Loma Prieta, California, earthquake October 18 (GMT), 1989; processed strong-motion records, Volume 1

Abstract

This report contains the computer processed results of seventeen film records and a digital record from stations in the USGS Cooperative Network of permanent stations during the Loma Prieta, California, earthquake, M7.1, on October 18 (GMT), 1989.The 70 mm film records are from close-in stations (closest epicentral distance 27 km) or important $an Francisco Bay Area stations.Central recorder film records at three of these stations (Anderson Dam, 600 Montgomery Street and Emeryville) are also due for processing.This "Executive Summary" report contains computer plots of uncorrected acceleration (except relatively insignificant codas), corrected acceleration, velocity and displacements (except relatively insignificant codas), tripartite response spectra (except the upper storius of buildings and the crest of the dam), and Fourier amplitude!spectraplotted on log axes.Subsets of plots excluded from the above list, and other familiar plots (velocity response spectra on linear axes, and Fourier amplitude spectra on linear axes) are available from the authors at USGS, 345 Middlefield Road MS 977, Menlo Park, California 94025, upon request.A companion tape containing all processed results (except FFT Fourier amplitude spectra ordinates) is available from the National Geophysical Data Center, 325 Broadway (Mail E/GC1), Boulder, Colorado 80303; phone (303) 497-6764.