Cruise inventory

RRS Challenger CH79

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH79
Cruise period1991-05-12 — 1991-06-03
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
Objectives1. To recover a Bathysnap deployed at 48ºN 20'W in 1990.
2. To obtain a series of benthic samples at 48º 50'N 16º 30'W as part of the IOSDL LRP4.
3. To obtain a series of benthic samples and photographs in the north-western part of the Porcupine Seabight.
4. To obtain two epibenthic sledge samples in the neighbourhood of the Isles of Scilly.
Chief scientistAnthony L Rice (Institute of Oceanographic Sciences Deacon Laboratory)
ProjectMAST 0037
Coordinating bodyNERC
Cruise reportRRS Challenger CH79 cruise report ch79_91.pdf — access key 'C' (1.27 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificEuropean Community station (48deg 50N 16deg 30W) and the Porcupine Seabight
Track chartsRRS Challenger CH79 cruise track — ch79_91track.pdf (00 MB) 
Measurements 
Physical oceanography 
Current metersQuantity: number of stations = 1
Description: deployed & recovered
Biology and fisheries 
Pelagic bacteria/micro-organismsQuantity: number of profiles = 1
Description: water bottle cast for pelegic bacteria (10m depth to 10m above bottom at 4833m)
ZoobenthosQuantity: number of hauls = 7
Description: (hauls) epibenthic sledge hauls, abyssal site
ZoobenthosQuantity: number of hauls = 4
Description: (hauls) semi-balloon otter trawls, slope site
ZoobenthosQuantity: number of hauls = 2
Description: (hauls) semi-balloon otter trawls, abyssal site
Other biological/fisheries measurementQuantity: number of deployments = 13
Description: (drops) SMBA Multiple corer casts for benthic bacteria and meiofauna
Other biological/fisheries measurementQuantity: number of deployments = 16
Description: (drops) USNEL box corer casts - macrofauna, abyssal slope
Other biological/fisheries measurementQuantity: number of deployments = 6
Description: (drops) SMBA multicorer casts
Geology and geophysics 
Bottom photographyQuantity: number of deployments = 5
Description: (drops) WASP - slope site
Bottom photographyQuantity: number of deployments = 3
Description: (drops) WASP (wide angle seismic photography) abyssal site
Moorings, landers, buoys 
Physical oceanography 
Current meters48° 49' 59" N  16° 30' 0" W — Near bottom current meter (on Bathysnap rig) laid 16 May 1991,recovered 27 May
Biology and fisheries 
Zoobenthos48° 46' 59" N  16° 23' 59" W — benthic amphipod trap, laid 21 May 1991, recovered 22 May 1991
Zoobenthos48° 49' 0" N  16° 22' 59" W — 'VET'(as above), laid 25 May 1991, recovered 27 May 1991
Zoobenthos48° 46' 59" N  16° 23' 59" W — 'VET'(series of amph. traps from near bottom to 1000m),laid 23May,rec. 25May91
Zoobenthos48° 47' 59" N  16° 23' 59" W — benthic amphipod trap, laid 22 May 1991, recovered 23 May 1991
Geology and geophysics 
Bottom photography48° 47' 59" N  16° 25' 59" W — Bathysnack - baited time-lapse benthic camera,laid 16 May 1991,recovered 21 May
Bottom photography48° 51' 0" N  16° 28' 59" W — Bathysnap - laid 28 May 1991 for 1 year deployment
Bottom photography48° 46' 59" N  16° 25' 59" W — Bathysnack, laid 22 May 1991, recovered 27 May 1991
Bottom photography48° 49' 59" N  16° 30' 0" W — Bathysnap - time lapse benthic camera, laid 16 May 1991, recovered 27 May 1991