Abstract
Observations of the wave elevation, pressure and three components of velocity have been made at different depths from a tower in the Adriatic Sea near Venice in a water depth of 16 m. The spectral analysis of the pressure measurements show significant differences from linear wave theory which depend on the wavelength and depth of the transducer. The velocity field was measured with two electromagnetic current meters in the same vertical line. The amplitudes of the vertical and horizontal velocities were about 10% less than expected on the basis of linear wave theory. The downward transport of horizontal momentum, estimated from the co-spectrum of the vertical and horizontal velocities, was found to be much greater than the total atmospheric stress. The large values of the momentum flux are associated with deviations in the phase of the horizontal velocity component with respect to the wave elevation from the value expected using linear wave theory.
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References
Bowden, K.F. and R.A. White, Measurements of the orbital velocities of sea waves and their use in determining the directional spectrum, Geophys. J. Roy. Astron. Soc., 12, 33, 1966.
Cartwright, D.E., Analysis and statistics. In “The Sea”, Volume 1, Interscience, 846 pp., 1962.
Cavaleri, L., Misure di onde con sensori di pressione. C.N.R. Tech. Report No. 79, 1973a.
Cavaleri, L., Ondametro a resistenza-critica, miglioramenti e precisione ottenibile. C.N.R. Tech. Report No. 78, 1973b.
Clayson, C.H. and N.D. Smith, Recent advances in wave buoy techniques at the National Institute of Oceanography. In Electronic & Radio Engineers, 1970.
Draper, L., Attenuation of sea waves with depth. La Houille Blanche, 6 1957.
Esteva, D. and D. Lee Harris, Comparison of pressure and wave gauge records. Proc. Twelfth Coastal Engineering Conference, 101, Washington, D.C., 1970.
Heathershaw, A.D., Measurements of turbulence in the Irish Sea benthic boundary layer. In “The Benthic Boundary Layer”, Plenum, 323 pp., 1976.
Homma, M., K. Horikawa and S. Komori, Response characteristics of underwater wave gauge. Proc. Tenth Coastal Engineering Conference, 99, Tokyo, 1966.
Jenkins, G.M. and D.G. Watts, Spectral analysis and its applications. Holden-Day, 525 pp., 1968.
Kitaigorodskii, S.A. and Y.Z. Miropolskii, The theory of turbulent exchange in the upper boundary layer of the ocean. Izv. Atmos. and Oceanic Phys. 3, 704, 1967.
Morison, J.R. and R.C. Crooke, The mechanics of deep water, shallow water, and breaking waves. Beach Erosion Board, Tech. Memo. No. 40, 1953.
Nagata, Y., The statistical properties of orbital wave motions and their applications for the measurement of directional spectra. J. Oceanogr. Soc. Japan, 19, 169, 1964.
Navrotskii, V.V., Waves and turbulence in the ocean surface layer. Oceanology, 755, 1967.
Shonting, D.H., A preliminary investigation of momentum flux in ocean waves. Pure and Appl. Geophys., 57, 149, 1964.
Simpson, J.H., Observations of the directional characteristics of sea waves. Geophys. J. Roy. Astron. Soc., 17, 93, 1969.
Soulsby, R.L., The effect of an axial component of current on the output of an e/m log. University of North Wales, Menai Bridge Science Laboratories Oceanography Report No. 70–1, 1970.
Taira, K., Wave particle velocities measured with a Doppler current meter. J. Oceanogr. Soc. Japan, 27, 218, 1971.
Thornton, E.B. and R.F. Krapohl, Water particle velocities measured under ocean waves. J. Geophys. Res., 79, 847, 1974.
Tsyplukhin, V.F., The results of instrumental study of wave attenuation within the deep sea (in Russian). Okeanologiya, 5, 833, 1963.
Tucker, M.J., N.D. Smith, F.E. Pierce and E.P. Collins, A two-component electromagnetic ship’s log. J. Inst. Navig., 23, 302, 1970.
Tucker, M.J., Electromagnetic current meters; an assessment of their problems and potentialities. Proc. Soc. Underwater Technology, 2, 53, 1972.
Yefimov, V.V. and G.A. Grishin, Dynamics of surface waves with allowance for the turbulent nature of the motion. Izv. Atmos. and Oceanic Phys., 8, 28, 1972.
Yefimov, V.V. and G.N. Khristoforov, Some features of the velocity field in the layer of wind-driven swell. Izv. Atmos. and Oceanic Phys., 5, 597, 1969.
Yefimov, V.V. and G.N. Khristoforov, Spectra and statistical relations between the velocity fluctuations in the upper layer of the sea and surface waves. Izv. Atmos. and Oceanic Phys., 7, 841, 1971.
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© 1978 Plenum Press, New York
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Cavaleri, L., Ewing, J.A., Smith, N.D. (1978). Measurement of the Pressure and Velocity Field Below Surface Waves. In: Favre, A., Hasselmann, K. (eds) Turbulent Fluxes Through the Sea Surface, Wave Dynamics, and Prediction. Springer, Boston, MA. https://doi.org/10.1007/978-1-4612-9806-9_17
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DOI: https://doi.org/10.1007/978-1-4612-9806-9_17
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