惠春, 潘华, 郭星, 李金臣, 郎从. 2018: 运用古地震数据分析布朗过程时间模型中强震复发间隔变异系数. 地震学报, 40(2): 241-253. DOI: 10.11939/jass.20170146
引用本文: 惠春, 潘华, 郭星, 李金臣, 郎从. 2018: 运用古地震数据分析布朗过程时间模型中强震复发间隔变异系数. 地震学报, 40(2): 241-253. DOI: 10.11939/jass.20170146
Hui Chun, Pan Hua, Guo Xing, Li Jinchen, Lang Cong. 2018: Aperiodicity parameters of reoccurrence intervals of large earthquakes in the Brownian passage time model based on paleo-earthquake data. Acta Seismologica Sinica, 40(2): 241-253. DOI: 10.11939/jass.20170146
Citation: Hui Chun, Pan Hua, Guo Xing, Li Jinchen, Lang Cong. 2018: Aperiodicity parameters of reoccurrence intervals of large earthquakes in the Brownian passage time model based on paleo-earthquake data. Acta Seismologica Sinica, 40(2): 241-253. DOI: 10.11939/jass.20170146

运用古地震数据分析布朗过程时间模型中强震复发间隔变异系数

Aperiodicity parameters of reoccurrence intervals of large earthquakes in the Brownian passage time model based on paleo-earthquake data

  • 摘要: 在我国大陆广泛搜集到的45个地震序列的基础上,首先利用最大似然估计法计算出不同样本量地震序列的变异系数值,然后与其对应的断层源参数作相关性分析,并对具有不同样本量地震序列中的变异系数值进行标准化处理,进而计算得到一个通用的变异系数值(αc=0.37)。相关分析结果显示变异系数值与断层的长度和滑移速率呈负相关,在此基础上本文对通用变异系数值(αc=0.37)的应用进行了分析,通过对αc进行一倍标准差运算得到3个变异系数值(0.21,0.37,0.53),分别适用于特征性具有明显差异的活动断层.

     

    Abstract: Based on the 45 seismic sequences collected in Chinese mainland, the maximum likelihood estimation method is used to calculate the variation coefficient of earthquake sequences with different sample size, and the correlativities with the parameters of the corresponding fault source are carried out, and then the estimated values are standardized. Finally, a general value αc=0.37 of aperiodicity is given. The results of the correlation analysis show that the variation coefficient is negatively correlated with the length of the fault and the horizontal slip rate, so the application of the general aperiodicity value (αc=0.37) is analyzed. The result show that the three α values (0.21, 0.37, 0.53) obtained by performing standard deviation operation to αc are applied to the active faults with significantly differences in characteristics.

     

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