论文标题
由水平温度和盐度梯度从上方引起的热盐交织
Thermohaline interleaving induced by horizontal temperature and salinity gradients from above
论文作者
论文摘要
在海洋中，热盐侵入和交织层出现在水质阵线内，水平温度和盐度梯度提供了重要的水平混合机制。在这里，我们报告了一种新型的热盐侵入，该侵入率是由于垂直方向上不同的双重扩散速率而在相邻深度的流体层中的水平温度和盐度梯度驱动的。一旦建立，入侵层具有与梯度区域内发现的相似行为。这种侵入过程会产生额外的水平热和盐度通量向寒冷和新鲜的一面，但将密度异常转移到温暖而咸的一面。这些发现极大地扩展了可以观察到嗜热盐侵入的情况。
In the Ocean, thermohaline intrusions and interleaving layers occur within the water mass fronts with horizontal temperature and salinity gradients, which provide an important horizontal mixing mechanism. Here we report a new type of thermohaline intrusion which is driven by the horizontal temperature and salinity gradients in the fluid layers at adjacent depths due to the different double diffusive mixing rates in the vertical direction. Once established, the intrusion layers share similar behaviors as those found within the gradient regions. Such intrusion process generates extra horizontal heat and salinity fluxes towards the cold and fresh side, but transfer density anomaly towards the warm and salty side. These findings greatly extend the circumstance where thermohaline intrusions may be observed.
