Mediterranean Outflow Mixing and Dynamics
Mediterranean Outflow Mixing and Dynamics
复制标题
地中海流出混合和动态
作者：
J. Price;M. Baringer;R. Lueck;G. Johnson;I. Ambar;G. Parrilla;Alain Cantos;M. Kennelly;T. Sanford
地中海产生一股咸味、浓密的流出物，当它首先开始沿着加的斯湾东部的大陆坡下降时，这种流出物受到夹带的强烈影响。水流加速至每秒 1.3 米，使内部弗劳德数提高到 1 以上，并且在其整个厚度上呈现强烈的湍流。由于夹带了含盐量较低的北大西洋中部海水，外流损失了大约一半的密度异常，并且其运输量大约增加了一倍。在下游 100 公里内，水流受到科里奥利力的作用而转向，直到其在阻尼地转平衡中几乎平行于地形流动。混合的地中海流出继续向西，缓慢地沿着大陆坡下降，直到在温跃层中变成中性浮力，成为重要的水团。
The Mediterranean Sea produces a salty, dense outflow that is strongly modified by entrainment as it first begins to descend the continental slope in the eastern Gulf of Cadiz. The current accelerates to 1.3 meters per second, which raises the internal Froude number above 1, and is intensely turbulent through its full thickness. The outflow loses about half of its density anomaly and roughly doubles its volume transport as it entrains less saline North Atlantic Central water. Within 100 kilometers downstream, the current is turned by the Coriolis force until it flows nearly parallel to topography in a damped geostrophic balance. The mixed Mediterranean outflow continues westward, slowly descending the continental slope until it becomes neutrally buoyant in the thermocline where it becomes an important water mass.