عنوان مقاله [English]
Seismic hazard assessment is a topic related to evaluating the possibility of earthquake occurrence and estimating the feasible ground motion of the earthquake in a specific region. The existence of most active seismic regions and the importance of marine structures in our country make it necessary to use seismic hazard assessment for designing any offshore structure which is a dry dock in the 7th Azar navy factories. In this study, three seismic hazard assessment methods, deterministic, probabilistic and statistical, are used to determine the most prone fault and the occurrence of most major earthquakes in the southwest of Khazar sea offshore. The results extracted using the deterministic method show that Astara is the most prone fault which could produce 0.66 g as peak ground acceleration in our site. Moreover, the probabilistic method result is used to produce the seismic hazard assessment maps by ez-frisk software for the region which show that 0.61, 1.79, and 2.04 g are the PGAs with the return period of 10, 50, and 475 years, respectively could be produced by the high seismicity faults. As a result, to design the ports with the capability of loading and transportation, the third level earthquakes are considered whose occurrence possibility is more than the life of structures.