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U.S. Department of Energy
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Independent seismic evaluation of the 24-580-980 south connector ramps

Technical Report ·
DOI:https://doi.org/10.2172/605178· OSTI ID:605178
The interchange for highways 24, 580, and 980 (the Stack) in Oakland, California, lies 4.3 km from the surface expression of the Hayward fault and 26 km from the San Andreas fault. The purpose of this project is to compute realistic, linear, strong ground motion (rock outcrop motion) likely to affect this interchange during a hazardous earth-quake on the Hayward fault. With the exception of very long period ( >20 sec) motion, the Hayward fault will be the controlling deterministic ground motion hazard to this structure. We identified a magnitude M = 7.25 earthquake that ruptures 82 km of the Hayward fault as the principal hazard to the Stack; it has a moment of 8.5 x 10{sup 26} dyne-cm. Moment magnitudes (Hanks and Kanamori, 1979) are used in this report. Our goal is to produce realistic synthesized ground motion for three components and the full wavetrain and for frequencies from 0.05 to 33.0 Hz.
Research Organization:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
605178
Report Number(s):
UCRL-CR--123201-Vol.1; ON: DE98051163
Country of Publication:
United States
Language:
English