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Internal waves --- Power spectra

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Internal waves. --- Ocean waves --- Mathematical models.

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Internal waves --- Gravity waves --- Fluid dynamics

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Internal wave dynamics in lakes (and oceans) is an important physical component of geophysical fluid mechanics of ‘quiescent’ water bodies of the Globe. The formation of internal waves requires seasonal stratification of the water bodies and generation by (primarily) wind forces. Because they propagate in basins of variable depth, a generated wave field often experiences transformation from large basin-wide scales to smaller scales. As long as this fission is hydrodynamically stable, nothing dramatic will happen. However, if vertical density gradients and shearing of the horizontal currents in the metalimnion combine to a Richardson number sufficiently small (< ¼), the light epilimnion water mixes with the water of the hypolimnion, giving rise to vertical diffusion of substances into lower depths. This meromixis is chiefly responsible for the ventilation of the deeper waters and the homogenization of the water through the lake depth. These processes are mainly formed as a result of the physical conditions, but they play biologically an important role in the trophicational state of the lake.

Internal waves. --- Lakes. --- Internal waves --- Lakes --- Geography --- Physics --- Earth & Environmental Sciences --- Physical Sciences & Mathematics --- Physical Geography --- Cosmic Physics --- Marine Science --- Lochs --- Boundary waves (Oceanography) --- Waves, Internal --- Earth sciences. --- Geophysics. --- Mathematical physics. --- Mechanics. --- Marine sciences. --- Freshwater. --- Earth Sciences. --- Geophysics/Geodesy. --- Marine & Freshwater Sciences. --- Mathematical Physics. --- Bodies of water --- Ocean waves --- Physical geography. --- Marine Sciences. --- Classical Mechanics. --- Classical mechanics --- Newtonian mechanics --- Dynamics --- Quantum theory --- Ocean sciences --- Aquatic sciences --- Physical mathematics --- Fresh waters --- Freshwater --- Freshwaters --- Inland water --- Inland waters --- Water --- Geological physics --- Terrestrial physics --- Earth sciences --- Mathematics

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Oceanic internal waves (IWs) at frequencies from local inertial (e.g., near-inertial internal waves) to buoyancy frequencies (nonlinear internal waves or internal solitary waves), sometimes including diurnal and semidiurnal tidal frequencies, play an important role in redistributing heat, momentum, materials, and energy via turbulent mixing. IWs are found ubiquitously in many seas, including East Asian marginal seas (Indonesian Seas, South China Sea, East China Sea, Yellow Sea, and East Sea or Japan Sea), significantly affecting underwater acoustics, coastal and offshore engineering, submarine navigation, biological productivity, and the local and global climate. Despite decades of study on the IWs in some regions, our understanding of the IWs in the East Asian marginal seas is still in a primitive state and the mechanisms underlying every stage (generation, propagation, evolution, and dissipation) of IWs are not always clear. This Special Issue includes papers related to all fields of both low- and high-frequency IW studies in the specified region, including remote sensing, in situ observations, theories, and numerical models.

near-inertial waves --- typhoon Megi --- South China Sea --- hybrid coordinate ocean model reanalysis results --- Luzon Strait --- baroclinic tides --- stratification variability --- MITgcm --- nonlinear internal wave --- propagating speed --- propagating direction --- underway observation --- moored observation --- East China Sea --- internal solitary wave --- shipboard observation --- extreme current velocity --- wave breaking --- trapped core --- near-inertial internal waves --- nonseasonal variability --- mesoscale flow field --- relative vorticity --- Okubo-Weiss parameter --- subsurface mooring --- southwestern East Sea --- Japan Sea --- internal waves --- Hainan Island --- KRI nanggala-402 submarine wreck --- Lombok Strait --- Bali Sea --- internal solitary waves --- remote sensing images --- underwater noise --- flow noise --- vortex-induced vibration --- the South China Sea --- n/a