IRD, UR 227 CoRéUs, BP A5, 98848 Nouméa cedex, New Caledonia.
Mar Pollut Bull. 2012;65(10-12):415-24. doi: 10.1016/j.marpolbul.2012.05.042. Epub 2012 Jul 15.
To implement a numerical model of atoll lagoon circulation, we characterized first the significant wave height (Hs) regime of the Western Tuamotu Archipelago and the local attenuation due to the protection offered by large atolls in the south Tuamotu. Altimetry satellite data and a WAVEWATCH III two-way nested wave model at 5 km resolution from 2000 to 2010 were used. Correlation between altimetry and model was high (0.88) over the period. According to the wave model, the archipelago inner seas experienced attenuated Hs year-long with a yearly average Hs around 1.3m vs a minimum of 1.6m elsewhere. The island shadow effect is especially significant in the austral winter. In contrast with southern atolls, Western Tuamotu experienced only few days per year of Hs larger than 2.5m generated by very high Hs southern swell, transient western local storms, strong easterly winds, and during the passage of distant hurricanes.
为了实现环礁泻湖环流的数值模型，我们首先描述了图阿莫图群岛西部的显著波高（Hs）状况，以及由于南部大环礁提供的保护而导致的局部衰减。我们使用了卫星测高数据和 2000 年至 2010 年期间分辨率为 5 公里的 WAVEWATCH III 双向嵌套波浪模型。在整个时期内，测高数据与模型之间的相关性很高（0.88）。根据波浪模型，该群岛内部海域全年的 Hs 都较低，年平均 Hs 约为 1.3m，而其他地方的最小值为 1.6m。岛屿阴影效应在南半球冬季尤为显著。与南部环礁不同，图阿莫图群岛西部每年只有几天的 Hs 大于 2.5m，这些 Hs 是由非常高的南部涌浪、短暂的西部局地风暴、强东风以及远距离飓风经过时产生的。
