| Abstract: | Strong motion data from western North America for earthquakes of magnitude greater than 5 are examined to provide the basis for estimating peak acceleration, velocity, displacement, and duration as a function of distance for three magnitude classes. Data from the San Fernando earthquake are examined to assess the effects of associated structures and of geologic site conditions on peak recorded motions. Small but statistically significant differences are observed in peak values of horizontal acceleration, velocity, and displacement recorded on soil at the base of small structures compared with values recorded at the base of large structures. Values of peak horizontal acceleration recorded at soil sites in the San Fernando earthquake are not significantly different from the values recorded at rock sites, but values of peak horizontal velocity and displacement are significantly greater at soil sites than at rock sites. Three recently published relationships for predicting peak horizontal acceleration are compared and discussed. Considerations are reviewed relevant to ground motion predictions at close distances where there are insufficient recorded data points. |
| Genre: | USGS Numbered Series |
| ProdID: | 7123 |
| Citation Author: | Boore, David M.; Oliver, Adolph A. III; Page, Robert A.; Joyner, William B. |
| Citation Contributing Office: | Earthquake Science Center, Menlo Park Science Center |
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| Citation Language: | English |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | i, 38 p.; Figures |
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| Citation Public Comments: | Prepared on behalf of the Nuclear Regulatory Commission |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 78-509 |
| Citation Search Results Text: | Estimation of ground motion parameters; 1978; OFR; 78-509; Boore, David M.; Oliver, Adolph A. III; Page, Robert A.; Joyner, William B. |
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| Citation Year: | 1978 |
| Type: | citation/reference |
| Text: | Estimation of ground motion parameters; 1978; OFR; 78-509; Boore, David M.; Oliver, Adolph A. III; Page, Robert A.; Joyner, William B. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/ofr_78_509.gif |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/1978/0509/ |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey |
| Superseded by: |
http://pubs.er.usgs.gov/publication/cir795
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