Abstract
I feel greatly honoured to be awarded the Oceanographical Society of Japan Prize for 1989, and to be given this opportunity to look back at my past activities in research and education, and to present them as an example for younger members of our Society. Taking this opportunity, I acknowledge with sincere thanks many persons who guided me or who have collaborated with me since I was a young student up to the present.
My past academic history may be divided into three periods. In the first period (1955–71) at Kyoto University which included and eighteen month visit to the University of Chicago, I studied the production of air bubbles and droplets at the sea surface by wind-wave breaking, and the supply and distribution of the sea-salt particles from the sea to the atmosphere. The first nondimensional formulation of the form of single air bubbles floating at liquid surfaces was also presented. In the second period (1971–1981) I pursued, at the new Physical Oceanography Laboratory of Tohoku University, the concept of wind waves which are coupled with the wind. I proposed the 3/2-power law of wind waves and the high frequency part of the wind-wave spectral form which is proportional to the friction velocity of air and to the −4th power of frequency. Detailed investigations of wind-wave phenomena were also performed in wind-wave tunnels by introducing quantitative flow visualization techniques and together with my students, we elucidated ordered motions in the flows below and above wind waves. The Tohoku Wave Model was also developed in which the similarity laws of wind waves, which are strongly coupled with the air flow, were explicitly used. In the third period (1982-present), my area of interest has become broader and, togerther with my students and my overseas collaboratos, we are studying the connection of local physical processes at the air-sea boundary with studies of larger scale ocean-atmosphere interactions. One aspect of this has led to the organization of the Ocean Mixed Layer Experiment (OMLET, 1987–91), as part of the Japanese national programmes of the World Climate Research Programme. Another interest is the ongoing fundamental study of the use of satellite data for the estimation of air-sea fluxes over a broad area. Pursuit of the roots of the similarity laws of the windsea remains one of my present tasks.
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References
Battjes, J.A., T.J. Zitman and L.H. Holthuijsen (1987): A reanalysis of the spectra observed in JONSWAP. J. Phys. Oceanogr.,17, 1288–1295.
Blanchard, D.C. (1963): The electrification of the atmosphere by particles from bubbles in the sea. Progress in Oceanography,1, Pergamon Press, 71–202.
Chaen, M. (1973): Studies on the production of sea-salt particles on the sea surface. Mem. Fac. Fisheries, Kagoshima Univ.,22, 49–107.
Ebuchi, N., H. Kawamura and Y. Toba (1987): Fine structure of laboratory wind-wave surfaces studied by using an optical method. Boundary-Layer Meteorol.,39, 133–151.
Hatori, M. (1984a): Nonlinear properties of laboratory wind waves at energy containing frequencies, Part 1. Probability density distribution of surface elevation. J. Oceanogr. Soc. Japan,40, 1–11.
Hatori, M. (1984b): Nonlinear properties of laboratory wind waves at energy containing frequencies. Part 2. Detailed structures of power spectra and their evolution with fetch. J. Oceanogr. Soc. Japan,40, 12–18.
Hatori, M. and Y. Toba (1983): Transition of mechanically generated regular waves to wind waves under the action of wind. J. Fluid Mech.,130, 397–409.
Hatori, M., M. Tokuda and Y. Toba (1981): Experimental study on interaction between regular waves and wind waves—I. J. Oceanogr. Soc. Japan,37, 111–119.
Hayami, S. and Y. Toba (1958): Drop production by bursting of air bubbles on the sea surface (I). Experiments at still sea water surface. J. Oceanogr. Soc. Japan,14, 145–150.
Imai, Y., M. Hatori. M. Tokuda and Y. Toba (1981): Experimental study on strong interaction between regular waves and wind waves—II. Tohoku Geophys. J. (Sci. Rep. Tohoku Univ. Ser. 5),28, 87–103.
Joseph, P.S., S. Kawai and Y. Toba (1981): Ocean wave prediction by a hybrid model—Combination of single-parameterized wind waves with spectrally treated swells. Tohoku Geophys. J. (Sci. Rep. Tohoku Univ. Ser. 5),28, 27–45.
Kawai, S. (1979): Generation of initial wavelets by instability of a coupled shear flow and their evolution to wind waves. J. Fluid Mech.,93, 661–703.
Kawai, S. (1982): Structure of air flow over wind wave crests. Boundary-Layer Met.,23, 503–521.
