ocean surface: a new characterization of short-crested Stokes waves interacting with a mean ow By T. J. Bridges1, F. Dias2 and D. Menasce2 1Department of Mathematics and Statistics, University of Surrey, Guildford, Surrey GU2 5XH, UK 2 Institut Non-Lin eaire de Nice, Universit e de Nice-Sophia Antipolis 1361 route des Lucioles, 06560 Valbonne, France Abstract The formation of multi-periodic pat...

Capillary gravity waves excited by an obstacle are investigated by numerical simulations. Under the resonant condition for which large-amplitude solitary waves are generated, solutions of the Euler equations show that the capillary effects induce the generation of short waves both upstream of the solitary waves and downstream of the obstacle. Overall characteristics of these waves agree with th...

Numerical simulations of nonrotating flow with uniform basic wind and stability past long three-dimensional (3D) ridges are compared to the corresponding two-dimensional (2D) limit to reveal the importance of 3D effects. For mountain heights smaller than the threshold for breaking waves, the low-level flow over the interior of the ridge is well described by 2D theory when the horizontal aspect ...

[1] Argo float data (subsurface tracks and temperature profiles collected from March 2004 through May 2005) are used to detect signatures of long Rossby waves in the velocity of the currents at 1000-m depth and temperature, between the ocean surface and 950 m, in the zonal band of 4 N–24 N in the tropical North Atlantic. Different types of long Rossby waves (with the characteristic scales betwe...

This paper presents a method derived from Whitham’s variational formulation of the problem interfacial capillary–gravity short-crested waves. It is developed for resolution waves generated by obliquely reflecting vertical wall. In essence, not changed, but computations are performed and arranged to produce that has been applied number cases demonstrating effectiveness flexibility approach. The ...

We present the first results on the analysis of the structures observed in the jet of the quasar 0836+710. We obtain the ridge lines of the jet at different epochs and several frequencies. We interpret the oscillatory structures obtained as waves that can be attached to the growth of instabilities. We explain how to derive information on the nature and origin of these structures by fitting toge...

Sound propagation in the atmospheric boundary layer can be strongly affected by vertical gradients in the wind speed and air temperature, and by atmospheric turbulence. In addition, undulating terrain will either partly shield or focus sound waves, highly impacting sound exposure levels. These aspects become especially important in case of wind turbines present on a ridge, such placement often ...