|yoshinobu wakata||Last modified date：2017.08.14|
Doctorate of Science
Field of Specialization
Dynamics of ocean and atmosphere
Ocean turbulence is investigated using Large Eddy Simulation (LES). Furthermore, the dynamic processes in the East China Sea has been researched through the numerical general circulation model, simple theoretical model, and satellite data analysis.
Research InterestsMembership in Academic Society
- Numerical Simulation of Ocean turbulence
keyword : ocean turbulence, Large Eddy Simulation
- Simulation of Venusian Atmosphere
keyword : Venusian Atmosphere
- Interannual variability of Kuroshio volume transport
keyword : Kurohio volume transport
1997.04Interannual variability of Kuroshio volume transport was investigated by an ocean general circulation model and a theoretical simple model..
- Seasonal variability of Sea surface height
keyword : Sea surface height, seasonal variability
1999.01～2002.03The seasonal variability of sea surface height in the Pacific ocean was investigated through the Satellite data analysis and model simulation..
- Resonance of equatorial Kelvin waves
keyword : equatorial waves, Kelvin waves, resonance
1997.01～2001.03The Kelvin wave, excited by an intraseasonal wind forcing with a 40-day period over the western Pacific Ocean, was simulated using an ocean general circulation model, and was investigated by the use of spectral analysis..
- Frequency-wavenumber spectra of equatorial waves detected from satellite altimeter data
keyword : equatorial waves, Kelvin waves, Rossby waves
2005.06～2009.03The sea surface height anomaly in the Pacific equatorial area was separated into equatorial modes using satellite altimeter data. The power-spectral density (PSD) was obtained for the east-west wavenumber and frequency for each separated mode. The PSD distribution was compared with the theoretical dispersion curve for the equatorial modes derived by Matsuno (1966). The low-order Rossby modes have a high-density distribution that is slightly lower than the theoretical dispersion curve, but the Kelvin mode and the higher Rossby modes have high-density distribution that almost matches each dispersion curve. Results of analyses of satellite observational data show that wave motion near the equator mainly shows characteristics of equatorial waves, especially for a short time scale..
- Ocean dynamics of East China Sea
keyword : East China Sea, sea surface height
2005.03Variability of the flow field in the East China Sea is investigated using an ocean general circulation model and satellite altimeter data..
|1.||T. Yamagata, Y. Wakata, Ocean-Atmosphere Interactions, Kluwer Aca. Pub., Chap.5, 143-195, 2003.02.|
|1.||和方 吉信, Some properties of tidal currents estimated from analytical and LES simulation studies, Journal of oceanography, 69, 2013.11.|
|2.||Y. Wakata, Dependence of seafloor boundary layer thickness on the overlying flow direction: a large eddy simulation study, Journal of Oceanography, 67, 667-673, 2011.10.|
|3.||Y. Wakata, Seasonal Variability of the Sea Surface Height in the East China Sea along the China Coast: A Model Study, Journal of Oceanography, 65, 281-286, 2009.04.|
|4.||A. Kido and Y. Wakata, Multiple equilibrium states appearing in a Venus-like atmospheric general circulation model, J. Meteor. Soc. Japan, 86, 969-979, 2008.12.|
|5.||Y. Wakata, Frequency-wavenumber spectra of equatorial waves detected from satellite altimeter data, Journal of Oceanography, 63, 483-190, 2007.06.|
|6.||Y. Wakata,T. Setou, I. Kaneko, H. Uchida, S. Imawaki, Interannual variability of the Kuroshio transport passing through the 137°E meridian in an OGCM related to the North Pacific windstress, Journal of Oceanography, 25-35, 2006.02.|
|7.||M. Ioualalen, Y. Wakata, Y, Kawahara, Y. Gouriou, D. Varillon, Variability of the sea surface salinity (SSS) in the western tropical Pacific: On the ability of an OGCM to simulate the SSS, and on the sampling of an operating merchant ship SSS network, Journal of Oceanography, 59, 1, 2003.01.|
- Advanced Marine Science and Technology Society
- Seasonal variability of sea surface height in the East China Sea and the Yellow Sea