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Realistic modelling of shelf-estuary regions: A multi-corner configuration for Baia de Todos os Santos

机译：陆架河口区域的逼真建模：Baia de Todos os Santos的多角配置

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A very high-resolution modelling configuration was created for the estuary of Baia de Todos os Santos - BTS, Brazil (300 to 400 m), and adjacent coastal waters (600 to 1200 m). The adoption of a multi-corner domain approach allowed the variable spatial resolution required to resolve the shelf, the bay and their interactions. Seven years were simulated using realistic oceanic, atmospheric and riverine forcing. Model validation was done against observations showing the model skill to reproduce the thermohaline field, the tidal currents, as well as the variability of the free surface at tidal and sub-tidal time scales. The results provide the first representation of the tidal wave propagation along the bay, in terms of maps of amplitudes, phases and ellipses of the barotropic currents for the main tidal constituents. By analysing the residual currents at different depths, in terms of averages over the simulation period, several prominent structures were identified and named: (i) Salvador eddy (up to 0.2 m s(-1)); (ii) St Antonio current (up to 0.45 m s(-1)); (iii) Salvador current (up to 0.5 m s(-1)); (iv) Itaparica eddy (up to 0.2 m s(-1)); (v) Ilha dos Frades southern eddy (up to 0.1 m s(-1)); and (vi) Ilha dos Frades northern eddy (up to 0.2 m s(-1)). The model set-up proved to be highly efficient and robust simulating the BTS shelf-estuary region and such an approach may be suitable to other estuarine systems.
机译：为巴西的防弹少年团Baia de Todos os Santos的河口（300至400 m）和邻近的沿海水域（600至1200 m）创建了非常高分辨率的建模配置。多角域方法的采用允许解决架子，海湾及其相互作用所需的可变空间分辨率。使用现实的海洋，大气和河流强迫模拟了七年。对照观察进行模型验证，这些观察表明模型技能可以再现热盐场，潮汐流以及潮汐和潮汐下时间尺度的自由表面变化。结果提供了潮汐沿海湾传播的第一个表示形式，即主要潮汐成分的正压流的振幅，相位和椭圆图。通过分析不同深度的剩余电流，根据模拟期间的平均值，确定并命名了几个突出的结构：（i）Salvador涡流（最大0.2 m s（-1））； （ii）圣安东尼奥海流（不超过0.45 m s（-1））; （iii）萨尔瓦多电流（不超过0.5 m s（-1））； （iv）Itaparica涡流（不超过0.2 m s（-1））； （v）Ilha dos Frades南部涡流（不超过0.1 m s（-1））； （vi）Ilha dos Frades北部涡流（最高0.2 m s（-1））。事实证明，该模型的建立是高效且鲁棒的，可以模拟BTS陆架河口区域，这种方法可能适用于其他河口系统。

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