Revision of Ahvaz City seismic hazard analyzes according to the state of Ahvaz fault

Authors

1 Department of Civil Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran

2 Faculty of Technology and Mining, Yasouj University, Choram, Iran.

3 Department of Civil Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran.

4 Department of Civil Engineering, Yasouj University, Yasouj, Iran

Abstract

According to the standard No.2800, as well as most of the seismic hazard documents and analyses, Ahvaz city is reported as a region with moderate seismic hazard. These documents and information do not match with the fault condition of the region. In this paper, a "comprehensive study" of the seismicity of the Ahvaz region is presented in the field of deterministic and probabilistic seismic hazard analysis. Based on the results of this study, it seems that a fundamental review of the seismic hazard of Ahvaz is necessary. The earthquake risk analysis determines the maximum acceleration above g0.7 for an unspecified period of time and the possible risk analysis gives the maximum acceleration 0.16 g to 0.29 g for a planned earthquake and 0.33 g to 0.61g for a severe earthquake. In this way, it is suggested to include the city of Ahvaz among the cities with high seismic hazard to ensure the safety of the citizens. This study has opened a parenthesis in the field of earthquake risk in Ahvaz city and the "comprehensive study" statement is incomplete due to the lack of necessary geological information. In order to reach more reliable results and close this parenthesis in terms of financial issues, it is strongly recommended that in this field, more detailed geological and geophysical research focusing on detailed methods of paleoseismology with emphasis on accurate determination the specification of Ahvaz fault should be made.

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References

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Advanced Applied Geology
Volume 14, Issue 4
January 2025
Pages 1072-1098

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