Kawai, S., K. Okada and Y. Toba (1977): Support of the 3/2-power law and thegu*σ −4-spectral form for growing wind waves with field observational data. J. Oceanogr. Soc. Japan,33; 137–150.
Kawamura, H., K. Okuda, S. Kawai and Y. Toba (1981): Structure of turbulent boundary layer over wind waves in a wind wave tunnel. Tohoku Geophys. J., (Sci, Rep. Tohoku Univ. Ser. 5),28, 69–85.
Kawamura, H. and Y. Toba (1988): Ordered motion in the turbulent boundary layer over wind waves. J. Fluid Mech.,197, 105–138.
Koga, M. (1981): Direct production of droplet from breaking wind waves—Its observation by a multicolored overlapping exposure photographing technique. Tellus,33, 552–563.
Koga, M. (1982): Bubble entrainment in breaking wind waves. Tellus,34, 481–489.
Koga, M. (1984): Characteristics of a breaking wind-wave field in the light of the individual wind-wave concept. J. Oceanogr. Soc. Japan,40, 105–114.
Koga, M. and Y. Toba (1981): Droplet distribution and dispersion process on breaking wind waves. Tohoku Geophys. J. (Sci. Rep. Tohoku Univ. Ser. 5),28, 1–25.
Kunishi, H. (1963): An experimental study on the generation and growth of wind waves. Disaster Prevention Res. Inst., Kyoto Univ., Bull., No. 61, 41 pp.
Longuest-Higgins, M.S. (1989): Monopole emission of sound by asymmetric bubble oscillations. Part 1. Normal Modes. J. Fluid Mech.,201, 525–541.
Masuda, A., Kuo, Y.-Y. and H. Mitsuyasu (1979): On the dispersion relation of random gravity waves. Part 1. Theoretical framework. J. Fluid Mech.,92, 717–730.
Medrow, R. A. (1971): Floating Bubble Configurations. Phys. of Fluid,14, 459–465.
Mitsuyasu, H., Y.-Y. Kuo and A. Masuda (1979): On the dispersion relation of gandom gravity waves. Part 2. An experiment. J. Fluid Mech.,92, 731–749.
Mitsuyasu, H., R. Nakayama and T. Komori (1971): Observations of the wind and waves in Hakata Bay. Rep. Res. Inst. Appl. Mech., Kyushu Univ.,19, 37–74.
Monahan, E.C. and G. MacNiocaill, eds. (1986): Oceanic Whitecaps and Their Role in Air-Sea Exchange Processes. D. Reidel, 294 pp.
Okuda, K. (1982): Internal flow structure of short wind waves, I: On the internal vorticity structure. J. Oceanogr. Soc. Japan,38, 28–42.
Okuda, K., S. Kawai, M. Tokuda and Y. Toba (1976): Detailed observation of the wind-exerted surface flow by use of flow visualization methods. J. Oceanogr. Soc. Japan,32, 53–64.
Okuda, K., S. Kawai and Y. Toba (1977): Measurement of skin friction distribution along the surface of wind waves. J. Oceanogr. Soc. Japan,33, 190–198.
Phillips, O.M. (1958): The equilibrium range in the spectrum of wind-generated waves. J. Fluid Mech.,4, 426–434.
Phillips, O.M. (1985): Spectral and statistical properties of the equilibrium range in wind-generated gravity waves. J. Fluid Mech.,156, 505–531.
The SWAMP Group (1985): Ocean Wave Modeling. Plenum, 262 pp.
Toba, Y. (1959): Drop production by bursting of air bubbles on the sea surface (II). Theoretical study on the floating bubbles. J. Ocanogr. Soc. Japan,15, 121–130.
Toba, Y. (1961): Drop production by bursting of air bubbles on the sea surface (III). Study by use of a wind flume. Mem. Coll. Sci., Univ. of Kyoto, Series A,29, 313–344.
Toba, Y. (1965a): On the giant sea-salt particles in the atmosphere. I, General features of the distribution. Tellus,17, 131–145.
Toba, Y. (1965b): On the giant sea-salt particles in the atmosphere, II. Theory of the vertical distribution in the 10-m layer over the ocean. Tellus,17, 365–382.
Toba, Y. (1966): On the giant sea-salt particles in the atmosphere. III. An estimate of the production and distribution over the world ocean. Tellus18, 132–145.
