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Empirical correlation of PGA, spectral accelerations and spectrum intensities from active shallow crustal earthquakes
Author(s) -
Bradley Brendon A.
Publication year - 2011
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.1110
Subject(s) - spectral acceleration , attenuation , acceleration , intensity (physics) , ground motion , peak ground acceleration , correlation , motion (physics) , measure (data warehouse) , geology , equations of motion , strong ground motion , geodesy , physics , seismology , mathematics , geometry , classical mechanics , computer science , optics , data mining
Empirical correlation equations between peak ground acceleration, spectral acceleration, spectrum intensity, and acceleration spectrum intensity are developed. The correlation equations are developed for shallow crustal earthquakes using the Next Generation Attenuation (NGA) ground motion database, and four of the NGA ground motion prediction equations (GMPEs). A particularly novel aspect of the present study is the explicit consideration of epistemic uncertainty in the correlation equations due to both the adopted ground motion database and GMPEs. The resulting correlation equations enable the joint consideration of these four ground motion intensity measures in ground motion selection using frameworks such as the generalized conditional intensity measure approach. Copyright © 2011 John Wiley & Sons, Ltd.