Concept
Hydro-Bios RingTrawl (CalCOFI) net
| URI | http://vocab.nerc.ac.uk/collection/L22/current/NETT0200/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | Hydro-Bios RingTrawl CalCOFI net | ||
| Definition | An oceanographic plankton net based on the California Cooperative Oceanic Fisheries Investigations (CalCOFI) design. It is designed for quantitative sampling of larger volumes of water during horizontal or oblique tows. Typically the net is lowered to a set depth and towed obliquely at a 45 degrees to the surface at a constant speed. The net may also be used for horizontal and flat-angled oblique tows. It features a 100 cm diameter stainless steel ring, equipped with a 4 meter long net bag, and is designed to operate in conjunction with a 22 kg V-Fin depressor to create negative lift. The sample is concentrated inside a removable plastic net bucket with side window (covered with sieve gauze). A Mechanical Flow Meter can also be fixed in the net to measure the filtered water volume. Standard mesh size is 500 um, and the net opening area is 0.7854 m-2. | ||
| Date | 2022-02-22T17:09:18 | ||
| Identifier | SDN:L22::NETT0200 | ||
| Note | accepted | ||
| Has Current Version | 1 | ||
| version | 1 | ||
| inScheme | http://vocab.nerc.ac.uk/scheme/SDNDEV/current/ | ||
| Broader | L05:22 |
plankton nets | Mapping: 1707631 |
| Related | L35:MAN0198 |
Hydro-Bios | Mapping: 1707645 |
B75:ORG00761 |
Hydro-Bios Apparatus GmbH | Mapping: 1707638 | |
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