1. Non-Stability and Non-Reproducibility of Ambient Vibration HVSR Peaks in Algiers (Algeria).
- Author
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Benkaci, Nassima, Oubaiche, El Hadi, Chatelain, Jean-Luc, Bensalem, Rabah, Benouar, Djillali, and Abbes, Khadidja
- Subjects
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VIBRATIONAL spectra , *SOIL structure , *SUBWAYS - Abstract
The ambient vibration horizontal-to-vertical spectrum method (HVSR) is widely used in microzonation and structural studies, assuming stability and reproducibility of HVSR frequency peaks. A 35-day continuous HVSR monitoring performed in the suburbs of Algiers (Algeria) reveals that HVSR peaks are not always stable and reproducible both in frequency and amplitude. HVSR curves show a first peak, which varies from 0.9 to 1.8 Hz with amplitudes from 0.9 to 3.3, and a second peak from 5 to 7.7 Hz with amplitudes from 1.4 to 4. These results show that HVSR peak frequencies and amplitudes are highly sensitive to nearby anthropogenic sources. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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