The Red Sea Water is a warm and salty water produced in the Red Sea by evaporation induced by strong solar radiation. This dense water mass exits the Red Sea through the Strait of Bab El Mandeb, and enters the Gulf of Aden as a density current between 400 and 1000 metre depth. In the Gulf of Aden, in situ and satellites observations have shown the impact of the deeply reaching eddies dominating the mesoscale dynamics, on the spreading of the Red Sea Water. In this paper, we study the life cycle of these mesoscale eddies in the Gulf of Aden by using a regional primitive equation model at mesoscale resolution, and an eddy-tracking algorithm. The mesoscale anticyclonic eddies are formed at the mouth of the Gulf of Aden, and subsequently drift westward into the gulf. Mesoscale anticyclones are long-lived compared to the cyclones. The cyclones result from the interaction of anticyclones with the coast and the sloping topography. The wind stress, the bathymetry and the surrounding eddy field drive the life cycle of eddies. Finally, Kelvin and internal waves are triggered along the northern and southern coasts.

中文翻译：

---

亚丁湾中尺度涡旋的生命周期

红海水是由强烈的太阳辐射引起的蒸发在红海中产生的温暖和咸水。这股密集的水团通过曼德海峡离开红海，并以 400 至 1000 米深的密度流进入亚丁湾。在亚丁湾，原位观测和卫星观测表明，主导中尺度动力学的深入涡流对红海水的扩散产生了影响。在本文中，我们使用中尺度分辨率的区域原始方程模型和涡流跟踪算法研究了亚丁湾中这些中尺度涡流的生命周期。中尺度反气旋涡流在亚丁湾口形成，随后向西漂移进入海湾。与气旋相比，中尺度反气旋的寿命更长。气旋是反气旋与海岸和倾斜地形相互作用的结果。风应力、测深和周围的涡流场驱动着涡流的生命周期。最后，沿北部和南部海岸触发开尔文波和内波。