Identification methods of important parameters for near-fault pulse-type ground motions

during the process of fitting or synthesizing near-fault ground motion, parameters of the equivalent velocity pulse need to be decided based on seismic records. Thus, it is a key problem that how to identify these parameters from the records. Pulse period and pulse peak velocity are important parameters in the equivalent velocity pulse models. In this study, various methods on identifying these parameters are reviewed. It is shown that all the existing methods have limitations, especially for the irregular seismic records. Finally, problems need to be further studied is pointed out.