Abstract

In this investigation, the General Ocean Turbulent Model (GOTM) was used for the investigation of turbulent processes of a water column over a study site in the Oman Sea. The used method appropriately reproduces the main features of the study area, allows for a realistic view of the turbulence, and thus makes it possible to compare the Mixed Layer Depth (MLD) in all seasons. The MLD varies from 150 m in spring to 200 m in autumn. This simulation presented that the production of Turbulent Kinetic Energy (TKE) in the seawater column in the Oman Sea has seasonal changes. In the surface layer, TKE is small which is produced by low quantities of shear production, then it is conserved by the wind stress on the mixed layer and buoyancy production. In the deep layer, TKE is produced only by buoyancy. Calculated Prandtl number in all seasons presented that the turbulent diffusivity of temperature is dominant in most parts of water column, except in a thin layer which forms approximately between the depths of 150–200 m.

中文翻译：

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阿曼海的湍流过程：数值研究

摘要

在本次调查中，通用海洋湍流模型 (GOTM) 用于研究阿曼海研究地点上空水柱的湍流过程。所使用的方法适当地再现了研究区域的主要特征，允许真实地观察湍流，从而可以比较所有季节的混合层深度（MLD）。 MLD 变化范围为春季 150 m 至秋季 200 m。该模拟表明，阿曼海海水柱中湍流动能（TKE）的产生具有季节性变化。在表层，TKE较小，这是由少量的剪切产生的，然后由混合层上的风应力和浮力产生而守恒。在深层，TKE 仅由浮力产生。计算的所有季节的普朗特数表明，除了大约在 150-200 m 深度之间形成的薄层外，温度的湍流扩散率在大部分水体中占主导地位。