skip to main content

Content language

PREFERRED TERM
SDN:B07::NDT023Multiple net system oblique stepped discontinuous horizontal tow  
DEFINITION
  • Multiple nets are deployed on a single frame with opening and closing capability. The net system is deployed to a predetermined depth with the first net either open or closed. At depth, the first net is opened (if it was closed) or closed (if it was open) and the next net opened in this case. The open net is towed horizontally for some distance and then closed. The next net is NOT open upon the previous net's closing. The net system is raised to another predetermined depth and the next net is open and fishes for some distance/time. That net is then closed again without opening the next net and raised to a new depth. The next net is opened at that depth, fishes horizontally for some distance/time. That net is then closed again without opening the next net and raised to a new depth. The next net is opened at that depth, fishes horizontally for some distance/time, and is then closed. This sequence continues until all nets are fished at the specific required depth intervals. In this deployment configuration, the intervals between depths are NOT sampled. This kind of tow has been done using the "Macroplankton trawl" for catching macroplankton and micronekton (Krafft et al. 2010).
ENTRY TERMS
  • Serial sampler discontinuous stepped oblique tow
NOTE
  • accepted
IDENTIFIER
  • SDN:B07::NDT023
DATE
  • 2014-10-14 12:14:45.0
IDENTIFIER
  • SDN:B07::NDT023
VERSION
  • 1
IN OTHER LANGUAGES
Serial sampler discontinuous stepped oblique tow
URI
http://vocab.nerc.ac.uk/collection/B07/current/NDT023/
Download this concept: