Oceanic surface gravity waves have a mean Lagrangian motion, the Stokes drift. The dynamics of winddriven, basin-scale oceanic currents in the presence of Stokes drift are modified by the addition of so-called vortex forces and wave-induced material advection, as well by wave-averaged effects in the surface boundary conditions for the dynamic pressure, sea level, and vertical velocity. Some the...

Two recent algorithms for estimating zero-upcross wave periods from altimeter data are investigated using data from a buoy in the North East Pacific with a relatively high occurence of swell. Both algorithms performed well in wind seas, with low wave age, but only one – developed using a neural network – was satisfactory when the wave age was high.

The interaction of wind and water wave groups is investigated theoretically and numerically. A steep wave train is generated by means of dispersive focusing, using both the linear theory and fully nonlinear equations. The linear theory is based on the Schrödinger equation while the nonlinear approach is developed numerically within the framework of the potential theory. The interaction between ...

Recently, coastal disaste have occurred by typhoons passing through bays, such as Typhoon Jebi in 2018 and Hagibis 2019 (Mori et al.(2019), Shimozono al.(2020)). The current wave model cannot simultaneously account for the development of wind waves due to strong winds deformation topography. This study aims develop a phase-resolving that considers shallow water under conditions. A term local is...

[1] Longitudinal dependences of stratospheric gravity wave (GW) fluctuations and lower ionospheric irregularities (sporadic E) at midlatitudes are studied by means of radio occultation data of the Global Positioning System/Meteorology Experiment (GPS/MET) satellite mission. The zonal average of temperature variance of GW fluctuations with vertical scales less than 7 km at northern midlatitudes ...

In this paper the dissipation of ion cyclotron resonant waves in the extended solar corona is Alfve n examined in detail. For the Ðrst time, the wave damping arising from more than 2000 low-abundance ion species is taken into account. Useful approximations for the computation of coronal ionization equilibria for elements heavier than nickel are presented. Also, the Sobolev approximation from t...

A model of surface waves generated on deep water by strong winds is proposed. A two-layer approximation is adopted, in which a shallow turbulent layer overlies the lower, infinitely deep layer. The dynamics of the upper layer, which is directly exposed to the wind, are nonlinear and coupled to the linear dynamics in the deep fluid. The authors demonstrate that in such a system there exist stead...

There is a huge energy demand from offshore renewable resources. To maximize the use of various sources, combined floating system consisting different types devices an ideal option to reduce levelized cost (LCOE) by sharing infrastructure platform and enhancing power production capacity. This study proposed concept systems combing heave-type wave converter (WEC) with semisubmersible wind turbin...

The normalized radar backscatter (σ) in scatterometer measurements over water is theorized to go to zero below a threshold wind speed due to insufficient friction between the wind and water to create capillary waves from which the radar signal scatters. Evidence of the threshold wind speed and a hysteresis effect have been observed in airship and wave tank data. The threshold wind speed is addi...

Identification of representative regimes of wave height and direction under different wind conditions is complicated by issues that relate to the specification of the joint distribution of variables that are defined on linear and circular supports and the occurrence of missing values. We take a latent-class approach and jointly model wave and wind data by a finite mixture of conditionally indep...