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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 3
Nat. Hazards Earth Syst. Sci., 13, 679–688, 2013
https://doi.org/10.5194/nhess-13-679-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Nat. Hazards Earth Syst. Sci., 13, 679–688, 2013
https://doi.org/10.5194/nhess-13-679-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 20 Mar 2013

Research article | 20 Mar 2013

Ground-motion scenarios consistent with PSH deaggregation for Tehran, capital city of Iran

F. Abdi1, N. Mirzaei2, and E. Shabani2 F. Abdi et al.
  • 1Department of Geophysics, Science and Research Branch, Islamic Azad University, Tehran, Iran
  • 2Institute of Geophysics, University of Tehran, Tehran, Iran

Abstract. This study presents the results of probabilistic seismic hazard (PSH) deaggregation for 5%-damped 0.2 and 1.0 s spectral accelerations, corresponding to mean return periods (MRPs) of 50, and 475 yr for Tehran city. The aim of this paper is to quantify the dominant events that have the most contribution on ground-motion exceedance from the above mentioned hazard levels. The scenario earthquakes are characterized by bins of magnitude (M), source-to-site distance (R), and epsilon (ε). The results reveal that for Tehran city, the hazard is mainly controlled by local seismicity. Generally, as the spectral acceleration period increase, the contribution of larger and more distant scenario earthquakes to the overall seismic hazard increase.

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