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Assessment of seismic risk scenarios for Bucharest, Romania

Author

Listed:
  • Florin Pavel

    (Technical University of Civil Engineering Bucharest)

  • Ileana Calotescu

    (Technical University of Civil Engineering Bucharest)

  • Radu Vacareanu

    (Technical University of Civil Engineering Bucharest)

  • Ana-Maria Sandulescu

    (Technical University of Civil Engineering Bucharest)

Abstract

In this paper, seismic risk scenarios for Bucharest, the capital city of Romania, are proposed and assessed. Bucharest has one of the highest seismic risk levels in Europe, and this is due to a combination of relatively high seismic hazard and a building stock built mainly before the devastating Vrancea 1977 earthquake. In this study, the seismic risk of Bucharest is assessed using the most recent information regarding the characteristics of the residential building stock. The ground motion amplitudes are evaluated starting from random fields obtained by coupling a ground motion model derived for the Vrancea intermediate-depth seismic source with a spatial correlation model. The seismic risk evaluation method applied in this study is based on the well-known macroseismic method. For several structural typologies, the vulnerability parameters are evaluated based on a damage survey performed on 18,000 buildings in Bucharest after the March 1977 earthquake. Subsequently, the risk metrics are compared with those from other studies in the literature that apply a different risk assessment methodology in order to gain a better view of the uncertainties associated with a seismic risk study at city level. Finally, the impact of several Vrancea intermediate-depth earthquake scenarios is evaluated and the results show that the earthquake which has the closest epicenter to Bucharest appears to be the most damaging.

Suggested Citation

  • Florin Pavel & Ileana Calotescu & Radu Vacareanu & Ana-Maria Sandulescu, 2018. "Assessment of seismic risk scenarios for Bucharest, Romania," 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. 93(1), pages 25-37, September.
    • Handle: RePEc:spr:nathaz:v:93:y:2018:i:1:d:10.1007_s11069-017-2991-3
    DOI: 10.1007/s11069-017-2991-3
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