On the development of improved Pseudo-Dynamic (PD) models for ground motion simulation

Banu Mena Cabrera (ETHZ), Dr. P. Martin Mai, (KAUST, Saudi Arabia), Dr. Luis A. Dalguer (ETHZ)

We are currently performing suite of dynamic rupture simulation of different sizes with stochastic initial stress distribution (Figure below) to investigate correlations between dynamic source parameters. The identified correlations are used to improve the pseudo-dynamic model that will lead to a more realistic, physics based ground motion prediction. The suite of dynamic models is developed using a parallelized FDM numerical model scalable to thousand of processors, currently running in our 20 processors linux cluster (stella).

_{Figure: Source parameters distribution calculated from dynamic rupture simulations}

For more details, please see

Mena, B.; P. M. Mai, K. B. Olsen, M. D. Purvance, and J. N. Brune (in press), “Hybrid Broadband Ground Motion Simulation Using Scattering Green’s Functions: Application to Large Magnitude Events”, Bull. Seism. Soc. Am., (download).

Mena, B. and P. M. Mai (in press), “Selection and Quantification of Near-Fault Velocity Pulses due to Source Directivity”, Georisk, (download).