[1]FAN Qiang,JU Nengpan,XIE Mingli,et al.Comparation of Geological Hazard Risks before and after Jiuzhaigou MS7.0 Earthquake in 2017[J].Journal of Seismological Research,2019,42(03):419-427.
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Comparation of Geological Hazard Risks before and after Jiuzhaigou MS7.0 Earthquake in 2017
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 03
Page number:
419-427
Column:
Public date:
2019-07-24
- Title:
- Comparation of Geological Hazard Risks before and after Jiuzhaigou MS7.0 Earthquake in 2017
- Keywords:
- collapse; geological hazard assessment; frequency ratio; risk zoning; Jiuzhaigou MS7.0 earthquake
- CLC:
- DOI:
- -
- Abstract:
- Taking Jiuzhaigou earthquake as an example,we study the distribution law of co-seismic deformation and post-earthquake collapse geological disasters(collapse,landslide,unstable slope),and extract the influence factors of post-earthquake collapse geological disasters,and count the frequency ratio of each grade of each factor.Finally,according to the frequency ratio,we take the risk and geological disaster vulnerability assessment to complete the risk zoning before and after the Jiuzhaigou earthquake. The results show that the pre-earthquake geological disasters were mainly concentrated in the channel,and the post-earthquake geological disasters were mainly concentrated in the coseismic deformation zone.After Jiuzhaigou earthquake,the geological disaster risk range in Jiuzhaigou County increased to 120% before the earthquake level,and the increased risk zone was mainly Yuzha Town and Jiuzhaigou Scenic Area.
- References:
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Last Update:
2019-07-24