U.S. Geological Survey seismic engineering data report, 1974-75 records; strong-motion earthquake accelerograms digitization and analysis

This is the fourth of a series of reports planned to include the results of digitization and routine analyses of strong-motion earthquake accelerograms published by the U.S. Geological Survey. Serving as a model for this effort is the collection of data reports published by the Earthquake Engineering Research Laboratory of the California Institute of Technology during the years 1969 - 1975 and covering the significant records of the period from 1933 up to the San Fernando earthquake of February 9, 1971. Earlier reports in the present series have covered records from 1971, Peru, and 1972 (USGS Open File Report Nos. 76-609, 77-587, and 78-941, respectively). The present report includes a selection of 1974 and 1975 records.