Simulating and analyzing artifical non-stationary earthquake ground motions.
This report describes models used to simulate earthquake accelerograms and analyses of these artifical accelerogram records for use in structural response studies. The artifical accelerogram records are generated by a class of linear difference equations which have been previously identified as suitable for describing strong ground motions. The major contributions of the report are the use of Kalman filters for estimating time-varying model parameters, and the development of an effective non-parametric method for estimating the variance envelopes of the accelerogram records. - from US Govt Reports Announcements, 12, 1981