Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

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Papers 【 display / non-display 】

Papers 【 display / non-display 】

• The Kuroshio flowing over seamounts and associated submesoscale flows drive 100-km-wide 100-1000-fold enhancement of turbulence

  Takeyoshi Nagai and Daisuke Hasegawa and Eisuke Tsutsumi and Hirohiko Nakamura and Ayako Nishina and Tomoharu Senjyu and Takahiro Endoh and Takeshi Matsuno and Ryuichiro Inoue and Amit Tandon , 2021.08

  Communications Earth & Environment

  DOI

  OACIS Paper URL

• Mesoscale Warm-Core Eddies Drive Interannual Modulations of Swordfish Catch in the Kuroshio Extension System

  Durán Gómez, G.S. Nagai, T. Yokawa, K. , 2020.08

  Frontiers in Marine Science

  DOI

• First Evidence of Coherent Bands of Strong Turbulent Layers Associated with High-Wavenumber Internal-Wave Shear in the Upstream Kuroshio (vol 7, 2017)

  Nagai Takeyoshi, Hasegawa Daisuke, Tanaka Takahiro, Nakamura Hirohiko, Tsutsumi Eisuke, Inoue Ryuichiro, Yamashiro Toru , 2018.06

  SCIENTIFIC REPORTS

  DOI

• Evidence of enhanced double-diffusive convection below the main stream of the Kuroshio Extension

  Nagai Takeyoshi, Inoue Ryuichiro, Tandon Amit, Yamazaki Hidekatsu , 2015.12

  JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS

  DOI

• Spontaneous Generation of Near-Inertial Waves by the Kuroshio Front

  Nagai Takeyoshi, Tandon Amit, Kunze Eric, Mahadevan Amala , 2015.09

  JOURNAL OF PHYSICAL OCEANOGRAPHY

  DOI

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Books 【 display / non-display 】

Books 【 display / non-display 】

• Kuroshio Current: Physical, Biogeochemical and Ecosystem Dynamics (Takeyoshi Nagai, Hiroaki Saito, Koji Suzuki, Motomitsu Takahashi Ed)

  Takeyoshi Nagai, Hiroaki Saito, Koji Suzuki, Motomitsu Takahashi , 2019.06

  AGU-Wiley , 0-0

• Kuroshio current : physical, biogeochemical, and ecosystem dynamics

  長井 健容, 齊藤 宏明, 鈴木 光次, 高橋 素光 , 2019

  Wiley , 0-0

• Kuroshio current : physical, biogeochemical, and ecosystem dynamics

  長井 健容, 齊藤 宏明, 鈴木 光次, 高橋 素光 , 2019

  Wiley , 0-0

• Kuroshio current : physical, biogeochemical, and ecosystem dynamics

  長井 健容, 齊藤 宏明, 鈴木 光次, 高橋 素光 , 2019

  Wiley , 0-0

• One-dimensional models（査読付）, In: Encyclopedia of Ocean Sciences, Third Edition, Cochran, J. Kirk; Bokuniewicz, J. Henry; Yager, L. Patricia (Eds.)

  Nagai, T., G. Auger, H. Burchard, K. Denman, H. Yamazaki , 2018.10

  Elsevier , Mixing associated with submesoscale processes , 0-0

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

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

• CO2吸収ホットスポットにおける海洋循環と生物生産・分解

  Project Period (FY)： 2024/04  -  2029/03  Investigator(s): 遠山 勝也

  Grant-in-Aid for Transformative Research Areas(A) (Planned Research)  Co-Investigator  24H02224 

• Impacts of cyclonic eddies generated by the Kuroshio flowing closely to the coast on the nutrient supply and low tropic level ecosystem

  Project Period (FY)： 2023/04  -  2025/03  Investigator(s): 長井健容

  Grant-in-Aid for Transformative Research Areas(A) (Publicly Research)  Principal Investigator  23H04818 

• Submesoscale Mixing Processes caused by Northward Shifted Kuroshio near the Yakushima and Tanegashima Islands and their chemical and biological impacts

  Project Period (FY)： 2023/04  -  2027/03  Investigator(s): 長井 健容

  Grant-in-Aid for Scientific Research(B)  Principal Investigator  23K25940 

• Basic research on AI system for ocean float observation

  Project Period (FY)： 2020/07  -  2024/03  Investigator(s): 北出 裕二郎

  Grant-in-Aid for challenging Research (Development)  Co-Investigator  20K20634 

• Resolving multi-scale mixing processes and their impacts using a twin tow-yo microstructure profiling system

  Project Period (FY)： 2019/04  -  2023/03  Investigator(s): NAGAI TAKEYOSHI

  Grant-in-Aid for Scientific Research(B)  Principal Investigator  19H01965 

  A free-fall tow-yo turbulence profiler, Underway-VMP (UVMP), and a free-fall tow-yo biochemical profiler that can measure nitrate concentrations necessary for phytoplankton growth in the field using ultraviolet light have been developed and observation methods established. Observations using these profilers showed that turbulence 100-1000 times larger than typical thermocline values were seen over 100 km, and the results were published in Comm Earth & Environment in 2021. These observations were used again in the Tokara Strait in September 2020 and showed that the Kuroshio Current flowing south of Kyushu is a very large turbulence and nutrient hotspot.

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Lesson Subject 【 display / non-display 】

Lesson Subject 【 display / non-display 】