Stochastic nature of earthquake ground motion

摘要: Abstract In this paper, we analyze the irregular behavior of earthquake ground motion as recorded during Kraljevo M5.4 earthquake, which occurred on November 3rd, 2010 in Serbia. We perform analysis for accelerations at 6 seismological stations: Grua, Ruda, Rada, Bara, Zaga and Bdva. The latter were carefully chosen based their corresponding tectonic zone local geological setting. For each station, horizontal component acceleration north–south direction, is one primary interest engineering design. employ surrogate data testing methods nonlinear time series analysis. obtained results indicate that strong are stochastic, particular belonging to a class linear stationary stochastic processes with Gaussian inputs or distorted by monotonic, instantaneous, time-independent function. This type detected regardless setting conditions. revealed nature disagreement frequently assumed deterministically chaotic motion.