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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

arrested salt wedge estuary

Earth science; Physical oceanography

One of four principal types of estuaries as distinguished by prevailing flow conditions. This is a type in which there is a relatively stationary interface between an underlying ...

Arctic Surface Water (ASW)

Earth science; Physical oceanography

A water mass found in the arctic domain in the North Atlantic Ocean. The ASW is the summer surface water mass above the seasonal thermocline and has temperatures greater than 0° ...

Amundsen Sea

Earth science; Physical oceanography

A marginal sea of Antarctica centered at about 112° W and 73° S. It sits between the Bellingshausen Sea to the east and the Ross Sea to the west, with the Antarctic Circle ...

Agulhas Current

Earth science; Physical oceanography

The western boundary current in the Indian Ocean south of 30°S. The southern Agulhas Current flows southwestward as a narrow jet along a steep continental slope, and is normally ...

Acoustic Mid-Ocean Dynamics Experiment (AMODE)

Earth science; Physical oceanography

A 1991-1992 experiment involving a tomography array located between Puerto Rico and Bermuda. The width of the array was abouata 670 km and is consisted of six mooring acoustic ...

azoic zone

Earth science; Physical oceanography

Term used to describe the part of the deep sea thought lifeless in the mid-19th century. It was thought that the abyss was filled with a thick layer of 4° C (since sea water was ...

albedo

Earth science; Physical oceanography

The proportion of incident radiation reflected by a surface. About 30% of the incoming solar energy is reflected back to space from the earth, of which 25% is reflected by clouds ...