Cruise inventory

RRS Challenger CH9/79

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH9/79
Cruise period1979-06-29 — 1979-07-11
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
Objectives1. To test a new two-tier opening/closing epibenthic sledge.
2. To test the RMT 1+8 monitor and command systems at long slant ranges and particuarly at shallow angles.
3. To obtain benthic samples, with the semi-balloon otter trawl (OTSB) and epibenthic sledge (BN) at a variety of depths in the Porcupine Sea-Bight and particuarly at 2000 and 4000m for comparison with those taken at similar depths in April 1978 during Discovery Cruise 92.
4. To obtain near-bottom mid-water samples at a number of epibenthic sledge stations for evidence of concentration of mid-water organisms in this part of the water column.
5. To test a new acoustic "dolphin" and to examine the effects of changes in the orientation of the acoustic array in monitoring the towed gears and particuarly the RMT 1+8.
Chief scientistAnthony L Rice (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Challenger CH9/79 cruise report ch9_79.pdf — access key 'C' (0.77 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Biology and fisheries 
ZooplanktonQuantity: number of samples = 11
NektonQuantity: number of samples = 22
ZoobenthosQuantity: number of hauls = 17
Description: survey:taxonomy,energy tranfers,distribution
Other biological/fisheries measurementQuantity: number of image series = 11
Description: bottom photography