在先前向地震学家研究震级-频度关系的基础上,我们通过12个具有独立过程的地震序列,详细研究了它们实际的震级-频度分布.注意到低震级的频度分布特征决非因地震仪漏记所致.12个地震序列归-化后的震级-频度分布是类似的.作为初级近似,它...在先前向地震学家研究震级-频度关系的基础上,我们通过12个具有独立过程的地震序列,详细研究了它们实际的震级-频度分布.注意到低震级的频度分布特征决非因地震仪漏记所致.12个地震序列归-化后的震级-频度分布是类似的.作为初级近似,它们十分接近对数正态分布.对于这些序列,G-R 关系只在分段的震级范围内成立,并不能在整个震级范围内满足.同时,我们也讨论了在计算 b 值时诸如合理选择下限震级这样一些需注意的问题.展开更多
Making use of modern nonlinear physics theory and earthquake focus theory, combined with seismicity characteristics, the percolation model of earthquake activity is given in this paper. We take the seismogenic process...Making use of modern nonlinear physics theory and earthquake focus theory, combined with seismicity characteristics, the percolation model of earthquake activity is given in this paper. We take the seismogenic process of alarge earthquake as a phase transition process of percolation and apply the renormalization method to phase transition of percolation. The critical property of the system, which is like percolation probability exponential andcorrelative length exponential, etc, can be calculated under the fixed point as which in the renormalization transformation infinite correlative length in percolation phase transition is taken. The percolation phase transition process of two large earthquakes, which are Haicheng and Tangshan event occurred in 1975 and 1976 respectively, hasbeen discussed by means of seismicity data before and after two shocks.展开更多
文摘在先前向地震学家研究震级-频度关系的基础上,我们通过12个具有独立过程的地震序列,详细研究了它们实际的震级-频度分布.注意到低震级的频度分布特征决非因地震仪漏记所致.12个地震序列归-化后的震级-频度分布是类似的.作为初级近似,它们十分接近对数正态分布.对于这些序列,G-R 关系只在分段的震级范围内成立,并不能在整个震级范围内满足.同时,我们也讨论了在计算 b 值时诸如合理选择下限震级这样一些需注意的问题.
文摘Making use of modern nonlinear physics theory and earthquake focus theory, combined with seismicity characteristics, the percolation model of earthquake activity is given in this paper. We take the seismogenic process of alarge earthquake as a phase transition process of percolation and apply the renormalization method to phase transition of percolation. The critical property of the system, which is like percolation probability exponential andcorrelative length exponential, etc, can be calculated under the fixed point as which in the renormalization transformation infinite correlative length in percolation phase transition is taken. The percolation phase transition process of two large earthquakes, which are Haicheng and Tangshan event occurred in 1975 and 1976 respectively, hasbeen discussed by means of seismicity data before and after two shocks.
