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waves and the currents

Trapping and instability of directional gravity waves in localized water currents

Trapping and instability of directional gravity waves in localized water currents

... water currents on the nonlinear dynamics and stability of large amplitude, statistically distributed gravity waves is investigated theoretically and numerically by means of an evolution equation for a ...

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SCOUR AROUND SINGLE PILE AND PILE GROUPS SUBJECTED TO WAVES AND CURRENTS

SCOUR AROUND SINGLE PILE AND PILE GROUPS SUBJECTED TO WAVES AND CURRENTS

... This paper presents the results of an experimental study of scour around single pile and different configurations of pile groups exposed to waves and currents. Four different sets of experiments were used ...

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Trapping and instability of directional gravity waves in localized water currents

Trapping and instability of directional gravity waves in localized water currents

... Water currents are often associated with the occurrence of rogue waves on the ...rogue waves have been made off the coasts South Africa, Japan, and other places associated with strong water ...

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Modelling of sediment transport and morphological evolution under the combined action of waves and currents

Modelling of sediment transport and morphological evolution under the combined action of waves and currents

... undertow currents are neglected in coastal area models (2DH), which is a limitation for simulat- ing the evolution of beach profiles for long ...of waves and ...

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The evolution of mode-2 internal solitary waves modulated by background shear currents

The evolution of mode-2 internal solitary waves modulated by background shear currents

... shear currents were ne- ...mode-2 waves quickly deformed and developed a tail of short, small-amplitude mode-1 waves in the presence of a background shear ...shear currents could produce ...

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The effects of oblique waves and currents on the loadings and performance of tidal turbines

The effects of oblique waves and currents on the loadings and performance of tidal turbines

... oblique waves and currents on the root bending moment of the blades, on the rotor thrust and torque loadings and on the performance of a tidal ...of waves and currents at any desired ...

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Measuring currents, ice drift, and waves from space: the Sea surface KInematics Multiscale monitoring (SKIM) concept

Measuring currents, ice drift, and waves from space: the Sea surface KInematics Multiscale monitoring (SKIM) concept

... among Earth system components. The ocean surface veloc- ity combines surface currents (mainly driven by winds, den- sity gradients, and tides), with a wave-induced drift, known as Stokes drift. This total mass ...

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Observations of the effect of emergent vegetation on sediment resuspension under unidirectional currents and waves

Observations of the effect of emergent vegetation on sediment resuspension under unidirectional currents and waves

... There are many studies on critical stresses and velocities for sediment motion and resuspension on a flat, sandy bed un- der currents and waves (e.g. van Rijn, 2007 and references therein). However, ...

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Nearshore mixing due to the effects of waves and currents

Nearshore mixing due to the effects of waves and currents

... any waves, the longitudinal shear dispersion and the turbulent diffusion coefficients have been studied by Elder (1959), Holly et ...the waves and wave breaking will increase, which in turn affects the ...

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Drag and inertia coefficients for horizontally submerged rectangular cylinders in waves and currents

Drag and inertia coefficients for horizontally submerged rectangular cylinders in waves and currents

... wave flume or basin, the flow is two-dimensional such that the free stream velocity field varies in both horizontal and vertical directions, and the generated waves are not necessarily sinusoidal. Furthermore, the ...

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Deep currents in the Gulf of Guinea: along slope propagation of intraseasonal waves

Deep currents in the Gulf of Guinea: along slope propagation of intraseasonal waves

... intraseasonal waves in the Gulf of Guinea appear mainly linear, but despite this fact the intermittency of the 14-day signal observed at the Biozaire site is not a linear response to wind ...of currents ...

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The effect of bathymetry interaction with waves and sea currents on the loading and thrust of a tidal turbine

The effect of bathymetry interaction with waves and sea currents on the loading and thrust of a tidal turbine

... Regarding these differences, waves are one of the main sources of high variable loads experienced on tidal turbines. The orbital motion of the water particles as they pass creates a changing circular or ...

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Incidence and reflection of internal waves and wave-induced currents at a jump in buoyancy frequency

Incidence and reflection of internal waves and wave-induced currents at a jump in buoyancy frequency

... internal waves by a sloping bottom has been treated by several authors; for example Thorpe (1987) treats uniform wave trains and Tabaei et ...to waves reflecting from the interface treated in McHugh ...

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TOPOGRAPHIC WAVES AND THE EVOLUTION OF COASTAL CURRENTS

TOPOGRAPHIC WAVES AND THE EVOLUTION OF COASTAL CURRENTS

... Depending on the direction of propagation of the front, the flux forced by the source-sink pair crosses the step in an unsteady region a t infinity or in an increasingly narrow, [r] ...

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Dynamic Response of Coupled Mooring Lines and Floating Wave Energy Devices in Waves / Currents

Dynamic Response of Coupled Mooring Lines and Floating Wave Energy Devices in Waves / Currents

... gas. Waves require some type of energy disturbance in order to be formed such as wind, displacement (earthquake, landslide), changes in atmospheric pressure and gravitational ...creates waves when it blows ...

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Estimation of Hydrodynamic Force on Rough Circular Cylinders in Random Waves and Currents (RESEARCH NOTE)

Estimation of Hydrodynamic Force on Rough Circular Cylinders in Random Waves and Currents (RESEARCH NOTE)

... random waves are applied to vertical rough cylinders is accomplished with error of about 24% of which most contribution is related to the prediction of particle kinematics and less from estimation of Cd and Cm ...

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VISIR-1.b: ocean surface gravity waves and currents for energy-efficient navigation

VISIR-1.b: ocean surface gravity waves and currents for energy-efficient navigation

... VISIR optimisation corresponds to the top layer in a hierar- chical ship motion control system. It determines long-term routing policies that affect the motion of the vessel, viewed as a particle. The related kinematics ...

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Vertical sidewall boundary layers in combined waves and currents

Vertical sidewall boundary layers in combined waves and currents

... at University College London. The programme's main area o f interest has been the study o f wave and current interactions, with authors such as Kemp, Grass, Simons and Kyriacou accomplishing significant work in the last ...

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FREE-SURFACE ADJUSTMENT AND TOPOGRAPHIC WAVES IN COASTAL CURRENTS

FREE-SURFACE ADJUSTMENT AND TOPOGRAPHIC WAVES IN COASTAL CURRENTS

... The problem is simplified by considering an escarpment of small fractional depth, so that on the slow topographic timescale the initial, fast Poincare' and Kelvin wave adjustment of [r] ...

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Internal lee waves and baroclinic bores over a tropical seamount shark ‘hot spot’

Internal lee waves and baroclinic bores over a tropical seamount shark ‘hot spot’

... The waves of tidal origin are accompanied by short period ( ∼ 5 min) internal waves with amplitudes O(10 m) and frequencies close to the local buoyancy frequency, N, within the thermocline which is the ...

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