Seismic source mechanisms and ground motion models

A summary of the recently developed analytical models for the prediction of strong ground motions is presented in this paper. The models are classified into two groups: The first describes root mean square, peak values and Fourier spectra of ground accelerations and velocities, whereas the second develops power spectral densities, cross correlation coefficients and spatial variations of ground motions. Several source models used in the inverse problem, namely the problem of inferring source mechanisms from recorded data, are also discussed.