Abstract:We use acceleration records to analyze the force state of P-wave particle, the probability distribution of random vibration of P-wave particle and its polarization phenomenon. The results show that the force vector of P-wave particle random vibration obeys three-dimensional Gaussian distribution, and its probability density diagram is elongated ellipsoid. The geometric parameters of polarization ellipsoid can be obtained by the covariance matrix of acceleration records, and the epicenter azimuth can be obtained.
MA Liang,LU Jianqi,CHENG Jianwu. Proof and Application of Three Dimensional Gaussian Distribution of Acceleration Seismic Records[J]. jgg, 2022, 42(2): 199-202.