Analyses of strong motion earthquake accelerograms, Volume IV - Fourier amplitude spectra; Part A - Accelerograms IIA001 through IIA020

This is the first volume of a series presenting Fourier amplitude spectra for earthquake ground motions and for structural response accelerations. An introduction summarizes Fourier spectrum techniques in earthquake engineering as a background to the use of the data. For each earthquake accelerogram, two spectrum-plots are given a Fourier amplitude spectrum versus frequency on a linear scale, and a log-spectrum, log-frequency plot. In the series, Fourier amplitude spectra will be given for all corrected accelerograms, including building response measurements. For buildings for which simultaneous basement and upper floor accelerograms are available, building transfer functions are also plotted. The earthquakes in Volume IV, Part A, match the uncorrected accelerogram data of Volume I, the corrected accelerogram data of Volume II, and the response spectrum plots of Volume III