[1]LIU Qi,LI Layue,HU Leyin.Evaluation of the Cross-fault Observation Network in Beijing and Its Adjacent Areas[J].Journal of Seismological Research,2023,46(04):491-502.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0055
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Evaluation of the Cross-fault Observation Network in Beijing and Its Adjacent Areas
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
46
Number of periods:
2023 04
Page number:
491-502
Column:
Public date:
2023-07-15
- Title:
- Evaluation of the Cross-fault Observation Network in Beijing and Its Adjacent Areas
- Keywords:
- cross-fault observation; earthquake forecasting effectiveness; monitoring conditions; groundwater; tectonic conditions; Beijing
- CLC:
- P315.727
- DOI:
- 10.20015/j.cnki.ISSN1000-0666.2023.0055
- Abstract:
- Beijing and its adjacent areas are characterized by developed economy,dense population and frequent historical strong earthquakes.In order to accurately study and judge the seismic risk in Beijing and its adjacent areas and reduce the disaster risk that may be caused by earthquakes,it is necessary to first understand the effectiveness of the current observational sites in this region.For this reason,this paper comprehensively considers the monitoring conditions and the effectiveness of earthquake forecasting of the cross-fault sites to design the evaluation scheme of the observational network.This paper studies the monitoring environment,the monitoring effectiveness,the effect of the groundwater level change and the surface subsidence,the matching of forecasting,the effectiveness of the optimal forecasting index and the matching of regional deformation.This paper proposes the comprehensive evaluation results and suggestions for the optimization of the observational network.The distribution of the current cross-fault sites in Beijing and its adjacent areas have good monitoring capacity for most of the major faults in the region and have good earthquake forecasting efficiency.However,the monitoring conditions of most observational sites on the Babaoshan-Huangzhuang-Gaoliying fault are relatively poor,and their forecasting efficiency is generally low.It is advisable to select other locations on the fault to supplement the observational sites.In addition to the fault structure,regional geological settings and hydrogeological conditions have an important impact on the effectiveness of the observational site,and need to be taken into account when selecting new sites.
- References:
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Last Update:
2023-10-01