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Peak accelerations from the 17 October 1989 Loma Prieta earthquake

January 1, 1989

Peak accelerations of the Loma Prieta main shock have been tabulated from instruments maintained by a number of organizations. A subset of 86 records from nominally free-field sites have been analyzed which have been subdivided into rock, alluvium, and bay-mud categories according to data available in various reports. After correction for attenuation, the peak accelerations on rock, alluvium, and bay-mud sites are factors of 1.6, 1.8 and 4.5 larger, on the average, than Joyner and Boore's (1988) predicted values for a M=6.9 earthquake. The Loma Prieta earthquake provided the first opportunity to study the relative amplitudes from strong-motion recordings. -from Authors

Citation Information

Publication Year 1989
Title Peak accelerations from the 17 October 1989 Loma Prieta earthquake
Authors D. M. Boore, L. Seekins, W. B. Joyner
Publication Type Article
Publication Subtype Journal Article
Series Title Seismological Research Letters
Index ID 70015258
Record Source USGS Publications Warehouse

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