000019793 001__ 19793
000019793 005__ 20170118182336.0
000019793 04107 $$aeng
000019793 046__ $$k2017-01-09
000019793 100__ $$aNozu, Atsushi
000019793 24500 $$aStrong Ground Motion Simulation of Illapel Earthquake Using Empirical Green's Functions

000019793 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019793 260__ $$b
000019793 506__ $$arestricted
000019793 520__ $$2eng$$aThe September 16th 2015 Illapel, Chile, earthquake (M w 8.4) generated a good set of aftershock data that enabled us to develop and to validate a model for synthetic ground motion generation. This study presents a methodology to generate strong ground motions based on site amplification and phase characteristics of seismic waves, and also based on a source model that was newly developed for the earthquake. The methodology includes the superposition of corrected empirical Green’s functions that consider the three effects: source, path and site. The path effects incorporate the attenuation of seismic waves between the source and the recording stations, and include both geometric spreading and inelastic attenuation. Weak motion data obtained at the strong-motion stations was used to evaluate empirical site amplification factors. For this purpose, aftershocks recorded during the first three months after the main shock were used. Furthermore, the phase characteristics of the Green’s functions were determined based on the weak motion data recorded at the stations. The source model involves two SPGAs (strong-motion pulse generation areas). The locations of the SPGAs were basically determined based on the arrival times of the velocity pulses. The SPGA sizes were chosen according to the pulse duration. The methodology was validated using observed records in terms of velocity waveforms and Fourier spectra. According to the results, the velocity waveforms including pulses were well reproduced in a frequency range of interest to structural engineering (0.2 to 1 Hz). The agreement between the simulated and measured waveforms makes this model a strong platform to assess hazard at specific sites where detailed hazard assessment is required.

000019793 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019793 653__ $$astrong ground motion, Illapel earthquake, corrected empirical Green’s functions, site effects.

000019793 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019793 720__ $$aNozu, Atsushi$$iFernandez, Claudio$$iAguirre, Paula$$iLlera, Juan Carlos De La$$iCandia, Gabriel
000019793 8560_ $$ffischerc@itam.cas.cz
000019793 8564_ $$s842380$$uhttps://invenio.itam.cas.cz/record/19793/files/4425.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4425.
000019793 962__ $$r16048
000019793 980__ $$aPAPER