63 relations: Acoustic wave, Altitude, Altostratus undulatus cloud, American Geophysical Union, Amplitude, Ansatz, Arithmetic mean, Atmosphere, Atmosphere of Earth, Buoyancy, Capillary wave, Conservative vector field, Curvature, Dispersion (water waves), Dynamics (mechanics), Earth science, Fetch (geography), Fluid, Fluid dynamics, Force, Free surface, Gravity, Green's law, Group velocity, Horizontal convective rolls, Hydrostatic equilibrium, Infragravity wave, Interface (matter), Internal wave, Lee wave, List of things named after Leonhard Euler, Lunitidal interval, Mechanical equilibrium, Mesosphere, Momentum, Morning Glory cloud, Mountain, National Oceanic and Atmospheric Administration, Nonlinear system, Ocean, Orr–Sommerfeld equation, Partial derivative, Phase velocity, Quasi-biennial oscillation, Rayleigh's equation (fluid dynamics), Rayleigh–Taylor instability, Resonance, Rogue wave, Stratosphere, Stream function, ..., Stress (mechanics), Surface tension, Surface wave, Tide, Troposphere, Tsunami, Turbulence, Undertone series, Velocity, Wavenumber, Weather front, Wind wave, Young–Laplace equation. Expand index (13 more) »

## Acoustic wave

Acoustic waves (also known as sound waves) are a type of longitudinal waves that propagate by means of adiabatic compression and decompression.

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## Altitude

Altitude or height (sometimes known as depth) is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, atmospheric pressure, and many more).

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## Altostratus undulatus cloud

The altostratus undulatus is a type of altostratus cloud with signature undulations within it.

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## American Geophysical Union

The American Geophysical Union (AGU) is a 501(c)(3) nonprofit organization of geophysicists, consisting of over 62,000 members from 144 countries.

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## Amplitude

The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period).

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## Ansatz

In physics and mathematics, an ansatz (meaning: "initial placement of a tool at a work piece", plural ansätze; or ansatzes) is an educated guessIn his book on "The Nature of Mathematical Modelling", Neil Gershenfeld introduces ansatz, with interpretation "a trial answer", to be an important technique for solving differential equations.

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## Arithmetic mean

In mathematics and statistics, the arithmetic mean (stress on third syllable of "arithmetic"), or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the number of numbers in the collection.

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## Atmosphere

An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body.

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## Atmosphere of Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.

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## Buoyancy

In physics, buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object.

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## Capillary wave

A capillary wave is a wave traveling along the phase boundary of a fluid, whose dynamics and phase velocity are dominated by the effects of surface tension.

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## Conservative vector field

In vector calculus, a conservative vector field is a vector field that is the gradient of some function, known in this context as a scalar potential.

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## Curvature

In mathematics, curvature is any of a number of loosely related concepts in different areas of geometry.

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## Dispersion (water waves)

In fluid dynamics, dispersion of water waves generally refers to frequency dispersion, which means that waves of different wavelengths travel at different phase speeds.

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## Dynamics (mechanics)

Dynamics is the branch of applied mathematics (specifically classical mechanics) concerned with the study of forces and torques and their effect on motion, as opposed to kinematics, which studies the motion of objects without reference to these forces.

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## Earth science

Earth science or geoscience is a widely embraced term for the fields of natural science related to the planet Earth.

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## Fetch (geography)

The fetch, also called the fetch length, is the length of water over which a given wind has blown.

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## Fluid

In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress.

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## Fluid dynamics

In physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids - liquids and gases.

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## Force

In physics, a force is any interaction that, when unopposed, will change the motion of an object.

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## Free surface

In physics, a free surface is the surface of a fluid that is subject to zero parallel shear stress, such as the boundary between two homogeneous fluids, for example liquid water and the air in the Earth's atmosphere.

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## Gravity

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.

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## Green's law

In fluid dynamics, Green's law describes the evolution of non-breaking surface gravity waves propagating in shallow water of gradually varying depth and width.

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## Group velocity

The group velocity of a wave is the velocity with which the overall shape of the wave's amplitudes—known as the modulation or envelope of the wave—propagates through space.

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## Horizontal convective rolls

Horizontal convective rolls, also known as horizontal roll vortices or cloud streets, are long rolls of counter-rotating air that are oriented approximately parallel to the ground in the planetary boundary layer.

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## Hydrostatic equilibrium

In fluid mechanics, a fluid is said to be in hydrostatic equilibrium or hydrostatic balance when it is at rest, or when the flow velocity at each point is constant over time.

