Assessment of the stability of H/V spectral ratios from ambient noise and comparison with earthquake data in the Cologne area (Germany)

Parolai, Stefano; Richwalski, Sandra M.; Milkereit, Claus; Bormann, Peter

doi:10.1016/j.tecto.2004.03.024

Cited by 94 publications

(56 citation statements)

References 17 publications

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“…In an area mainly west of Cologne, nearly 400 sites have been investigated by Parolai et al [13,14,18]. Twenty of these, aligned on a nearly SW-NE oriented cross-section, are selected for this study (Fig.…”

Section: Site Characteristicsmentioning

confidence: 99%

“…In order to validate the reliability of the correction coefficients, S-wave velocity profiles were derived for the sites of two of the stations installed in the Cologne area to record local earthquakes [18]. One of these stations (K25) was located somewhat off the selected cross-section, while the other (K06) was very close to the site of s017 (Fig.…”

Section: Figmentioning

confidence: 99%

“…4. Spectral ratios at station sites K06 and K25 (from [18]). Top to bottom: H/V ratio of seismic noise; H/V (grey dots) and standard (black dots; only for K06) spectral ratios of local and regional recorded earthquakes.…”

Section: Psha Including Site Response Spectramentioning

confidence: 99%

See 2 more Smart Citations

Site-specific response spectra from the combination of microzonation with probabilistic seismic hazard assessment—An example for the Cologne (Germany) area

Parolai¹,

Grünthal²,

Wahlström³

2007

Soil Dynamics and Earthquake Engineering

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Section: Site Characteristicsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

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Site-specific response spectra from the combination of microzonation with probabilistic seismic hazard assessment—An example for the Cologne (Germany) area

Parolai¹,

Grünthal²,

Wahlström³

2007

Soil Dynamics and Earthquake Engineering

Self Cite

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“…In several studies of urban site effects (Parolai et al 2004;Pilz et al 2009), temporary arrays of a few tens of stations have been used to record weak motion events for assessing the site response.…”

Section: Introductionmentioning

confidence: 99%

“…Tselentis et al (2011) used the Self-Organizing Map (SOM) technique for cluster analysis, based on the similarity of earthquake HVSRs. In both studies, clustering was identified, but since neither the HVSRs of noise nor of earthquakes represents the true site response (Field and Jacob 1995;Bindi et al 2000;Bard 2004;Parolai et al 2004), it is not possible to assign to a site an appropriate amplification function that could then be used when calculating ground motion and risk scenarios. Recently, Strollo et al (2012) used correlation analysis between HVSRs of Single station Seismic Noise measurement Points (SSNP) and seismic noise of a few stations for which spectral intensity ratios (SIRs) had been calculated using earthquake records to spatially extend the SIRs to the large number of SSNPs.…”

Section: Introductionmentioning

confidence: 99%

Improving the spatial resolution of ground motion variability using earthquake and seismic noise data: the example of Bishkek (Kyrgyzstan)

Ullah

Bindi

Pittore

et al. 2012

Bull Earthquake Eng

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Site response analysis plays an important role in seismic hazard and risk assessment, and in defining the optimal engineering design for civil structures. However, due to increasing urbanization, target areas are often too vast to be covered by standard approaches, resulting in large uncertainties in the spatial variability of the expected ground motion. Here, we propose a method to improve the spatial resolution of ground motion variability in terms of Standard Spectral Ratios (SSRs), using earthquakes recorded at a few selected sites for a relatively short amount of time, and seismic noise data collected over a denser grid, taking advantage of clustering and correlation analysis. The method is applied to Bishkek, Kyrgyzstan. Using the K-means clustering algorithm, three clusters of site response types have been identified, based on their similarity of SSRs. The cluster's site responses were adopted for sites where only single station noise measurements were carried out, based on the results of correlation analysis. The spatial variability of the site response correlates well with the main geological features in the area. In particular, variability is noted from south to north, consistent with both the changes in the thickness of the sedimentary cover over the basin and in the Quaternary material outcropping at the surface. This method has therefore the potential to improve the estimation of site effects at the local scale in the future.

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Influence of Bedrock on Site Response

Pandey

Jakka

Kumar

2022

Lecture Notes in Civil Engineering

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Assessment of the stability of H/V spectral ratios from ambient noise and comparison with earthquake data in the Cologne area (Germany)

Cited by 94 publications

References 17 publications

Site-specific response spectra from the combination of microzonation with probabilistic seismic hazard assessment—An example for the Cologne (Germany) area

Site-specific response spectra from the combination of microzonation with probabilistic seismic hazard assessment—An example for the Cologne (Germany) area

Improving the spatial resolution of ground motion variability using earthquake and seismic noise data: the example of Bishkek (Kyrgyzstan)

Influence of Bedrock on Site Response

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