Outputs (28)

Extreme dynamics of wave groups on jet currents (2023)
Journal Article

Rogue waves are known to be much more common on jet currents. A possible explanation was put forward in Shrira and Slunyaev [“Nonlinear dynamics of trapped waves on jet currents and rogue waves,” Phys. Rev. E 89, 041002(R) (2014)] for the waves trapp... Read More about Extreme dynamics of wave groups on jet currents.

A novel (2+1)-dimensional nonlinear evolution equation for weakly stratified free-surface boundary layers (2023)
Journal Article

To get an insight into the dynamics of the oceanic surface boundary layer we develop an asymptotic model of the nonlinear dynamics of linearly decaying three-dimensional long-wave perturbations in weakly stratified boundary-layer flows. Although in n... Read More about A novel (2+1)-dimensional nonlinear evolution equation for weakly stratified free-surface boundary layers.

Effects of finite non-Gaussianity on evolution of a random wind wave field. (2022)
Journal Article

We examine the long-term evolution of a random wind wave field generated by constant forcing, by comparing numerical simulations of the kinetic equation and direct numerical simulations (DNS) of the dynamical equations. While the integral characteris... Read More about Effects of finite non-Gaussianity on evolution of a random wind wave field..

Can edge waves be generated by wind? (2022)
Journal Article

Edge waves, the infragravity waves trapped by near-shore topography, are important in morphodynamics and flooding on mildly sloping beaches. Edge waves are usually generated by swell via triad interactions. Here, we examine the possibility that edge... Read More about Can edge waves be generated by wind?.

On the physical mechanism of front-back asymmetry of non-breaking gravity-capillary waves (2021)
Journal Article

In nature, the wind waves of the gravity–capillary range are noticeably skewed forward. The salient feature of such waves is a characteristic pattern of capillary ripples on their crests. The train of these ‘parasitic capillaries’ is not symmetric wi... Read More about On the physical mechanism of front-back asymmetry of non-breaking gravity-capillary waves.

What do we need to Probe Upper Ocean Stratification Remotely? (2020)
Journal Article

We consider whether it is possible in principle to retrieve the key parameters of the mixed layer in the upper ocean (its thickness, bulk eddy viscosity and the pycnocline stratification below) using a theoretical model, which assumes the surface vel... Read More about What do we need to Probe Upper Ocean Stratification Remotely?.

Boundary layer collapses described by the two-dimensional intermediate long-wave equation (2020)
Journal Article

We study the nonlinear dynamics of localized perturbations of a confined generic boundary-layer shear flow in the framework of the essentially two-dimensional generalization of the intermediate long-wave (2d-ILW) equation. The 2d-ILW equation was ori... Read More about Boundary layer collapses described by the two-dimensional intermediate long-wave equation.

Upper-ocean Ekman current dynamics: a new perspective (2020)
Journal Article

The work examines upper-ocean response to time-varying winds within the Ekman paradigm. Here, in contrast to the earlier works we assume the eddy viscosity to be both time and depth dependent. For self-similar depth and time dependence of eddy viscos... Read More about Upper-ocean Ekman current dynamics: a new perspective.

IDENTIFICATION OF EDDY VISCOSITY IN THE UNSTEADY MARINE EKMAN LAYER FLOW (2019)
Presentation / Conference

Coupling of acoustic and intrinsic modes in 1-D combustor models (2019)
Journal Article

The work is concerned with the theoretical examination of a new type of thermo-acoustic instability in combustors not reported in the literature. The instability results from linear coupling between the conventional acoustic mode and the recently dis... Read More about Coupling of acoustic and intrinsic modes in 1-D combustor models.

Spectral evolution of weakly nonlinear random waves: kinetic description versus direct numerical simulations (2018)
Journal Article

Kinetic equations are widely used in many branches of science to describe the evolution of random wave spectra. To examine the validity of these equations, we study numerically the long-term evolution of water wave spectra without wind input using th... Read More about Spectral evolution of weakly nonlinear random waves: kinetic description versus direct numerical simulations.

Intrinsic flame instabilities in combustors: Analytic description of a 1-D resonator model (2017)
Journal Article

The study is concerned with theoretical examination of thermo-acoustic instabilities in combustors and focuses on recently discovered ‘flame intrinsic modes’. These modes differ qualitatively from the acoustic modes in a combustor. Although these fla... Read More about Intrinsic flame instabilities in combustors: Analytic description of a 1-D resonator model.

Explicit wave action conservation for water waves on vertically sheared flows (2017)
Journal Article

This paper addresses a major shortcoming of the current generation of wave models, namely their inability to describe wave propagation upon ambient currents with vertical shear. The wave action conservation equation (WAE) for linear waves propagating... Read More about Explicit wave action conservation for water waves on vertically sheared flows.

ANALYSIS OF FLAME-INTRINSIC INSTABILITY IN A RESONATOR (2016)
Conference Proceeding

Modelling Transient Sea States with the Generalised Kinetic Equation (2016)
Book Chapter

Observations of meteotsunami on the Louisiana shelf: a lone soliton with a soliton pack (2016)
Journal Article

The paper reports unique high-resolution observations of meteotsunami by a large array of oceanographic instruments deployed on the Atchafalaya Shelf (Louisiana, USA) in 2008 with the primary aim to study wave dissipation in muddy environments. The m... Read More about Observations of meteotsunami on the Louisiana shelf: a lone soliton with a soliton pack.

On the Nature of Near-Inertial Oscillations in the Uppermost Part of the Ocean and a Possible Route toward HF Radar Probing of Stratification (2015)
Journal Article

Beyond the KdV: Post-explosion development (2015)
Journal Article

OSL Dating and GPR Mapping of Palaeotsunami Inundation: A 4000-Year History of Indian Ocean Tsunamis as recorded in Sri Lanka (2015)
Journal Article

Modelling the Impact of Squall on Wind Waves with the Generalized Kinetic Equation (2015)
Journal Article

Evaluation of Skewness and Kurtosis of Wind Waves Parameterized by JONSWAP Spectra (2014)
Journal Article

Nonlinear dynamics of trapped waves on jet currents and rogue waves (2014)
Journal Article

Trapped waves on jet currents: asymptotic modal approach (2013)
Journal Article

On the highest non-breaking wave in a group: fully nonlinear water wave breathers versus weakly nonlinear theory (2013)
Journal Article

Near-inertial waves and deep ocean mixing (2013)
Journal Article

Large-time evolution of statistical moments of wind–wave fields (2013)
Journal Article

Towards a New Picture of Wave Turbulence (2013)
Book Chapter

The existing wave turbulence paradigm assumes, in particular, a proximity to stationarity and spatial homogeneity of the wave field under consideration, which is often violated in nature. In this review, we outline a new theoretical approach free fro... Read More about Towards a New Picture of Wave Turbulence.

Advances in Wave Turbulence (Ed. V. Shrira) (2011)
Book