Global mapping of diapycnal mixing rates in the deep ocean for accurate modeling of the oceanic general circulation

深海二重混合率的全球绘图，用于精确模拟海洋环流

• 批准号: 09640520
• 负责人: HIBIYA Toshiyuki
• 金额: $ 1.54万
• 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: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09640520/
• 关键词: internal wave spectrum; energy cascade; nonlinear wave interactions; diapycnal diffusivity; ocean general circulation model; parameterization; near-inertial internal waves; midlatitude storms; 内部波スペクトル; 非線形干渉; 乱波拡散; 近慣性流; 倍慣性周波数; 中・深層

By using three-dimensional numerical models, the distribution of internal wave energy for diapycnalmixing in the deep waters of the North Pacific has been examined. During winter, energetic near-inertial waves are excited in response to the midlatitude storms in the western-central North Pacific (30ﾟN-45ﾟN). Thus excited waves propagate southward down to 10ﾟN-15ﾟN where the frequencies become double the local inertial frequencies so that large amount of wave energy cascades down to dissipation scales via Parametric Subharmonic Instability mechanism. The low-vertical-wavenumber double-inertial frequency internal waves are, in contrast, very weak at the times and locations of the previous microscale measurements so that the observed diapycnal diffusivity of-0.1 cm^2s^<-1> might not be representative.

通过在冬季检查的三维模型。 n-15 ies因此，通过参数亚谐波不稳定性机制将波能量级联向下降低到耗散量表。 Diapynal扩散率为-0.1 cm^2s^<-1>可能不是代表性的。

项目成果

Hibiya,T.,M.Ogasawara and Y.Niwa: "A numerical study of the fortnightly modulation of basin-ocean water axchange across a tidal mixiting zone" Journal of Physical Oceanography. 28・6. 1224-1235 (1998)

Hibiya, T., M. Ogasawara 和 Y. Niwa：“潮汐混合区盆地-海洋水轴变化的数值研究”物理海洋学杂志 28・6 (1998)。

Matsuno T., S.Yanao, S.Kanari, T.Hibiya, and C.Kobayashi: "Vertical mixing near the continental shelf break in the East China Sea and intrusion of shelf water into the Kuroshio" Proceedings of the JSPS-VCC Joint Seminar on Marine Science, ed.by Mohd.Zaki

Matsuno T.、S.Yanao、S.Kanari、T.Hibiya 和 C.Kobayashi：“东海大陆架断裂附近的垂直混合和陆架水侵入黑潮” JSPS-VCC 联合论文集

Hibiya, T., M.Ogasawara and Y.Niwa: "A numerical study of the fortnightly modulation of basin-ocean water exchange across a tidal mixing zone" Journal of Physical Oceanography. 28・6. 1224-1235 (1998)

Hibiya, T., M.Ogasawara 和 Y.Niwa：“潮汐混合区盆地-海洋水交换的每两周调节的数值研究”物理海洋学杂志 28・6 (1998)。

Hibiya,T., M.Ogasawara, and Y.Niwq: "A Numerical Study of the Fortnightly Modulation of Basin-Ocean Water Exchange Across a Tidal Mixing Zone" Journal of Physical Oceanography. 28・4. in press (1998)

Hibiya, T., M.Ogasawara, 和 Y.Niwq：“潮汐混合区盆地-海洋水交换的每两周调节的数值研究”物理海洋学杂志 28・4。

Matsuno T.,S.Yanao,S.Kanari,T.Hibiya,and C.Kobayashi: "Proceedings of the JSPS-VCC Joint Seminar on Marine Science,ed.by Mohd.Zaki Mohd.Said,Univ.Pertanian Malaysia,Malaysia" Vertical mixing near the continental shelf break in the East China Sea and intru

Matsuno T.、S.Yanao、S.Kanari、T.Hibiya 和 C.Kobayashi：《JSPS-VCC 海洋科学联合研讨会论文集》，作者：Mohd.Zaki Mohd.Said，马来西亚 Pertanian 大学，马来西亚