Fundamental research on application of non-linear spectral finite element method for surface earthquake fault problems

This paper proposes a new analysis method for a stochastic model of non-linear continuum, in order to predict surface fault behavior. Compared with Monte-Carlo simulation, the proposed method is capable of carrying out the numerical analysis of the stochastic model more efficiently. It is shown that the simulation that uses the proposed method reproduces the formation of Riedel shears for a lateral problem. The convergence of the numerical solution is examined, and the validity of the proposed method is discussed.