Ambient Noise Spectral Ratio in Site Effect Estimation in La Mesa de Macaracas, Panama

Figure 5

(a) Raw signals of ambient noise in the three components obtained at the SS-10 station. (b) Result of the removal of transient events, analysis of the amplitude thresholds and the spectral ratio, and adjustment to baseline. (c) Graph of the spectral ratio as a function of frequency as a result of the Nakamura analysis with maximum and minimum values (gray dotted lines), with a continuous gray vertical line that represents the predominant frequency of the soil. (d) Average spectra (AS) obtained for each component.

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