Bibliographic citations
Quispe, M., (2010). Preliminary analysis for evaluation of local site effects in Lima city, Peru from strong ground motion data by the spectral inversion method [National Graduate Institute for Policy Studies]. https://renati.sunedu.gob.pe/handle/sunedu/3163121
Quispe, M., Preliminary analysis for evaluation of local site effects in Lima city, Peru from strong ground motion data by the spectral inversion method []. JP: National Graduate Institute for Policy Studies; 2010. https://renati.sunedu.gob.pe/handle/sunedu/3163121
@mastersthesis{renati/3367,
title = "Preliminary analysis for evaluation of local site effects in Lima city, Peru from strong ground motion data by the spectral inversion method",
author = "Quispe Gamero, Mileyvi Selene",
publisher = "National Graduate Institute for Policy Studies",
year = "2010"
}
Local site, propagation path and source effects in observed strong motion records are separated by the spectral inversion method proposed by Iwata and Irikura (1986, 1988) to examine the relation between local subsurface conditions and the local site amplifications in the frequency range from 0.5 to 10 Hz. S-wave portions of accelerograms in horizontal components observed at 5 stations for 11 events along the Pacific coast of Lima city, Peru are analyzed. These events are superficial and intermediate earthquakes with local magnitudes from 4.0 to 5.7 and with hypocentral distances from 40 to 180 km. In the spectral inversion, it is assumed that the site amplification factor at a reference station CLDCIP is the same as that of the theoretical transfer function of S-waves to the soil model whose bottom layer has an S-wave velocity of around 780 m/s. The factors of site amplification Gj(f) obtained in the present study are compared with the results obtained by Cabrejos (2009) for stations CSM, CAL, MOL and CDLCIP employing the standard spectral ratio (SSR) method, which support our results especially at frequencies below 5 Hz. QS-value obtained shows frequency dependency of the form QS(f)=80.4f0.63. In addition, the influence of non-linearity on the site response is evaluated during the Pisco earthquake which it is concluded that nonlinear response of the soils was not detected at acceleration levels below 115.2 gal (the maximum peak ground acceleration recorded in Lima city) during this strong ground motion. The study also proposed relationships between the amplifications with average S-wave velocity in top 30 meters of the S-wave profiles for some stations at each frequency.
File | Description | Size | Format | |
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QuispeGameroMS-Dr.pdf | Trabajo de investigación | 2.33 MB | Adobe PDF | ![]() View/Open |
Autorizacion.pdf Restricted Access | Autorización del registro | 171.35 kB | Adobe PDF | View/Open Request a copy |
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