RRS Challenger CH9/84

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH9/84
Cruise period1984-10-29 — 1984-11-13
Port of departureArdrossan, United Kingdom
Port of returnArdrossan, United Kingdom
Objectives1. To sample the fish populations of the Rockall Trough using the Granton trawl and the semi-balloon otter trawl.
2. To sample the fish populations of the Porcupine Sea Bight using the Granton trawl and the semi-balloon otter trawl.
3. To carry out near-bottom sampling with the RMT 8.
4. To experiment with lights attached to bottom trawls.
5. To experiment with midwater trawls.
6. To collect material for Institutes and Universities.
Chief scientistJohn D M Gordon (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH9/84 cruise report ch9_84.pdf (0.42 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificRockall Trough/ Porcupine Bight
Track chartsRRS Challenger CH9/84 cruise track — trk3160.html
Biology and fisheries 
ZooplanktonQuantity: number of hauls = 7
Eggs and larvaeQuantity: number of hauls = 7
ZoobenthosQuantity: number of hauls = 15
Pelagic fishQuantity: number of hauls = 12
Description: survey:taxonomy,distribution,biomass determination,energy transfers
Demersal fishQuantity: number of hauls = 14
Description: survey:taxonomy,distribution,biomass determination,energy transfers
Gear researchQuantity: number of hauls = 8
Description: the effect of artificial light on trawls.
Exploratory fishingQuantity: number of hauls = 26