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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
1998
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=56837102 |
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| _version_ | 1866811754830364672 |
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| author | Raúl R. Castro |
| author_facet | Raúl R. Castro |
| contents | An empirical model for estimating horizontal acceleration Fourier spectra for the Imperial- Mexicali Valley region Raúl R. Castro Ciencias de la Tierra Imperial Attenuation relations Mexicali Valley region site specific corrections An empirical model for estimating the horizontal acceleration spectra is obtainedusing strong motion records from stations located in the Imperial Valley, Californiaand the Mexicali Valley, Baja California regions. The functional form of the modelis based on the regression relation used by Joyner and Boore (1981) to deriveattenuation relations for peak horizontal velocity and acceleration. The model adopted scales the acceleration spectra in terms of the magnitude, and the closestdistance to the surface projection of the fault that generated the earthquake. Toaccount for the effect of the local site conditions, a frequency-dependent correctionterm for each station is also incorporated in the model. The coefficients of themodel were determined using a two-stage regression procedure. The data set usedconsists of 44 events, in the magnitude range between 2.9 and 6.8, and distancesbetween 0.2 and 136 km. The dependence of the spectral amplitudes on magnitudewas tested using linear and squared dependence. The use of a squared term to scalethe amplitudes improved the accuracy of the model. In addition, the site correctionsshow a considerable variation with frequency and between sites. This observationemphasizes the importance of using site specific corrections for predicting groundmotion spectra if they are available. 1998 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56837102 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.37 |
| format | Artículo científico |
| id | redalyc_56837102 |
| language | en |
| publishDate | 1998 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | An empirical model for estimating horizontal acceleration Fourier spectra for the Imperial- Mexicali Valley region Raúl R. Castro Ciencias de la Tierra Imperial Attenuation relations Mexicali Valley region site specific corrections An empirical model for estimating horizontal acceleration Fourier spectra for the Imperial- Mexicali Valley region Raúl R. Castro Ciencias de la Tierra Imperial Attenuation relations Mexicali Valley region site specific corrections An empirical model for estimating the horizontal acceleration spectra is obtainedusing strong motion records from stations located in the Imperial Valley, Californiaand the Mexicali Valley, Baja California regions. The functional form of the modelis based on the regression relation used by Joyner and Boore (1981) to deriveattenuation relations for peak horizontal velocity and acceleration. The model adopted scales the acceleration spectra in terms of the magnitude, and the closestdistance to the surface projection of the fault that generated the earthquake. Toaccount for the effect of the local site conditions, a frequency-dependent correctionterm for each station is also incorporated in the model. The coefficients of themodel were determined using a two-stage regression procedure. The data set usedconsists of 44 events, in the magnitude range between 2.9 and 6.8, and distancesbetween 0.2 and 136 km. The dependence of the spectral amplitudes on magnitudewas tested using linear and squared dependence. The use of a squared term to scalethe amplitudes improved the accuracy of the model. In addition, the site correctionsshow a considerable variation with frequency and between sites. This observationemphasizes the importance of using site specific corrections for predicting groundmotion spectra if they are available. 1998 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56837102 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.37 |
| title | An empirical model for estimating horizontal acceleration Fourier spectra for the Imperial- Mexicali Valley region |
| topic | Ciencias de la Tierra Imperial Attenuation relations Mexicali Valley region site specific corrections |
| url | https://www.redalyc.org/articulo.oa?id=56837102 |