Wave Directions in a Narrow Bay
Wave Directions in a Narrow Bay
复制标题
狭窄海湾中的波浪方向
DOI：
10.1175/2009jpo4220.1
复制
发表时间：
2010
影响因子：
3.5
通讯作者：
L. Tuomi
中科院分区：
文献类型：
--
作者：
H. Pettersson;K. Kahma;L. Tuomi
在倾斜取波条件下，主动增长波的方向强烈地受取波几何的控制。这一影响在波罗的海狭长的芬兰湾被发现，在那里它显著地改变了定向波气候。采用三种不同的波浪分量方向耦合假设模型，分析了海湾中波浪的方向性行为的物理机制。当倾斜提取几何较窄时，方向解耦模型正确地产生了光谱峰值处的方向，但当提取几何较宽时，方向解耦模型给出的方向比观察到的弱。Donelan方法在定义明确的倾斜取波条件下很好地估计了光谱峰处的方向，但高估了从更复杂的海岸线波浪生长过程中较长的取波分量。无论是解耦模型还是多内兰模型，都没有再现所观察到的方向随频率的变化。表演..。
Abstract In slanting fetch conditions the direction of actively growing waves is strongly controlled by the fetch geometry. The effect was found to be pronounced in the long and narrow Gulf of Finland in the Baltic Sea, where it significantly modifies the directional wave climate. Three models with different assumptions on the directional coupling between the wave components were used to analyze the physics responsible for the directional behavior of the waves in the gulf. The directionally decoupled model produced the direction at the spectral peak correctly when the slanting fetch geometry was narrow but gave a weaker steering than observed when the fetch geometry was broader. The method of Donelan estimated well the direction at the spectral peak in well-defined slanting fetch conditions, but overestimated the longer fetch components during wave growth from a more complex shoreline. Neither the decoupled nor the Donelan model reproduced the observed shifting of direction with the frequency. The perform...
胀
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--