Concept
Unspecified naturalists {rectangular} dredge
| URI | http://vocab.nerc.ac.uk/collection/L22/current/NETT0190/1/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | Natlst dredge | ||
| Definition | An instrument designed for the collection of benthic organisms and bottom material on a variety of grounds. It consists of a rectangular dredge frame, two dredge arms and a triangular mesh net, usually about half as deep as it is wide. The dredge frame varies in length, depending on the size of the towing vessel: 300-380 mm for small boats; 450-600 mm for larger boats; and 750-1300 mm for trawlers. Typically, one dredge arm is attached directly to the tow rope, while the other is attached by a weak link, such as twine, to release the dredge should it become stuck on the seabed. The collection net may be lined with an inner bag of non-impervious material for the collection of sediment. | ||
| Date | 2019-12-02T09:02:24 | ||
| Identifier | SDN:L22::NETT0190 | ||
| Note | accepted | ||
| Is Version Of | NETT0190 | ||
| version | 1 | ||
| Broader | L19:SDNKG17 |
sensor_model | |
| L05 SeaDataNet device categories - (2) | |||
| Related | L35:MAN0002 |
Unknown | |
B75:UNSPEC |
Unspecified | ||
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