Euphotic zone

Euphotic zone

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 and can range from a few metres in turbid, highly productive waters near the shore to around 200 m in tropical waters. The ocean average is around 100 m. It is a zone with sharp gradients in illumination, temperature and salinity, and overlies the aphotic zone. It is also known as the photic zone.

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Part of Speech: noun
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Industry/Domain: Earth science
Category: Physical oceanography
Company: Texas A&M University
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Related terms

euphotic zone

Natural environment; Coral reefs

The layer of the ocean that receives sufficient sunlight for photosynthesis. The depth to which 1% of incident light penetrates (1% is the minimum amount of light required for ...

euphotic zone

Biology; Cell biology

The upper part of the marine biome where light penetrates and photosynthesis occurs; usually extends to about 200 meters below the water surface.

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 ...

euphotic zone

Agriculture; General agriculture

Surface layer of a body of water where sufficient light penetrates to allow photosynthesis to occur, down to the depth at which the light intensity falls to 1% of incident light.

euphotic zone

Weather; Meteorology

The layer of a water body that receives sufficient sunlight to support effective photosynthesis.

euphotic zone

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The zone of water penetrable by sunlight.

oceanography

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The scientific study and exploration of the ocean and of the plants and animals that live in it.

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The body of salt water that covers about 70 percent of the Earth's surface. The Pacific Ocean is by far the world's largest ocean.

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