资源环境科技发展态势分析平台

Correlations between geodynamic parameters and interplate seismicity characteristics in subduction zones are generally weak due to the short instrumental record and multiparameter influences. To investigate the role of subduction velocity V-s and the width of the seismogenic zone W on maximum magnitude M-max, seismic rate , characteristic recurrence rate tau(c), and moment release rate MRR, we use synthetic data sets from simplified analog and numerical models to gain insight into natural subduction zones seismicity. Our models suggest that M-max increases with W and is unaffected by V-s, tau increases with V-s, tau(c) increases with V-s x W, and MRR increases with V-s x W. In nature, only the positive correlation between V-s and is significant. Random sampling of our time series suggest that the positive correlation between V-s and can be observed with short observation time windows. Other correlations, including M-max versus W, become clear only for time window lengths longer than 1/tau(c).