Transmissometer

Transmissometer

An instrument for the measurement of the transmission of light of a given wavelength over a known distance in a seawater sample. The wavelengths are usually chosen based on the particles being studied, with about 660 nanometers the wavelength most often used. The changes in transmission are primarily related to changes in the abundance and type of particles present, with most variations resulting from particles less than 20 microns in diameter.

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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

transmissometer

Natural environment; Coral reefs

An instrument for measuring transmission of light through a fluid.

transmissometer

Weather; Meteorology

An instrument for measuring the extinction coefficient of the atmosphere and for the determination of visual range. See runway visual range, visibility meter.

transmissometer

Earth science; Physical oceanography

An instrument for the measurement of the transmission of light of a given wavelength over a known distance in a seawater sample. The wavelengths are usually chosen based on the ...

transmissometer

Weather; General weather

An electronic instrument system which provides a continuous record of the atmospheric transmission between two fixed points. By showing the transmissivity of light through the ...

transmissometer

Aviation; Air traffic control; Airport

An apparatus used to determine visibility by measuring the transmission of light through the atmosphere. It is the measurement source for determining runway visual range (RVR).

transmissometer

Mining; General mining; Mineral mining

An instrument that measures the capability of a fluid to transmit light; esp. one that measures the turbidity of water by determining the percent transmission of a light beam.

oceanography

Earth science; Physical oceanography

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

ocean

Earth science; Physical oceanography

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.

saltwater

Earth science; Physical oceanography

Containing water that is very salty. Oceans are saltwater bodies that are fed mainly by rivers.

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Earth science; Physical oceanography

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pseudospectral method

Earth science; Physical oceanography

In numerical modeling, an approximation which uses interpolating functions to estimate derivatives of fields represented on a grid in physical space. It is so-called because the ...

flux Richardson number

Earth science; Physical oceanography

A dimensionless number expressing the ratio of turbulent energy lost to buoyant forces to the energy gained by eddy stress acting on the mean shear. It is the crucial ...