SDN:B07::NDT020Multiple net/multiple cod-end system stratified oblique horizontal towyo
- Multiple nets are deployed on a single frame with opening and closing capability. in the case of a system like MOCNESS, the first net (0) is deployed to a predetermined depth, open. Once at that depth, that net is closed, at the same time opening the second (net 1) net. On the oblique section up, several different depth intervals are sampled by successive nets. Once at the shallowest point of tow (usually the surface), the next net is open and shot open down to depth. Then this net is closed and again on the way up, several different depth intervals are sampled by successive nets. For systems like the Multinet, the system can be deployed without a net open and the first net is opened at depth. Sampling depths can be adjusted as the environmental structure requires. This deployment strategy can also be done with a single net with multiple cod-end system. Examples of gears that can be deployed that way include the MOCNESS, BIONESS, Multinet, other multiple net opening/closing or closing cod-end systems (Wiebe and Benfield 2003, Plates 28-31).
- Serial sampler stratified towyo
- 2014-10-14 12:14:45.0
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Serial sampler stratified towyo
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