A Fourier series non-stationary coherency model with respect to site conditions for the horizontal component of ground motion

A Fourier series non-stationary coherency model with respect to the site conditions for horizontal component was developed. The evolution of achieved using parameters related site, inter-station distance, and time. First, based on simulation a ground-motion field considering wave-passage effect site-response effect, approach used estimation wavelet transform is presented. Subsequently, formulated. are considered piecewise constant variables represent non-stationarity estimated coherency. effects distance proposed Parameters were obtained. Finally, compared ground motion records at SMART-1 array during Event 45, stationary model, data from Argostoli rock-site dense array. This indicates that can well match correlation realistic spatially variable seismic motion, which time, distance.