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首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >A well-mixed warm water column in the central Bohai Sea in summer: Effects of tidal and surface wave mixing
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A well-mixed warm water column in the central Bohai Sea in summer: Effects of tidal and surface wave mixing

机译：夏季中部渤海中混合均匀的温水柱：潮汐和面波混合的影响

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摘要

A well-mixed water column is observed over a 20 m ridge in the central Bohai Sea, surrounded by stratified water of much colder temperatures. We use a three-dimensional model to investigate its formation mechanisms. The results show that both tidal and surface wave mixing are important for homogenizing the water column, the former reaching 10 m above the bottom and the latter penetrating 10 m beneath the sea surface. The ridge enhances the intensity and vertical extent of tidal mixing, allowing it to connect with the downward penetration of wave mixing. Removing either the bathymetric ridge or wave mixing fails to reproduce this well-mixed water column. The inclusion of the surface wave mixing warms the bottom water by 5–6°C in both the warm water column and surrounding cold water. Wave mixing displays a maximum in the central Bohai Sea basin, which is confirmed by satellite altimeter data and a wave model simulation.
机译：在渤海中部20 m的山脊上观察到水柱充分混合，周围有温度低得多的分层水包围。我们使用三维模型来研究其形成机理。结果表明，潮汐和面波混合对于均匀化水柱都很重要，前者到达底部上方10 m，后者穿透海面以下10 m。脊提高了潮汐混合的强度和垂直程度，使其与波浪混合的向下渗透有关。除去测深岭或波峰混合均无法重现此混合良好的水柱。包括表面波混合在内的温水塔和周围的冷水都将底部水加热了5–6°C。混波在渤海中部海域显示出最大值，这已通过卫星高度计数据和波浪模型模拟得到证实。

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