Insights. Columbia University Press, New York, p 254Google Scholar
- Sabetta F, Pugliese A (1996) Estimation of ground motion and simulation of Nonstationary earthquake ground motions. Bull Seismol Soc Am 86:337–352Google Scholar
- Scholz CH, Aviles CA, Wesnousky SG (1986) Scaling differences between large intraplate and interplate earthquakes. Bull Seismol Soc Am 76:65–70Google Scholar
- Steidl JH, Tumarkin AG, Archuleta RJ (1996) What is a reference site? Bull Seismol Soc Am 86:1733–1748Google Scholar