On the possibility of reconstruction of wind-wave spectra from reverberation signals in two-position acoustic sounding of the ocean

1993 ◽  
Vol 36 (8) ◽  
pp. 591-595
Author(s):  
L. S. Dolin ◽  
M. I. Kondrat'eva
Keyword(s):  
Wind Wave ◽  
Wave Spectra ◽  
Acoustic Sounding

Breaking waves and the equilibrium range of wind-wave spectra

1997 ◽  
Vol 342 ◽  
pp. 377-401 ◽  
Author(s):  
S. E. BELCHER ◽  
J. C. VASSILICOS
Keyword(s):  
High Frequency ◽  
Wind Wave ◽  
Breaking Waves ◽  
Breaking Wave ◽  
Wave Spectra ◽  
Scale Invariant ◽  
Self Similar ◽  
Dynamical Properties ◽  
Dynamical Balance ◽  
Equilibrium Range

When scaled properly, the high-wavenumber and high-frequency parts of wind-wave spectra collapse onto universal curves. This collapse has been attributed to a dynamical balance and so these parts of the spectra have been called the equilibrium range. We develop a model for this equilibrium range based on kinematical and dynamical properties of breaking waves. Data suggest that breaking waves have high curvature at their crests, and they are modelled here as waves with discontinuous slope at their crests. Spectra are then dominated by these singularities in slope. The equilibrium range is assumed to be scale invariant, meaning that there is no privileged lengthscale. This assumption implies that: (i) the sharp-crested breaking waves have self-similar shapes, so that large breaking waves are magnified copies of the smaller breaking waves; and (ii) statistical properties of breaking waves, such as the average total length of breaking-wave fronts of a given scale, vary with the scale of the breaking waves as a power law, parameterized here with exponent D.

scholarly journals A THEORY ON THE FETCH GRAPH, THE ROUGHNESS OF THE SEA AND THE ENERGY TRANSFER BETWEEN WIND AND WAVE

1966 ◽  
Vol 1 (10) ◽  
pp. 2
Author(s):  
Mikio Hino
Keyword(s):  
Experimental Data ◽  
Energy Transfer ◽  
Energy Dissipation ◽  
Basic Principle ◽  
Wind Wave ◽  
Peak Frequency ◽  
Wave Spectra ◽  
Total Drag ◽  
Wave Characteristics ◽  
Fundamental Mechanism

It is the aim of this paper to give theoretical derivations of the windwave characteristics from a viewpoint of fundamental mechanism of wind-wave generation. A hypothesis is proposed as a basic principle of the air-sea interaction, which asserts the maximum ratio of the energy transfer from wind to wave to the energy dissipation within wind. As the theoretical consequences of the hypothesis combined with the recent theories on wind-wave spectra by Miles and Phillips, wind-wave characteristics such as the fetch graph, the roughness of the sea, the spectral peak frequency, the ratio of pressure contribution to total drag and the energy transfer from wind to wave are derived with remarkable agreements with experimental data.

scholarly journals Directional short wind wave spectra derived from the sea surface photography

2013 ◽  
Vol 118 (9) ◽  
pp. 4380-4394 ◽  
Author(s):  
M. V. Yurovskaya ◽  
V. A. Dulov ◽  
B. Chapron ◽  
V. N. Kudryavtsev
Keyword(s):  
Wind Wave ◽  
Sea Surface ◽  
Wave Spectra
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