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Assessment of possible peak accelerations through stochastic variations
Author(s) -
Nava F. Alejandro
Publication year - 1991
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.1991.tb00146.x
Subject(s) - geology , amplitude , variation (astronomy) , range (aeronautics) , series (stratigraphy) , seismogram , gaussian , geodesy , seismology , function (biology) , phase (matter) , physics , optics , paleontology , materials science , quantum mechanics , evolutionary biology , astrophysics , composite material , biology
A method is presented for the estimation of possible maximum accelerations, as well as of other accelerogram or seismogram characteristics, based on the stochastic variation of the spectral phase of pulses from an observed time series of interest, possibly the ‘design earthquake’. For a seismic source with the same spectral amplitude the variations are caused by slight differences in source time function, source or receiver location, etc. A large number of variations define the range of possible time series, as well as clear and stable relationships between the standard deviations of phase variation distributions (here considered Gaussian) and possible values of the studied features, as well as their distributions and probabilities.