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Analysis of strong earthquake ground motion for prediction of response spectra
Author(s) -
Trifunac Mihailo D.
Publication year - 1973
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290020106
Subject(s) - magnitude (astronomy) , peak ground acceleration , seismology , moment magnitude scale , induced seismicity , geology , seismic moment , amplitude , response spectrum , acceleration , spectral acceleration , scaling , displacement (psychology) , spectral line , earthquake simulation , geodesy , strong ground motion , richter magnitude scale , earthquake engineering , ground motion , physics , geometry , mathematics , classical mechanics , fault (geology) , optics , psychology , astronomy , psychotherapist
Prediction of response spectra for earthquake engineering purposes is considered from a new point of view based on the dislocation theory of earthquakes. It is shown that the traditional scaling of response spectra by the predicted peak acceleration should be limited to the high‐frequency end of the spectrum, and that the peak acceleration in the near field is not strongly correlated with earthquake magnitude. The amplitude of the long‐period end of response spectrum at source to station distances greater than about 10 source dimensions should be scaled with seismic moment, while for distances less than about one source dimension this amplitude should be proportional to the permanent ground displacement. To reconcile the existing extensive data on seismicity of active regions based on magnitude scale, it is shown that magnitude can be used to determine approximately the seismic moment.