Toba, Y. (1972): Local balance in the air-sea boundary processes.—I. On the growth process of wind waves. J. Oceanogr. Soc. Japan,28, 109–120.
Toba, Y. (1973): Local balance in the air-sea boundary processes III. On the spectrum of wind waves. J. Oceanogr. Soc. Japan,29, 209–220.
Toba, Y. (1974): Macroscopic principles on the growth of wind waves. Sci. Rep. Tohoku Univ. Ser. 5, Geophys.22, 61–73.
Toba, Y. (1978): Stochastic form of the growth of wind waves in a single-parameter representation with physical implicationas. J. Phys. Oceanogr.,8, 494–507.
Toba, Y. (1985): Wind waves and turbulence. p. 277–296.In: Recent Studies on Turbulent Phenomena, eds, by T. Tatsumi, H. Maruo and H. Takami. Assoc. for Sci. Doc. Inform., Tokyo
Toba, Y. (1988): Similarity laws of the wind wave and the coupling process of the air and water turbulent boundary layers. Fluid Dyn. Res.,2, 263–279.
Tboa, Y. and M. Chaen (1973): Quantitative expression of the breaking of wind waves on the sea surface. Rec. Oceanogr. Works in Japan,12, 1–11.
Toba, Y. and M. Koga (1986): A parameter describing overall conditions of wave breaking, white-capping, sea-spray production and wind stress. p. 37–47.In: Oceanic Whitecaps, eds. by E.C. Monahan and G. MacNiocaill, D. Reiedl.
Toba, Y. and M. Tanaka (1965): Dry fallout of sea-salt particles and its seasonal and diurnal variation. Special Contr, Geophys, Inst. Kyoto Univ.,5, 81–92.
Toba, Y. and M. Tanaka (1967): Simple technique for the the measurement of giant sea-salt particles by use of a hand-operated impactor and a chloride reagent film. Special Contr. Geophys. Inst. Kyoto Univ.,7, 111–118.
Toba, Y., M. Hatori, Y. Imai and M. Tokuda (1986): Experimental study of elementary processes in wind-waves using wind over regular waves. p. 117–127.In: Wave Dynamics and Radio Probing of the Ocean Surface, eds. by K. Hasselmann and O.M. Phillips, Plenum Press.
Toba, Y., S. Kawai and P.S. Joseph (1985a): The TOHOKU Wave Model. p. 201–210.In: Ocean Wave Modeling, by The SWAMP Group, Plenum.
Toba, Y., S. Kawai, K. Okada and N. Iida (1985b): The TOHOKU-II wave model. p. 227–232.In: The Ocean Surface, eds, Y. Toba and H. Mitsuyasu, D. Reidel.
Toba Y., K. Okada and I.S.F. Jones (1988): The response of wind-wave spectra to changing winds. Part I. Increasing winds. J. Phys. Oceanogr.,18, 1231–1240.
Toba, Y., M. Tokuda, K. Okuda and S. Kawai (1975): Forced convection accompanying wind waves J. Oceanogr. Soc. Japan,31, 192–198.
Tokuda, M. and Y. Toba (1981): Statistical characteristics of individual weves in laboratory wind waves I. Individual wave spectra and similarity structure. J. Oceanogr. Soc. Japan,37, 243–258.
Tokuda, M. and Y. Toba (1982): Statistical characteristics of individual waves in laboratory wind waves II. Self-consistent similarity regime. J. Oceanogr. Soc. Japan,38, 8–14.
Uji, T. (1984): A coupled discrete wave model MRI-II. J. Oceanogr. Soc. Japan,40, 303–313.
Wilson B. W. (1965): Numerical prediction of ocean wave in the North Atlantic for December 1959. Dt. Hydrogr. Z.,18, 114–130.
Wu, J. (1988): Variations of whitecap coverage with wind stress and water temperature. J. Phys. Oceanogr.,18, 1448–1453.
Yoshikawa I., H. Kawamura, K. Okuda and Y. Toba (1988): Turbulent structure in water under laboratory wind waves. J. Oceanogr. Soc. Japan,44, 143–156.
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Toba, Y. Studies on physical processes at the sea surface. Journal of the Oceanographical Society of Japan 45, 350–359 (1989). https://doi.org/10.1007/BF02123488
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DOI: https://doi.org/10.1007/BF02123488