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Nonlinear dynamics of wind waves:multifractal phase/time effects
Nonlinear dynamics of wind waves multifractal phase time effects
2009/11/16
In addition to the bispectral coherence method, phase/time analysis of analytic signals is another promising avenue for the investigation of phase effects in wind waves. Frequency spectra of phase flu...
Asymmetry of wind waves studied in a laboratory tank
Asymmetry of wind waves laboratory tank
2009/11/16
Asymmetry of wind waves was studied in laboratory tank tinder varied wind and fetch conditions using both bispectral analysis of wave records and third-order statistics of the surface elevation. It is...
Wind-Generated Current and Phase Speed of Wind Waves
Wind-Generated Current Phase Speed Wind Waves
2009/4/3
Measurements of drift were made in a wind and wave facility at different elevations below the mean water level. The drift profiles were obtained for reference wind speeds, Ur=3.1, 5.7 and 9.6 m sec...
Normalized and Equilibrium Spectra of Wind Waves in Lake Michigan
Equilibrium Spectra Wind Waves Lake Michigan
2009/3/9
An empirical spectral equation for fetch-limited deep-water wind waves was derived by applying similarity analysis to wind and wave data recorded at the Lake Michigan Research Tower near Muskegon, Mic...
A New Method for Measuring the Directional Wave Spectrum. Part II. Measurement of the Directional Spectrum and Phase Velocity of Laboratory Wind Waves
Directional Wave Spectrum Phase Velocity Directional Spectrum Laboratory Wind Waves
2009/2/23
A new method for measuring the directional spectrum, introduced in the preceding paper (Rikiishi, 1978), has been applied to actual wind waves in a large experimental tank 70 m × 8 m with the water 3 ...
Stochastic Form of the Growth of Wind Waves in a Single-Parameter Representation with Physical Implications
Wind Waves Single-Parameter Representation Physical Implications
2009/2/23
It is shown that a simple relation, E* = 5.1 × 10−2 σm*−3 for describing the conditions of growing wind waves, is supported by various available data, where E* = g2E/u*4 is dimensionless e...
A computational scheme for calculating transfer functions is prepared, which gives much improved numerical stability and smoothness compared with previous studies. Besides, a detailed analysis is made...
Wave-Turbulence interactions in the Upper Ocean. Part I：The Energy Balance of the Interacting Fields of Surface Wind Waves and Wind-Induced Three-Dimensional Turbulence
Wave-Turbulence interactions Upper Ocean Surface Wind Waves
2009/2/6
We analyze in detail the budget of total and fluctuating energy in the surface layer of the ocean. We suggest a rational scheme for separating the budget of turbulence from that of random wind-generat...
On the Fluid Dynamical Theory of Turbulent Gas Transfer Across an Air-Sea Interface in the Presence of Breaking Wind-Waves
Fluid Dynamical Theory Turbulent Gas Transfer Air-Sea Interface Breaking Wind-Waves
2009/1/20
It is shown that in order to describe the transfer of gases in the liquid near the air-sea interface, the vertical structure of three-dimensional small-scale turbulence in turbulent patches generated ...
Recent theoretical studies of the accelerations in regular gravity waves of finite steepness have shown striking differences between the Eulerian and the Lagrangian accelerations (those measured by fi...
Equilibrium spectral behavior for ocean gravity wind waves has been investigated actively over the past three decades, yet fundamental problems remain in reconciling theory with observations. Predicte...
Air Bubbles Produced by Breaking Wind Waves：A Laboratory Study
Air Bubbles bubble clouds Wind Waves
2008/12/27
Air bubbles produced by breaking wind waves are measured in a laboratory tank to study bubble clouds produced in freshwater under various wind and wave conditions. Vertical entrainment of bubbles and ...
A Third-Generation Model for Wind Waves on Slowly Varying, Unsteady, and Inhomogeneous Depths and Currents
wind waves arbitrary depth Third-Generation Model
2008/12/23
A full discrete spectral model for propagation generation and dissipation of wind waves for arbitrary depth, current and wind fields is presented (WAVEWATCH). This model incorporates all relevant wave...
Effects of Tides and Storm Surges on North Sea Wind Waves
Storm Surges Tides North Sea Wind Waves
2008/12/23
Effects of tides and storm surges on wind waves in shelf seas are assessed by hindcasting three North Sea storm cases. It is shown that tides and storm surges in shelf seas should be considered as an ...
Effects of rain on surface waves have been investigated in a circulating wind-wave tank. Surface displacement and slope spectra under different wind velocities were measured near the upwind and downwi...