Investigating spectral and experimental methods in predicting wind waves in the southern regions of Iran (case study: Asalouye port)

Ahmadvand, Homayoon; Sheykh Bahai, Ali; Kaabi, Amer; Abolfathi, Dariush

doi:10.22034/ijcoe.2025.462958.1087

Investigating spectral and experimental methods in predicting wind waves in the southern regions of Iran (case study: Asalouye port)

Document Type : Original Research Article

Authors

Homayoon Ahmadvand ¹

Ali sheykh bahai ²

Amer Kaabi ³

dariush Abolfathi ⁴

¹ PhD in Marine Physics, Khorramshahr University, Khorramshahr University of Marine Sciences and Technology

² PhD candidate in Physical Oceanography at University of Hormozgan / Iranian National Institute of Oceanography and Atmospheric Science, Tehran, Iran

³ Department of Basic Sciences, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran

⁴ Assistant Professor, Payam Noor University, Department of Natural Geography

10.22034/ijcoe.2025.462958.1087

Abstract

sea level rise due to wind are one of the most important phenomena in marine environments that are effective in the coastal and offshore processes. This paper discusses methods to evaluate the accuracy of experimental and spectral methods in predicting wind waves in Asaluyeh port. Empirical methods including SMB, SPM, CEM and Jonswap and Spectral methods include Bretschneider, Mitsuyasu, Pierson-Moskowitz, Jonswap, ISSC spectrum were considered to evaluted the mentioned waves. The results show that Jonswap method among experimental methods in duration of 6 hours is the most appropriate method to determine the wave profile in Asaloyeh port. Furthermore by comparing spectral methods it was found the Bretschneider, Mitsuyasu and Pierson-Moskowitz spectrum show lowest error in the calculation of Hm0 nd fp. To better match the measured spectra, their coefficients were corrected and after height value was calculated using each spectrum. Then, using corrected and uncorrected spectra, directional spectra of the region were plotted.

Keywords

wind waves

duration

significant wave height

wave spectrum

directional wave spectrum

Subjects