Developing families of Ochi-Hubble spectra for the northern parts of the Gulf of Oman

Golpira, Amir; Panahi, Roozbeh; Shafieefar, Mehdi

doi:10.1016/j.oceaneng.2019.03.011

Cited by 12 publications

(2 citation statements)

References 17 publications

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“…Another approach involves using a Gaussian spectrum to describe the primary component and JONSWAP to describe the secondary component [31]. The widely used bimodal spectrum is the Ochi-Hubble spectrum with six parameters, capable of separately describing swell spectra from distant sources and wind wave spectra generated by local wind fields, effectively capturing wave conditions during typhoon storm surges [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Unidirectional Wave Spectral Characteristics in the Northeastern Waters of Taiwan

Chao,

Lin,

et al. 2023

JMSE

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Marine energy development has been actively promoted in recent years. Analyzing wave data in the surrounding sea areas is crucial for improving wave power generator efficiency. This study collected unidirectional wave spectrum data from the northeast coastal area of Taiwan (e.g., Pengjia Islet, Fugui Cape, and NTOU). It aimed to analyze the main wave types (i.e., wind waves, swell, or mixed sea) and their proportions during the northeast and non-northeast monsoon periods. The results indicate that swell waves dominate at the NTOU buoy, while wind waves dominate at the other two stations. In addition, the analysis of wave spectra ratios revealed a low percentage of unimodal spectra (only about 0.5%), and bimodal and unformed spectra presented as predominant. Furthermore, this study also introduced a brand new JW-J wave spectrum, which combines the JW and JONSWAP spectra to describe low-frequency (swell) and high-frequency (wind wave) systems, showing superior performance compared to the Torsethaugen spectrum. Finally, this research analyzed the JW-J spectrum parameters from the Pengjia Islet and Fugui Cape stations and applied these results to the NTOU bouy for effectively describing wind/swell wave variations.

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Section: Introductionmentioning

confidence: 99%

Analysis of Unidirectional Wave Spectral Characteristics in the Northeastern Waters of Taiwan

Chao,

Lin,

et al. 2023

JMSE

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“…Later, a dual peak wave spectrum with four parameters was introduced by Guedeos [16], and he combined the two JONSWAP spectra to fit 1000 field spectra in the North Atlantic and 6000 spectra in the North Sea. In recent years, many scholars have improved the parameters of classical dual peak wave spectrum through a large amount of field spectrum data, and they verified that the Ochi-Hubble spectrum and the JONSWAP spectrum could well describe the characteristics of the dual peak spectrum of typhoon wave [17][18][19]. However, these formulas were just fitted by the field spectrum in a specific sea, and they only consider the distribution of wave energy in the frequency range.…”

Section: Introductionmentioning

confidence: 99%

A Computation Method for the Typhoon Waves Using the Field Wave Spectrum

et al. 2022

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Wave features and propagation characteristics during typhoons are the key factors to study the dynamic response of ocean engineering and coastal disaster prevention and mitigation under extreme climate. Based on the Longuet-Higgins theory, the method of the field spectrum during the typhoon was used to compute the typhoon waves. And the directional spectrum, the formulas of wave surface, the velocity of water particles, and the acceleration of water particles were investigated. The results showed that the interpolated field wave spectrum combined with the SWOP direction spectrum could accurately simulate the three-dimensional typhoon waves. The significant wave height and the average period of the simulated wave surface at fixed point were statistically evaluated by the upward zero-crossing method, and the relative errors were ± 5% and ± 15%, respectively. The typhoon wave surface computed by a dual peak spectrum had small periodic waves, and the velocity and acceleration of water particles differed considerably from the JONSWAP spectrum. Finally, a fastened slender cylinder was simulated under action of the typhoon waves, which proved the applicability of the computation method. This study aims at providing a basis for the simulation of the dynamic response of marine structures under the typhoon waves action.

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Design of a rubble mound breakwater under the combined effect of wave heights and water levels, under present and future climate conditions

Radfar

Shafieefar

Akbari

et al. 2021

Applied Ocean Research

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Developing families of Ochi-Hubble spectra for the northern parts of the Gulf of Oman

Cited by 12 publications

References 17 publications

Analysis of Unidirectional Wave Spectral Characteristics in the Northeastern Waters of Taiwan

Analysis of Unidirectional Wave Spectral Characteristics in the Northeastern Waters of Taiwan

A Computation Method for the Typhoon Waves Using the Field Wave Spectrum

Design of a rubble mound breakwater under the combined effect of wave heights and water levels, under present and future climate conditions

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