[1]LIN Guoliang,ZHANG Qian,CUI Jianwen,et al.Determining the Site Effects of the 2014 Ludian MS6.5 Earthquake Using HVSR Microtremor Method[J].Journal of Seismological Research,2019,42(04):531-537.
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Determining the Site Effects of the 2014 Ludian MS6.5 Earthquake Using HVSR Microtremor Method
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 04
Page number:
531-537
Column:
Public date:
2019-12-15
- Title:
- Determining the Site Effects of the 2014 Ludian MS6.5 Earthquake Using HVSR Microtremor Method
- Keywords:
- Longtoushan; microtremor; spectral ratio; site effect; Ludian earthquake
- CLC:
- P315.914
- DOI:
- -
- Abstract:
- The MS6.5 earthquake occurred in Ludian County of Yunnan Province,2014 caused severe damage to a large number of buildings on the pluvial fan,resulting in seriously personnel casualty and the economic loss.However,the damage of buildings on the river terrace was relatively lightly.Therefore,to find out the reason for this differences of damage level,we deployed high density observation array with the interval of 50-200m in the Longtoushan Town to measure microtremor continuously,and used the HVSR(Horizontal to vertical spectral ratio)method to get the predominant frequency and amplification factor of the site to study the site earthquake effect.We found out that the result of HVSR method was consistent with the outcomes from drill data.The HVSR predominant frequencies on the pluvial fan were between 1.5～5.0 Hz,while the ones on the river terrace were between 6.0～10 Hz,and the sites with relatively small predominant frequencies(less than 5 Hz)were highly consistent with the worst damaged area.
- References:
- -
- Similar References:
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Last Update:
2019-12-15