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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...
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...
A Statistical Method for Analyzing Wave Shapes And Phase Relationships of Fluctuating Geophysical Variables
Wave Shapes Fluctuating Geophysical Variables Phase Relationships
2009/4/2
A system of computational techniques was developed to detect a variety of structural features in geophysical time series containing turbulent or wave-like fluctuations. Individual probability density ...
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 ...
Observed Oceanic Variability at and near the Air-Sea Interface during Phase III of Project BOMEX
Oceanic Variability Project BOMEX Air-Sea Interface
2009/2/23
The natural variability observed at and near the air-sea interface during Period III of Project BOMEX is examined. The time and space variability in the observed oceanic parameters is large by classic...
The Surface Wave Environment In the GATE B/C Scale—Phase III
Surface Wave Environment GATE B/C Scale—Phase III
2009/2/10
The surface wave environment in the GATE B/C scale is described from wave measurements made from buoys and aircraft during Phase III (September 1974). Particular emphasis is given to the wave measurem...
Statistics of Mixing Parameters in the Upper Ocean During JASIN Phase 2
Mixing Parameters Upper Ocean JASIN Phase
2009/1/16
Turbulence levels obtained during the 1978 Joint Air-Sea Interaction experiment (JASIN) have been examined from measurements of both temperature gradient and velocity shear. These measurements, obtain...
A Heton Model of the Spreading Phase of Open-Ocean Deep Convection
Heton Model Open-Ocean Deep Convection cold water
2008/12/18
A point-vortex heton model of the lateral dispersion of cold water formed in open-ocean deep convection is developed and studied as an idealized representation of the sinking and spreading phase of op...
Reducing Phase and Amplitude Errors in Restoring Boundary Conditions
Amplitude Errors Restoring Boundary Conditions Reducing Phase
2008/12/10
Restoring boundary conditions are often used to drive ocean general circulation models. As typically such conditions impose time lags and amplitude errors in the seasonal cycle of the model surface tr...
The phase of the M2 surface elevation tide changes by 100° along a 40-km length of Cook Strait, New Zealand. Acoustic Doppler Current Profiler measurements are presented that show a change of only 12°...
An Improved Bound for the Complex Phase Speed of Baroclinic Instability
Complex Phase Speed Baroclinic Instability
2008/7/4
An improved bound is obtained for the radius of the semicircle in the complex plane containing the complex phase speed of baroclinically unstable plane wave disturbances. In the limit of long waves, t...
Phase Distribution of Small-Scale Ocean Surface Roughness
Phase Distribution Small-Scale Ocean Surface
2008/6/20
Remote sensing is becoming an important tool for oceanographic research. As the resolution of remote sensors is becoming comparable to the wavelength of dominant ocean surface waves, the usual assumpt...
Energy Levels, Phase, and Amplitude Modulation of the Baroclinic Tide off Hawaii
Energy Levels Phase Amplitude Modulation Baroclinic Tide Hawaii
2008/6/13
Inverted echo sounder data from Station Aloha north of Oahu, Hawaii, are used to determine the absolute energy levels and time-varying nature of the first-mode baroclinic tide north of Hawaii. The sem...
Experimental Investigation of Wave Breaking Criteria Based on Wave Phase Speeds
Experimental Investigation Wave Breaking Criteria Wave Phase Speeds
2008/6/6
Experiments were performed that test the kinematic breaking criterion, which states that the horizontal fluid particle velocity at the surface of a crest exceeds the local phase speed of the crest pri...