The numerical studies on the ocean turbulent mixing processes near the generation sites of internal gravity waves

内重力波发生点附近海洋湍流混合过程的数值研究

• 批准号: 22540447
• 负责人: NIWA Yoshihiro
• 金额: $ 2.58万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540447/
• 关键词: 内部波; 乱流混合; 内部潮汐波; 近慣性内部波; 乱流; パラメタ リゼーション; 海洋深層大循環; 内部重力波; VLES; 近慣性内部重力波; 乱流パラメタリゼーション; 非線形相互作用; 乱流パラメタリセージョン

The excitation of intense turbulent mixing in the ocean is concentrated near the generation sites of internal gravity waves such as within the surface layers under atmospheric disturbances or over prominent topographic features interacting with barotropic tidal currents. In this study, we first carry out Large Eddy Simulation (LES) to investigate turbulent mixing processes in the surface ocean caused by strong wind forcing. The results of LES are used to evaluate the performance of existing turbulence parameterization models. Next, we carry out three-dimensional global numerical simulations of internal tidal waves generated over prominent topographic features, and estimate the global distribution of internal tidal energy conversion rate in the limit of zero grid spacing.

海洋中强烈湍流混合的激发集中在重力内波的产生地点附近，例如在大气扰动下的表层内，或在与正压潮流相互作用的突出地形特征上方。在这项研究中，我们首先用大涡模拟(LES)来研究强风强迫引起的表层海洋中的湍流混合过程。大涡模拟的结果被用来评估现有的湍流参数化模式的性能。接下来，我们对在突出地形上产生的内潮波进行了三维全球数值模拟，并估计了在零网格间距限制下内潮能转换率的全球分布。

项目成果

全球数値シミュレーションに基づく深海の乱流混合過程に供給しうる内部潮汐波エネルギーの見積もりとその水平格子間隔依存性について

基于全局数值模拟的深海湍流混合过程内潮汐能量估计及其对水平网格间距的依赖性

• 发表时间: 2011
• 作者: 牧野智也;他5名(民田晴也);丹羽淑博,日比谷紀之
• 通讯作者: 丹羽淑博,日比谷紀之

Estimation of internal tide energyavailable for deep ocean mixing based on three-dimensional global numerical simulations

基于三维全球数值模拟的深海混合可用内潮能估算

• 发表时间: 2011
• 作者: Yoshihiro Niwa;Toshiyuki Hibiya
• 通讯作者: Toshiyuki Hibiya

Generation of baroclinic tide energy in global three-dimensional numerical models with different spatial grid resolution

不同空间网格分辨率的全球三维数值模型中斜压潮汐能的生成

• 发表时间: 2013
• 作者: Niwa;Y.;and T. Hibiya
• 通讯作者: and T. Hibiya

Estimation of baroclinic tide energy available for deep ocean mixing based on three-dimensional global numerical simulations

• DOI: 10.1007/s10872-011-0052-1
• 发表时间: 2011-08-01
• 期刊: JOURNAL OF OCEANOGRAPHY
• 影响因子: 2.3
• 作者: Niwa, Yoshihiro;Hibiya, Toshiyuki
• 通讯作者: Hibiya, Toshiyuki

Assessment of turbulence closure models for resonant inertial response in the oceanic mixed layer using a large eddy simulation model

• DOI: 10.1007/s10872-011-0095-3
• 发表时间: 2012-04-01
• 期刊: JOURNAL OF OCEANOGRAPHY
• 影响因子: 2.3
• 作者: Furuichi, Naoki;Hibiya, Toshiyuki;Niwa, Yoshihiro
• 通讯作者: Niwa, Yoshihiro