Noise induced dynamics of earthquake nucleation model All rights reserved https://unilib.phaidrabg.rs/o:2642 2021 info:eu-repo/semantics/conferenceProceedings 8th International Congress of the Serbian Society of Mechanics, June 28-30, 2021, Kragujevac, Serbia Kostić, Srđan Vasović, Nebojša Abstract: In present paper, we analyze the effect of seismic noise on the onset and dynamics of earthquake nucleation models. For this purpose, we examine the model of 100 (model l) and 10 (model 2) all-to-all coupled units in a system of blocks interconnected by sprmgs of the same coupling strength. It is assumed there is a time delay m a displacement of neighboring blocks, which qualitatively corresponds to the effect of friction state variable. For model l, we analyze the effect of random (white) seismic noise, whose natural occurrence is confirmed by the previous Investigation works. Effect of the noise is such that it induces the transition between different dynamical regimes, which are analogous to different states of earthquake fault motion: equilibrium state or steady sliding and aseismic creep. For model 2, we analyze the effect of colored noise which is also previously confirmed to occur in natural conditions. Results of the analysis indicate the occurrences of transitions between steady state regime, aseisnuc creep and seismogenic fault motion. For both models, deterministic variants of starting stochastic models are developed using mean-field approximation. spring-block model, bifurcation, random noise, colored noise, mean-field approximation Serbian Society of Mechanics eng application/pdf 1642817 bytes