Concept
Unspecified piston corer
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL2018/2/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | UnSpec piston corer | ||
| Definition | A generic term for a coring device designed to extract lengthy samples of undisturbed soft surface sediment. This type of corer is based on the original design by Swedish oceanographer Borje Kullenberg. Piston corers consist of a small gravity corer, a tripping arm with a weight, and a long, heavy corer containing a piston, connected to the ship or platform by a wire. When the gravity corer touches the sediment surface, the tripping mechanism is activated, thus allowing the piston corer to free fall to the bottom. Upon contact, the piston inside the corer stops at the sediment surface, thus creating a pressure differential that helps the soft material enter the corer's hollow open tube. The sediment sample is retained by a seal at the bottom of the device for retrieval. The sediment samples collected can be up to 30 m in length, and are less prone to compression and disturbance compared to samples from gravity corers. | ||
| Date | 2024-02-21T11:03:12 | ||
| Identifier | SDN:L22::TOOL2018 | ||
| Note | accepted | ||
| Is Version Of | TOOL2018 | ||
| Previous Version | 1 | ||
| version | 2 | ||
| Broader | L05:51 |
unconsolidated sediment corers | |
| Related | B75:UNSPEC |
Unspecified | |
L35:MAN0001 |
unspecified | ||
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