
doi: 10.1029/91eo00327
Digitized strong‐motion accelerograms of North American earthquakes through 1986 are now available on CD‐ROM optical disk (USGS Digital Data Series DDS‐7). The collection includes all available ground‐level uncorrected digital strong‐motion records from North America written prior to the end of 1986. The CD‐ROM includes retrieval software that will run on an IBM‐compatible PC. To order the catalog, send a check or money order for $32.00 to Map Sales, U.S. Geological Survey, Box 25286, Federal Center, Denver, CO 80225; tel. 303‐236‐7477.
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