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首页> 外文期刊>Journal of oceanography >Annual cycle of stratification and tidal fronts in the Bohai Sea: A model study
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Annual cycle of stratification and tidal fronts in the Bohai Sea: A model study

机译：渤海分层和潮汐锋面的年周期：一个模型研究

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摘要

In general, competition between buoyancy mechanisms and mixing dynamics largely determines the water column structure in a shelf sea. A three dimensional baroclinic ocean model forced by surface heat fluxes and the 2.5 order Mellor-Yamada turbulence scheme is used to simulate the annual cycle of the temperature in the Bohai Sea. The difference between the sea surface temperature (SST) and sea bottom temperature (SBT) is used to examine the evolution of its vertical stratification. It is found that the water column is well-mixed from October to March and that the seasonal thermocline appears in April, peaks in July and then weakens afterwards, closely following the heat budget. In addition, the Loder parameter based on the topography and tidal current amplitude is also computed in order to examine tidal fronts in the BS, which are evident in summer months when the wind stirring mechanism is weak.
机译：通常，浮力机制和混合动力之间的竞争在很大程度上决定着架子海中的水柱结构。利用地表热通量和2.5阶Mellor-Yamada湍流方案强迫建立的三维斜压海洋模型，模拟了渤海温度的年循环。海面温度（SST）和海底温度（SBT）之间的差异用于检查其垂直分层的演变。发现水柱在10月到3月之间混合充分，季节性的温跃层在4月出现，在7月达到顶峰，然后在紧随热量预算之后减弱。此外，还基于地形和潮汐电流幅值计算了Loder参数，以检查BS中的潮汐锋面，这在夏季的风搅拌机制较弱时很明显。

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