Preprints
https://doi.org/10.5194/nhess-2022-214
https://doi.org/10.5194/nhess-2022-214
 
05 Sep 2022
05 Sep 2022
Status: this preprint is currently under review for the journal NHESS.

A non-extensive approach to probabilistic seismic hazard analysis

Sasan Motaghed1, Mozhgan Khazaee1, Nasrollah Eftekhari2, and Mohammad Mohammadi3 Sasan Motaghed et al.
  • 1Department of Civil Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
  • 2Faculty of Technology and Mining, Yasouj University, Choram 75761-59836, Iran
  • 3Department of Statistics, Faculty of Science, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran

Abstract. We modify the probabilistic seismic hazard analysis (PSHA) formulation by replacing the Gutenberg-Richter power law with the SCP non-extensive model for earthquake size distribution and call it NEPSHA. SCP claimed to better model the regional seismicity than the classical models. The proposed method (NEPSHA) is implemented in the Tehran region, and the results are compared with the classic PSHA method. The hazard curves show that NEPSHA gives a higher hazard, especially in the range of practical return periods. The uniform hazard spectra of NEPSHA provide more spectral accelerations, especially for the medium height buildings, which are the most common urban structures.

Sasan Motaghed et al.

Status: open (until 17 Oct 2022)

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Sasan Motaghed et al.

Sasan Motaghed et al.

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Short summary
We modify the probabilistic seismic hazard analysis (PSHA) formulation by replacing the Gutenberg-Richter power law with the SCP non-extensive model for earthquake size distribution and call it NEPSHA.The proposed method (NEPSHA) is implemented in the Tehran region, and the results are compared with the classic PSHA method. The hazard curves show that NEPSHA gives a higher hazard, especially in the range of practical return periods.
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