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The Wave Energy Concentration at the Agulhas Current off South Africa

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  • I. Lavrenov

Abstract

The case of a freak wave collision with the ship in the Agulhas current is described. The explanation of the appearance of the freak wave as a result of wind-wave transformation in the Agulhas current is given. Swell is captured and intensified by the counter-current and is located in the neighbourhood of the maximum value of the current velocity, as a result of which there is a great concentration of wave-energy density. The superposition of wind and sea with swell transformed by the current promotes the formation of the freak waves. Using a simple mathematical analysis, an optimal ship track is proposed which could reduce the risk of collision with a freak wave. Copyright Kluwer Academic Publishers 1998

Suggested Citation

  • I. Lavrenov, 1998. "The Wave Energy Concentration at the Agulhas Current off South Africa," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 17(2), pages 117-127, March.
    • Handle: RePEc:spr:nathaz:v:17:y:1998:i:2:p:117-127
    DOI: 10.1023/A:1007978326982
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    Cited by:

    1. A. Slunyaev & A. Sergeeva & I. Didenkulova, 2016. "Rogue events in spatiotemporal numerical simulations of unidirectional waves in basins of different depth," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 84(2), pages 549-565, November.
    2. Zeng, Fanxu & Zhang, Ningchuan & Huang, Guoxing & Gu, Qian & He, Meng, 2023. "Dynamic response of floating offshore wind turbines under freak waves with large crest and deep trough," Energy, Elsevier, vol. 278(C).

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