Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Revisiting Tide‐Induced Near‐Field Mixing in the Abyssal Ocean

  Toshiyuki Hibiya, Yuki Tanaka, Taira Nagai, Yusuke Hirano , 2024.11

  Geophysical Research Letters

  DOI

• Superinertial Internal Tides Propagating along the Coast: Dynamics and Energetics Revealed through Topographic Modes

  Yuki Tanaka , 2024.11

  Journal of Physical Oceanography

  DOI

• Energy Conversion Rate from Subinertial Surface Tides to Internal Tides

  Yuki Tanaka , 2023.05

  Journal of Physical Oceanography

  DOI

• Stability of a Flow Over Bottom Topography: A General Condition and a Linear Analysis in a Two‐Layer Quasi‐Geostrophic Model With a Possible Application to a Kuroshio Meander

  Yuki Tanaka , 2021.12

  Journal of Geophysical Research: Oceans

  DOI

• Role of tide-induced vertical mixing in the deep Pacific Ocean circulation

  Takao Kawasaki, H. Hasumi, Y. Tanaka , 2021.01

  Journal of Oceanography

  DOI

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• 「地形性モード」を考慮した潮汐・風起源の内部波の励起率・散逸率の全球分布の解明

  Project Period (FY)： 2025/04  -  2029/03  Investigator(s): 田中 祐希

  Grant-in-Aid for Scientific Research(B)  Principal Investigator  25K01070 

• 「沿岸捕捉波」と「地形の影響を受けた傾圧不安定」による湾と外洋との海水交換

  Grant-in-Aid for Transformative Research Areas (A)

  Project Period (FY)： 2025/04  -  2027/03  Investigator(s): 田中 祐希

  Other  Principal Investigator  25H01907 

• 海嶺上における内部風下波の発生を組込んだ乱流ホットスポットのグローバルマッピング

  Project Period (FY)： 2022/04  -  2026/03  Investigator(s): 日比谷 紀之

  Grant-in-Aid for Scientific Research(A)  Co-Investigator  22H00172 

• 狭い海洋フロントにおけるサブメソスケール現象の発生・発達に関わる不安定機構の解明

  Project Period (FY)： 2021/04  -  2025/03  Investigator(s): 田中 祐希

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  21K03664 

• Generation mechanism of tropical instability waves in the equatorial Pacific Ocean and their dissipation mechanism due to internal wave radiation

  Project Period (FY)： 2017/04  -  2022/03  Investigator(s): Tanaka Yuki

  Grant-in-Aid for Young Scientists(B)  Principal Investigator  17K14389 

  In the equatorial Pacific Ocean, there exists a prominent disturbance propagating westward at a speed of ~0.5 m/s with a wavelength of ~1000 km, called tropical instability waves. It is pointed out that a front of tropical instability waves radiates internal waves downward to the ocean interior, which induce turbulent mixing in the thermocline and control the heat transport from the surface to the deep layers, thereby affecting the sea surface temperature and air-sea interaction in the equatorial Pacific Ocean. In this study, the generation mechanism of tropical instability waves in the equatorial Pacific Ocean is clarified in terms of the coupling of two Rossby waves that are trapped in a local potential vorticity gradient in a narrow latitudinal band just north of the equator and are propagating in the opposite directions with each other. Furthermore, the radiation mechanism of internal waves from tropical instability waves is examined in detail.

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