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首页> 外文期刊>Journal of Physical Oceanography >The Western Alboran Gyre: An Analysis of Its Properties and Its Exchange with Surrounding Water
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The Western Alboran Gyre: An Analysis of Its Properties and Its Exchange with Surrounding Water

机译：西尔博尔南·戈尔德：与周边水的性质分析及其交流

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摘要

One of the largest and most persistent features in the Alboran Sea is the Western Alboran Gyre (WAG), an anticyclonic recirculation bounded by the Atlantic Jet (AJ) to the north and the Moroccan coast to the south. Eulerian budgets from several months of a high-resolution model run are used to examine the exchange of water across the Eulerian WAG's boundary and the processes affecting the salinity, temperature, and vorticity of the WAG. The volume transport across the sides of the WAG is found to be related to vertical isopycnal movement at the base of the gyre. Advection is found to drive a decay in the salinity minimum and anticyclonic vorticity of the Eulerian WAG. Given the large contributions of advection, a Lagrangian analysis is performed, revealing geometric aspects of the exchange that are hidden in an Eulerian view. In particular, stable and unstable manifolds identify a stirring region around the outer reaches of the gyre where water is exchanged with the WAG on a time scale of weeks. Its complement is an inner core that expands with depth and exchanges water with its surroundings on much longer time scales. The 3D evolution of one parcel, or lobe, of water as it enters the WAG is also described, identifying a general Lagrangian subduction pathway.
机译：阿尔博斯海中最大和最持久的特色之一是西尔博兰西部（摇摆），由大西洋喷气机（AJ）界定的北部和摩洛哥海岸的反气旋再循环。来自几个月的高分辨率模型运行的Eulerian预算用于检查欧拉WAG边界上的水交换，以及影响摇摆的盐度，温度和涡流的过程。发现摇头侧面的体积传输与纱线底部的垂直等矩阵运动有关。发现平流在歌曲摇摆的盐度最小和反气旋涡旋中推动衰减。鉴于对平流的大贡献，进行了拉格朗日分析，揭示了隐藏在欧拉视图中的交换的几何方面。特别地，稳定且不稳定的歧管围绕围绕地区的外部到达的搅拌区域，其中水在几周的时间等级与摇摆地与摇摆交换。它的补充是一个内核，在深度上扩展，并在更长的时间尺度上与周围的环境交换水。还描述了一个包裹或叶片进入摇摆的3D演变，识别一般拉格朗日俯冲途径。

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