On the transformation of Pacific Water into Indonesian Throughflow Water by internal tidal mixing
On the transformation of Pacific Water into Indonesian Throughflow Water by internal tidal mixing
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DOI：
10.1029/2006gl028405
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发表时间：
2007-02-21
影响因子：
5.2
通讯作者：
Molcard, Robert
中科院分区：
文献类型：
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作者：
Koch-Larrouy, Ariane;Madec, Gurvan;Molcard, Robert
印度尼西亚群岛的特点是强烈的内潮，这些内潮被困在群岛的不同半封闭海域中。利用潮汐模式的结果，发展了相应的三维潮汐混合参数化。由此得到的平均垂直扩散率为1.5 cm（2）/s，这与从观测中推断的估计值完全一致。在一个区域OGCM介绍，参数化改善了在不同的印度尼西亚海域的水团特性，这表明混合的水平和垂直分布有足够的规定。特别是，流入水的盐度最大值沿主要路线沿着降低，主要是在德瓦康岩床区域。但它也在哈马黑拉海和塞拉姆海被抹去，这是东线的入口，这样咸的沃茨就不会渗透到班达海。结果表明，模拟的印尼海流与观测值吻合较好。
The Indonesian archipelago is characterized by strong internal tides, which are trapped in the different semi-enclosed seas of the archipelago. Using tidal model results a parameterization of the associated 3d tidal mixing is developed. The resulting average vertical diffusivity is 1.5 cm(2)/s, which independently agrees with the estimates inferred from observations. Introduced in a regional OGCM, the parameterization improves the water mass characteristics in the different Indonesian seas, suggesting that the horizontal and vertical distributions of the mixing are adequately prescribed. In particular, the salinity maximum of the inflow water is reduced along the main route, mainly in the Dewakang sill area. But also it is erased in the Halmahera and Seram seas, the entrance of the eastern route, so that salty waters doesn't penetrate the Banda Sea. As a result the simulated Indonesian Throughflow Water are in good agreement with observations.