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Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Physical oceanography

strength of ebb

Earth science; Physical oceanography

In the description of tides, the magnitude of the ebb current at the time of maximum speed. This is usually associated with lunar tide phases at spring tides near perigee or with ...

large eddy simulation (LES)

Earth science; Physical oceanography

In the modeling of fluid turbulence, a technique in which eddies above a certain size are directly simulated and the effects of those of smaller size are parameterized in terms of ...

convective adjustment

Earth science; Physical oceanography

In the numerical modeling of ocean circulation, this is a process wherein, after each time step, the vertical potential density gradient is calculated and, if densier water ...

denitrification

Earth science; Physical oceanography

In the ocean this is the process by which bacteria use nitrate instead of oxygen as an oxidant of organic matter. It may be considered as the biological reduction of nitrate or ...

fossil turbulence

Earth science; Physical oceanography

In the ocean, temperature microstructure that remains after the turbulence that presumably created it decays, i.e. there is no velocity microstructure.

euphotic zone

Earth science; Physical oceanography

In the ocean, the sunlit layer from the surface to the depth of 1% light level wherein most of the primary productivity takes place. The depth varies geographically and seasonally ...

Stommel’s demon

Earth science; Physical oceanography

In the theory of the ventilated thermocline, a deepening mixing layer allows only a narrow range of density to subduct at any geographical location. Only water of a particular ...