Role of submesoscale instabilities in the lateral transport and mixing of freshwater

次尺度不稳定性在淡水横向传输和混合中的作用

• 批准号: 289832290
• 负责人: Professor Dr. Gualtiero Badin
• 金额: --
• 依托单位: Institut für Meereskunde (IMee)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289832290?language=en
• 关键词: Role; submesoscale; instabilities; lateral; transport

The cross-frontal transfer of freshwater will be studied using Lagrangian techniques derived from the study of chaotic dynamical systems, in particular through the identification of three dimensional Finite Time and Finite Separation Lyapunov Exponents (FTLEs and FSLEs respectively). FTLEs and FSLEs can provide a mapping of stirring and the detection of mixing barriers, that can be important for the lateral and vertical transfer of freshwater. FTLEs and FSLEs will be calculated using realistic numerical simulations of the North Atlantic at high resolution. Their distribution will be compared with the distribution of freshwater. Results will be compared with the results of lateral mixing from the observations from other projects within the Forschungsgruppe.

将使用从混沌动力系统研究中得出的拉格朗日技术，特别是通过确定三维有限时间和有限分离李雅普诺夫指数（分别为FTLE和FSLE），研究淡水的跨锋面转移。FTLEs和FSLEs可以提供搅拌的绘图和混合障碍的检测，这对于淡水的横向和垂直转移非常重要。FTLE和FSLE将使用北大西洋高分辨率的真实数值模拟进行计算。它们的分布将与淡水的分布进行比较。结果将与研究组内其他项目的观测结果进行比较。