東京大学
丹羽 淑博
Niwa Yoshihiro

海洋内部の微細物理過程の解明を目指し、内部重力波や乱流混合過程の研究を数値実験や観測を行い進めている。海洋の物理現象を理解するための教育教材の開発に積極的に取り組んでいる。

○役職特任准教授
○学位理学博士
○部局東京大学大学院理学系研究科 附属臨海実験所
○専攻等地球惑星科学専攻
○専門分野海洋物理学
論文および著作
  • Toshiyuki Hibiya, Yoshihiro Niwa, Kensuke Nakajima, and Nobuo Suginohara: Direct numerical simulation of the roll-off range of internal wave shear spectra in the ocean, Journal of Geophysical Research, 101, 14123-14129, 1996.
  • Yoshihiro Niwa, and Toshiyuki Hibiya: Nonlinear processes of energy transfer from traveling hurricanes to the deep ocean internal wave field, Journal of Geophysical Research, 102, 12469-12477, 1997.
  • Toshiyuki Hibiya, Yoshihiro Niwa, and Kayo Fujiwara: Numerical experiments of nonlinear energy transfer within the oceanic internal wave spectrum, Journal of Geophysical Research, 103, 18715-18722, 1998.
  • Yoshihiro Niwa, and Toshiyuki Hibiya: Response of the deep ocean internal wave field to traveling midlatitude storms as observed in long term current measurements, Journal of Geophysical Research, 104, 10981-10989, 1999.
  • Maki Nagasawa, Yoshihiro Niwa, and Toshiyuki Hibiya: Spatial and temporal distribution of the wind-induced internal wave energy available for deep water mixing in the North Pacific, Journal of Geophysical Research, 105, 13933-13943, 2000.
  • Yoshihiro Niwa, and Toshiyuki Hibiya: Spatial distribution of the M2 internal tide in the North Pacific predicted using a three-dimensional numerical model, Journal of the Geodetic Society of Japan, 47, 711-718, 2001a.
  • Yoshihiro Niwa, and Toshiyuki Hibiya: Numerical study of the spatial distribution of the M2 internal tide in the Pacific Ocean, Journal of Geophysical Research, 106, 22441-22449, 2001b.
  • Toshiyuki Hibiya, Maki Nagasawa, and Yoshihiro Niwa: Nonlinear energy transfer within the oceanic internal wave spectrum at mid and high latitudes, Journal of Geophysical Research, 107, DOI:10.1029/2001JC001210, 2002.
  • Maki Nagasawa, Toshiyuki Hibiya, Yoshihiro Niwa, Michio Watanabe, Yutaka Isoda, Syogo Takagi, and Yoshihiko Kamei: Distribution of fine-scale shear in the deep waters of the North Pacific obtained using expendable current profilers, Journal of Geophysical Research, 107, DOI:10.1029/2002JC001376, 2002.
  • Yoshihiro Niwa, and Toshiyuki Hibiya, Three-dimensional numerical simulation of M2 internal tides in the East China Sea, Journal of Geophysical Research, 109, DOI: 10.1029/2003JC001923, 2004.
  • Naoki Furuichi, Toshiyuki Hibiya, and Yoshihiro Niwa: Bispectral analysis of energy transfer within the two-dimensional oceanic internal wave field, Journal of Physical Oceanography, 35, 2104-2109, 2005.
  • Nobuyuki Iwamae, Toshiyuki Hibiya, and Yoshihiro Niwa: Numerical study of enhanced energy dissipation near a seamount, Journal of Oceanography, 62, 851-858, 2006.
  • Toshiyuki Hibiya, Maki Nagasawa, and Yoshihiro Niwa: Global mapping of diapycnal diffusivity in the deep ocean based on the results of expendable current profiler (XCP) surveys, Geophysical Research Letters, 33, DOI:10.1029/2005GL025218, 2006.
  • Yuki Tanaka, Toshiyuki Hibiya, and Yoshihiro Niwa: Estimates of tidal energy dissipation and diapycnal diffusivity in the Kuril Straits using TOPEX/POSEIDON altimeter data, Journal of Geophysical Research, 112, DOI: 10.1029/2007JC004172, 2007.
  • Toshiyuki Hibiya, Maki Nagasawa, and Yoshihiro Niwa: Latitudinal dependence of diapycnal diffusivity in the thermocline observed using a microstructure profiler, Geophysical Research Letters, 34, DOI: 10.1029/2007GL032323, 2007.
  • Naoki Furuichi, Toshiyuki Hibiya, and Yoshihiro Niwa: Model-predicted distribution of wind-induced internal wave energy in the world's oceans, Journal of Geophysical Research, 113, DOI:10.1029/2008JC004768, 2008.
  • Yoshifumi Sugiyama, Yoshihiro Niwa, and Toshiyuki Hibiya: Numerically reproduced internal wave spectra in the deep ocean, Geophysical Research Letters, 36, DOI: 10.1029/2008GL036825, 2009.
  • 丹羽 淑博: 外洋の内部波とその海洋力学における役割, 海と生物, 28, 337-345, 2003.
  • 丹羽 淑博: 深層乱流に供給される内部波エネルギーの空間分布に関する数値的研究 (2004年度日本海洋学会岡田賞受賞記念論文), 海の研究, 15, 395-417, 2006.
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