Using new large-scale wave-flume experiments we examine the cross-section and planform geometry of wave-formed ripples in coarse sand (median grain sizeD50 = 430 μm) under high-energy shoaling and plunging random waves. We find that the ripples remain orbital for the full range of encountered conditions, even for wave forcing when in finer sand the ripple length λr is known to become independen...

The nonlinear Schrödinger (NLS) equation describing the propagation of weakly rotational wave packets in an infinitely deep fluid in Lagrangian coordinates has been derived. The vorticity is assumed to be an arbitrary function of Lagrangian coordinates and quadratic in the small parameter proportional to the wave steepness. The vorticity effects manifest themselves in a shift of the wave number...

Waves and currents interact, with the resulting combination largely determining loading on offshore structures devices. Despite this, are often ignored wave buoy data is processed without consideration of current or wave-current interaction. This subsequently used in design, yet sea state power, steepness, directionality may have significant errors. Here we present a novel framework for process...

This combined numerical/laboratory study investigates the effect of stratification form on shoaling characteristics internal solitary waves propagating over a smooth, linear topographic slope. Three types are investigated, namely (i) thin tanh (homogeneous upper and lower layers separated by pycnocline), (ii) surface (linearly stratified layer overlaying homogeneous layer) (iii) broad (continuo...

In this paper existing guidelines to predict wave overtopping on rubble mound breakwaters and coastal structures are modified improved with respect the influence of roughness crest width. Data from recently made model tests data combined demonstrate need for modifying these formulations in EurOtop. A new reduction factor γcw width is established an improvement method by Besley. The slope normal...

Film bulk acoustic wave resonators (FBARs) are of great interest for wireless applications due to its inherent advantages at microwave frequencies. However, the presence of spurious modes near the main resonance degrades the performance of resonators and requires development of new methods to suppress such unwanted modes. Different techniques are used to suppress these spurious modes. In this p...

Global observations of ocean swell propagation is presented and analyzed, using on four years of satellite Synthetic Aperture Radar data. Tracking swells along their propagation paths yields an estimation of the dissipation of their energy. Swells can be very persistent with energy e-folding scales exceeding 30,000 km. For increasing swell steepness, this scale shrinks down to 2700 km, revealin...

We present a new hybrid asymptotic-numerical method to study nonlinear wave-body interaction in threedimensional water of arbitrary depth. After solving a simplified body problem numerically using a distribution of singularities along the body surface, we reduce the nonlinear free surface problem to a closed system of two nonlinear evolution equations, using a systematic asymptotic expansion, f...

The Beverton–Holt and Ricker stock-recruit functions were derived in terms of two pre-recruit mortality parameters. Mace, & Doonan, (1988, A generalized bioeconomic simulation model for fish population dynamics) reparameterized the function steepness, which combines with post-recruit biological parameters defining unfished spawning biomass per recruit. Their parameterization explicitly assumes ...