Analyses of strong motion earthquake accelerograms, Volume IV - Fourier amplitude spectra; Part D - Accelerograms IID056 through IID070

This is the fourth report (Part D) of a series (Volume IV series) presenting Fourier amplitude spectra for earthquake ground motions and for structural response accelerations. Volume IV, Part A, Report No. EERL 72-100 included an introduction summarizing 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. The corrected records analyzed in this report, Volume IV, Part D, appeared in Volume II, Part D, Report No. EER.L 72-52. Their uncorrected versions were published in Volume I, Part D, Report No. EERL 71-21.