The wave energy concentration at the Agulhas current off South Africa

被引：190

作者：

Lavrenov, IV ^{[1
]}

机构：

[1] Arctic & Antarctic Res Inst, St Petersburg 199397, Russia

来源：

NATURAL HAZARDS | 1998年 / 17卷 / 02期

关键词：

freak waves; Agulhas current; ship collision; wave energy; modelling of wave transformation on current;

D O I：

10.1023/A:1007978326982

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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.

引用

页码：117 / 127

页数：11

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