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## Infragravity wave

Infragravity waves are surface gravity waves with frequencies lower than the wind waves – consisting of both wind sea and swell – thus corresponding with the part of the wave spectrum lower than the frequencies directly generated by forcing through the wind.

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## Interface (matter)

In the physical sciences, an interface is the boundary between two spatial regions occupied by different matter, or by matter in different physical states.

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## Internal wave

Internal waves are gravity waves that oscillate within a fluid medium, rather than on its surface.

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## Lee wave

In meteorology, lee waves are atmospheric stationary waves.

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## List of things named after Leonhard Euler

Leonhard Euler (1707–1783)In mathematics and physics, there are a large number of topics named in honor of Swiss mathematician Leonhard Euler (1707–1783), who made many important discoveries and innovations.

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## Lunitidal interval

The lunitidal interval, measures the time lag from the Moon passing overhead, to the next high or low tide.

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## Mechanical equilibrium

In classical mechanics, a particle is in mechanical equilibrium if the net force on that particle is zero.

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## Mesosphere

The mesosphere (from Greek mesos "middle" and sphaira "sphere") is the layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere.

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## Momentum

In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.

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## Morning Glory cloud

The Morning Glory cloud is a rare meteorological phenomenon consisting of a low-level atmospheric solitary wave and associated cloud, occasionally observed in different locations around the world.

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## Mountain

A mountain is a large landform that stretches above the surrounding land in a limited area, usually in the form of a peak.

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## National Oceanic and Atmospheric Administration

The National Oceanic and Atmospheric Administration (NOAA; pronounced, like "Noah") is an American scientific agency within the United States Department of Commerce that focuses on the conditions of the oceans, major waterways, and the atmosphere.

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## Nonlinear system

In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input.

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## Ocean

An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere.

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## Orr–Sommerfeld equation

The Orr–Sommerfeld equation, in fluid dynamics, is an eigenvalue equation describing the linear two-dimensional modes of disturbance to a viscous parallel flow.

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## Partial derivative

In mathematics, a partial derivative of a function of several variables is its derivative with respect to one of those variables, with the others held constant (as opposed to the total derivative, in which all variables are allowed to vary).

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## Phase velocity

The phase velocity of a wave is the rate at which the phase of the wave propagates in space.

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## Quasi-biennial oscillation

The quasi-biennial oscillation (QBO) is a quasiperiodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months.

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## Rayleigh's equation (fluid dynamics)

In fluid dynamics, Rayleigh's equation or Rayleigh stability equation is a linear ordinary differential equation to study the hydrodynamic stability of a parallel, incompressible and inviscid shear flow.

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## Rayleigh–Taylor instability

The Rayleigh–Taylor instability, or RT instability (after Lord Rayleigh and G. I. Taylor), is an instability of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid.

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## Resonance

In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.

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## Rogue wave

Rogue waves (also known as freak waves, monster waves, episodic waves, killer waves, extreme waves, and abnormal waves) are large, unexpected and suddenly appearing surface waves that can be extremely dangerous, even to large ships such as ocean liners.

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## Stratosphere

The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere.

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## Stream function

The stream function is defined for incompressible (divergence-free) flows in two dimensions – as well as in three dimensions with axisymmetry.

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## Stress (mechanics)

In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material.

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## Surface tension

Surface tension is the elastic tendency of a fluid surface which makes it acquire the least surface area possible.

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## Surface wave

In physics, a surface wave is a mechanical wave that propagates along the interface between differing media.

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## Tide

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of Earth.

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## Troposphere

The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place.

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## Tsunami

A tsunami (from 津波, "harbour wave"; English pronunciation) or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.

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## Turbulence

In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity.

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## Undertone series

In music, the undertone series or subharmonic series is a sequence of notes that results from inverting the intervals of the overtone series.

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## Velocity

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time.

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## Wavenumber

In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance.

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## Weather front

A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena outside the tropics.

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## Wind wave

In fluid dynamics, wind waves, or wind-generated waves, are surface waves that occur on the free surface of bodies of water (like oceans, seas, lakes, rivers, canals, puddles or ponds).

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## Young–Laplace equation

In physics, the Young–Laplace equation is a nonlinear partial differential equation that describes the capillary pressure difference sustained across the interface between two static fluids, such as water and air, due to the phenomenon of surface tension or wall tension, although usage on the latter is only applicable if assuming that the wall is very thin.

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## Redirects here:

Atmospheric gravity wave, G-mode pulsation, Gravity Wave, Gravity waves, Surface gravity wave.

## References

[1] https://en.wikipedia.org/wiki/Gravity_wave