[1]LUO Guichun,LI Xiaojun,FU Lei,et al.Study on Nonlinearity of Site Effect with the HVSR Spectral Ratio[J].Journal of Seismological Research,2019,42(04):546-554.
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Study on Nonlinearity of Site Effect with the HVSR Spectral Ratio
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 04
Page number:
546-554
Column:
Public date:
2019-12-15
- Title:
- Study on Nonlinearity of Site Effect with the HVSR Spectral Ratio
- Keywords:
- Fourier specturm; velocity response spectrum; HVSR spectral ratio; site effect; predominant frequency; nonlinearity
- CLC:
- P315.91
- DOI:
- -
- Abstract:
- SC Ⅱ stations do have an overall majority near the fault.We select the mainshock,aftershocks,and microtremors strong-motion observation data of the Wenchuan earthquake recorded by the Lixianmuka station.This paper calculates the HVSR spectral ratio of the Fourier amplitude spectrum and velocity response spectrum,and analyzes the nonlinearity of site effect.Research shows the predominant frequency from the HVSR spectral ratio of velocity response spectrum is much more prominent.The result shows that the site response appears obvious nonlinearity when PGA in different scale.The predominant frequency of the site is gradually decreasing along with the PGA of >100 gal aftershocks,100-200 gal aftershocks,200-300 gal aftershocks,and the mainshock.
- References:
- -
- Similar References:
Memo
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Last Update:
2019-12-15