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Ekman layer, the Glossary

The Ekman layer is the layer in a fluid where there is a force balance between pressure gradient force, Coriolis force and turbulent drag.^[1]

27 relations: Acoustic Doppler current profiler, Arctic, Boundary value problem, Coriolis force, Coriolis frequency, Drag (physics), Ekman spiral, Fluid, Force, Fram (ship), Fridtjof Nansen, Geostrophic current, Hydrostatics, Iceberg, Mixing length model, Modified pressure, No-slip condition, Planetary boundary layer, Pressure-gradient force, Seabed, Stewartson layer, Surface layer, Thesis, Vagn Walfrid Ekman, Vilhelm Bjerknes, Wind, Wind wave.
Boundary layer meteorology

Acoustic Doppler current profiler

An acoustic doppler current profiler (ADCP) is a hydroacoustic current meter similar to a sonar, used to measure water current velocities over a depth range using the Doppler effect of sound waves scattered back from particles within the water column.

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Arctic

The Arctic is a polar region located at the northernmost part of Earth.

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Boundary value problem

In the study of differential equations, a boundary-value problem is a differential equation subjected to constraints called boundary conditions.

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Coriolis force

In physics, the Coriolis force is an inertial (or fictitious) force that acts on objects in motion within a frame of reference that rotates with respect to an inertial frame.

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Coriolis frequency

The Coriolis frequency ƒ, also called the Coriolis parameter or Coriolis coefficient, is equal to twice the rotation rate Ω of the Earth multiplied by the sine of the latitude \varphi. Ekman layer and Coriolis frequency are oceanography.

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Drag (physics)

In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the relative motion of any object, moving with respect to a surrounding fluid.

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Ekman spiral

The Ekman spiral is an arrangement of ocean currents: the directions of horizontal current appear to twist as the depth changes. Ekman layer and Ekman spiral are oceanography.

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Fluid

In physics, a fluid is a liquid, gas, or other material that may continuously move and deform (flow) under an applied shear stress, or external force.

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Force

A force is an influence that can cause an object to change its velocity, i.e., to accelerate, meaning a change in speed or direction, unless counterbalanced by other forces.

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Fram (ship)

Fram ("Forward") is a ship that was used in expeditions of the Arctic and Antarctic regions by the Norwegian explorers Fridtjof Nansen, Otto Sverdrup, Oscar Wisting, and Roald Amundsen between 1893 and 1912.

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Fridtjof Nansen

Fridtjof Wedel-Jarlsberg Nansen (10 October 1861 – 13 May 1930) was a Norwegian polymath and Nobel Peace Prize laureate.

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Geostrophic current

A geostrophic current is an oceanic current in which the pressure gradient force is balanced by the Coriolis effect.

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Hydrostatics

Fluid statics or hydrostatics is the branch of fluid mechanics that studies fluids at hydrostatic equilibrium and "the pressure in a fluid or exerted by a fluid on an immersed body".

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Iceberg

An iceberg is a piece of freshwater ice more than long that has broken off a glacier or an ice shelf and is floating freely in open water.

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Mixing length model

In fluid dynamics, the mixing length model is a method attempting to describe momentum transfer by turbulence Reynolds stresses within a Newtonian fluid boundary layer by means of an eddy viscosity. Ekman layer and mixing length model are oceanography.

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Modified pressure

Some systems in fluid dynamics involve a fluid being subject to conservative body forces.

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No-slip condition

In fluid dynamics, the no-slip condition is a boundary condition which enforces that at a solid boundary, a viscous fluid attains zero bulk velocity.

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Planetary boundary layer

In meteorology, the planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL) or peplosphere, is the lowest part of the atmosphere and its behaviour is directly influenced by its contact with a planetary surface. Ekman layer and planetary boundary layer are boundary layer meteorology.

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Pressure-gradient force

In fluid mechanics, the pressure-gradient force is the force that results when there is a difference in pressure across a surface.

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Seabed

The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. Ekman layer and seabed are oceanography.

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Stewartson layer

In fluid dynamics, a Stewartson layer is a thin cylindrical shear layer that connects two differentially rotating regions in the radial direction, namely the inside and outside the cylinder.

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Surface layer

The surface layer is the layer of a turbulent fluid most affected by interaction with a solid surface or the surface separating a gas and a liquid where the characteristics of the turbulence depend on distance from the interface. Ekman layer and surface layer are boundary layer meteorology and oceanography.

See Ekman layer and Surface layer

References

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

Also known as Eckman layer, Ekman depth, Ekman flow.