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Evaluation of Strong Motion Acceleration for Embankment Dam Design Considering Local Seismotectonics

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  • Azm Al-Homoud

Abstract

A probabilistic method is used to evaluate the seismichazard of Adassiya dam site on the Yarmouk river in Jordan. A line source model developedby McGuire (1978) is used in this study. An updated earthquake catalogue coveringthe period from 1 A.D. to 1996 A.D. is used for this purpose. This catalogue includesall earthquakes that occurred in Jordan and adjacent areas, more specifically between latitudes27.0°–35.5°N and longitudes 32.0°–39.0°E. Nine distinct seismic sources of potential seismic activitiesare identified. The seismic hazard parameters are determined using the method suggested by Kijko and Sellevoll (1989). The Peak Ground Acceleration (PGA) is selected as a measure of ground motion severity. Esteva (1974) attenuation relationship is used in evaluating PGA values at each dam site. Analysis is carried out for 50%, 90%, and 95% probability that is not being exceeded in a life time of 50, 100, and 200 years. Results of analysis indicate that PGA values at the dam site are as follows: [•] Operating Basis Earthquake (OBE) (50% probabilityof non-exceedance for a design life of 100 years – corresponding to a return period of 145 years) is 133.6 cm/sec 2 . [•] An earthquake with 90% probability of non-exceedancefor a design life of 50 years – corresponding to a return period of 475 years is 214.9 cm/sec 2 . [•] Maximum Credible Earthquake (MCE) (Return period of900 years) is 283.0 cm/sec 2 . Strong motion acceleration time history of these earthquakes are givenbased on strong motion records of the November 1995 Gulf of Aqaba earthquake. Local site effect analysis for Adassiya Dam site using SHAKE program showed no amplification. Normalized site-specific acceleration response spectra for OBE and MCE design earthquakes is also given. Copyright Kluwer Academic Publishers 2003

Suggested Citation

  • Azm Al-Homoud, 2003. "Evaluation of Strong Motion Acceleration for Embankment Dam Design Considering Local Seismotectonics," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 29(1), pages 37-56, May.
    • Handle: RePEc:spr:nathaz:v:29:y:2003:i:1:p:37-56
    DOI: 10.1023/A:1022929306499
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    References listed on IDEAS

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    1. Azm Al-Homoud & Abdel-Qader Fandi Amrat, 1998. "Comparison Between Recorded and Derived Horizontal Peak Ground Accelerations in Jordan," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 17(2), pages 101-115, March.
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    Cited by:

    1. Evren Seyrek & Hasan Tosun, 2011. "Deterministic approach to the seismic hazard of dam sites in Kızılırmak basin, Turkey," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 59(2), pages 787-800, November.

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