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The energetics of internal tides at the Luzon Ridge

机译：Luzon Ridge内部潮汐的能量学

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摘要

Three-dimensional simulations of the M2 and K1 internal tides using the MIT General Circulation Model (MITgcm) configured for the Luzon Ridge are presented. The energetics of M2 and K1 internal tides are studied by analyzing the full barotropic and baroclinic energy budgets and the barotropic and baroclinic kinetic energy budgets. The conversion rate of M2 tide is also investigated using the approximate expression by Nycander (J Geophys Res 110:C10028, 2005). The results show that about 15.10 GW is transferred from the M2 barotropic tide to the M2 baroclinic tide at the Luzon Ridge, which is about 88% of the loss by the barotropic tide. The net baroclinic energy flux is about 4.46 GW, and the total dissipation is about 11.33 GW. Additionally, it is found that the potential energy changes are small in the full energy budget when comparing the result between the full barotropic and baroclinic energy budgets and the barotropic and baroclinic kinetic energy budgets. The expression by Nycander (J Geophys Res 110:C10028, 2005) is found to be sensitive to the model resolution, but may underestimate the conversion rate at the Luzon Ridge at high resolution compared with the model results.
机译：呈现了使用为吕宋岭配置的麻省理工学院通用循环模型（MITGCM）的M2和K1内部潮汐的三维模拟。通过分析全部管制和曲金能预算和波奇吡咯和氨基甲状腺动能预算来研究M2和K1内潮的能量。使用Nycander的近似表达式研究了M2潮汐的转化率（J Geophys Res 110：C10028,2005）。结果表明，大约15.10GW从M2波高潮中转移到吕宋岭的M2氨基氯葡萄酒潮，这是波衡潮损失的约88％。净曲金能量通量约为4.46 GW，总耗散约为11.33 GW。此外，发现在比较完整的压力学和曲金能预算和波奇磷酸和双核动态能量预算的结果时，全能预算中的潜在能量变化很小。发现NYCANDER（J Geophys Res 110：C10028,2005）的表达对模型分辨率敏感，但与模型结果相比，可以低估高分辨率吕宋岭的转换率。

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