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Tides and sea level

机译：潮汐和海平面

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We investigated the dynamics of internal tides (ITs) around the Sofala shelf in the Mozambique Channel based on a 3-D hydrostatic numerical simulation. Two distinct sources of ITs and their basic propagation properties were identified. The depth-integrated period-averaged baroclinic energy flux indicated IT propagation away from the generation sites, particularly toward the east and the southeast. The convergence and divergence of the baroclinic energy flux were attributable mainly to special bathymetry features. Based on these results, 2-D nonhydro-static experiments were performed to simulate the generation and propagation of baroclinic tides along the main energy path. The model reproduced the two distinct generation processes of internal solitary waves (ISWs): the disintegration of the interfa-cial mode 1 IT and the beam-induced local generation in the open ocean. The IT beam emanated from the critical slope region, then moved downward toward the deep ocean, where it reflected at the bottom. It then impinged on the pycnocline and created a strong disturbance, which further evolved into an ISW after propagation of approximately 20 km. The simulation also captured the interlaced properties of the two wave types, 60-80 km from the shelf-break region, similar to the available observations.
机译：我们根据基于3-D静水压数值模拟调查了莫桑比克渠道中的Sofala架子周围的内部潮汐（ITS）的动态。鉴定了两个不同的源和基本传播性能。深度综合的周期平均条巴细胞能量通量表明其远离发电位点，特别是向东和东南部的繁殖。曲金能量通量的收敛性和分歧主要归因于特殊的沐浴特征。基于这些结果，进行了2-D非羟基静态实验以模拟沿着主能路径的曲金潮汐的产生和传播。该模型再现了内部孤立波（ISWS）的两个不同一致的过程：跨型 - CIAL模式1的崩解与开阔海洋中的光束诱导的局部产生。从临界斜坡区域散发出来的它光束，然后向下移动到深海，在那里反射在底部。它然后撞击斑块，并产生强烈的扰动，在传播约20公里之后进一步发展成ISW。仿真还捕获了两波形类型的隔行空间，距离货架间隔50-80 km，类似于可用的观察。

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    《Oceanographic Literature Review》 |2019年第4期|714-716|共3页
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