Model parameter optimization for site - dependent simulation of ground motion by simulated annealing : Re - evaluation of the Ashigara Valley prediction experiment

ABSTRACT

More than 40 groups from 10 different countries participated n a weak- and strong- motion prediction experiment at Ashigara Valley which required the blind prediction of time series, spectra and spectral ratios for selected and instrumented sedimentary sites with well-known geotechnical properties. The wide scatter of the results of this experiment have raised a number of questions as to how to model high-frequency ground motion in the presence of available geootechnical and geophysical data. The critical re-evaluation of our own prediction which was based on