The b-value estimation based on the artificial statistical method for Iran Kope-Dagh seismic province

Motaghed, Sasan; Khazaee, Mozhgan; Mohammadi, Masi

doi:10.1007/s12517-021-07970-y

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…Selecting the mmin can have a significant effect on hazard outcomes, especially for peak ground acceleration (PGA) and in short periods in areas with low seismicity. In low seismicity areas, the hazard comes from the majority of small earthquakes in short distances [16]. Also, the mmin can affect the shape and level of the response spectrum [17].…”

Section: An Overview Of the Concepts And Relationships Of The Pshamentioning

confidence: 99%

A Reliable Method for Determining the Tapered Minimum Magnitude in a Probabilistic Seismic Hazard Analysis

motaghed,

fakhriyat

2023

IJRRS

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One of the inputs of probabilistic seismic hazard analysis (PSHA) is the minimum magnitude (mmin) of damaging earthquakes. Recent studies have shown that the choice of mmin can affect the results of PSHA. That is, if the mmin value is low, the PSHA will be overestimated. Therefore, it is important to choose the mmin value in such a way that earthquakes with greater magnitude than mmin have the capability to damage the structure. Obviously, the mmin depends on the characteristics of the structure and the earthquake. The mechanism of occurrence of earthquakes in each region is such that earthquakes with different characteristics can occur. Therefore, earthquakes with the same magnitude cause different levels of damage to the structure. This paper uses a tapered line instead of the cut-off magnitude for mmin. In this regard, we model The 3, 5, and 8-story intermediate concrete frame using Opensees software and perform time history dynamic analysis based on 246 earthquake accelerograms. The structural damage is assumed based on the drift ratio. The drift ratio of 0.004 is assumed as the limit state for the operational performance (OP) level. Using the non-uniform distance number, the mmin taper line is obtained as [4.5, 5.5]. This number can be used as the integral lower bound in the PSHA.

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Section: An Overview Of the Concepts And Relationships Of The Pshamentioning

confidence: 99%

A Reliable Method for Determining the Tapered Minimum Magnitude in a Probabilistic Seismic Hazard Analysis

motaghed,

fakhriyat

2023

IJRRS

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SCP parameters estimation for catalogs with uncertain seismic magnitude values

Motaghed,

Mohammadi,

Eftekhari

et al. 2024

Acta Geophys.

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A non-extensive approach to probabilistic seismic hazard analysis

Motaghed¹,

Khazaee²,

Eftekhari³

et al. 2023

Nat. Hazards Earth Syst. Sci.

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Abstract. We modify the probabilistic seismic hazard analysis (PSHA) formulation by replacing the Gutenberg–Richter power law with the SCP (Sotolongo-Costa and Posadas) non-extensive model for earthquake size distribution and call it NEPSHA. The SCP claimed to model the regional seismicity better 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.

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The b-value estimation based on the artificial statistical method for Iran Kope-Dagh seismic province

Cited by 3 publications

References 33 publications

A Reliable Method for Determining the Tapered Minimum Magnitude in a Probabilistic Seismic Hazard Analysis

A Reliable Method for Determining the Tapered Minimum Magnitude in a Probabilistic Seismic Hazard Analysis

SCP parameters estimation for catalogs with uncertain seismic magnitude values

A non-extensive approach to probabilistic seismic hazard analysis

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