hydraulic corer

views updated May 08 2018

hydraulic corer (piston corer) A sampling tube that penetrates marine or lake sediments by hydraulic methods, instead of being either a gravity corer or a drilling corer. One version is the Mackereth corer.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

hydraulic corer

views updated May 23 2018

hydraulic corer(piston corer) A tube used to obtain samples from lake or marine sediments, which penetrates the material by hydraulic pressure. The Mackereth corer is a hydraulic corer. See also gravity corer.

A Dictionary of Ecology MICHAEL ALLABY

gravity corer

views updated Jun 11 2018

gravity corer A tube used to obtain samples of lake or marine sediments, which penetrates the material under its own weight. See also hydraulic corer.

A Dictionary of Ecology MICHAEL ALLABY

gravity corer

views updated May 08 2018

gravity corer A sampling tube that penetrates into marine or lake sediments under its own weight. See also HYDRAULIC CORER.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

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Lake sediments

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