RRS Challenger CH79
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH79 |
| Cruise period | 1991-05-12 — 1991-06-03 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| Objectives | 1. 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 scientist | Anthony L Rice (Institute of Oceanographic Sciences Deacon Laboratory) |
| Project | MAST 0037 |
| Coordinating body | NERC |
| Cruise report |  (1.27 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | European Community station (48deg 50N 16deg 30W) and the Porcupine Seabight |
| Track charts | (0.02 MB) |
| Measurements | |
| Physical oceanography | |
| Current meters | Quantity: number of stations = 1 Description: deployed & recovered |
| Biology and fisheries | |
| Pelagic bacteria/micro-organisms | Quantity: number of profiles = 1 Description: water bottle cast for pelegic bacteria (10m depth to 10m above bottom at 4833m) |
| Zoobenthos | Quantity: number of hauls = 7 Description: (hauls) epibenthic sledge hauls, abyssal site |
| Zoobenthos | Quantity: number of hauls = 4 Description: (hauls) semi-balloon otter trawls, slope site |
| Zoobenthos | Quantity: number of hauls = 2 Description: (hauls) semi-balloon otter trawls, abyssal site |
| Other biological/fisheries measurement | Quantity: number of deployments = 13 Description: (drops) SMBA Multiple corer casts for benthic bacteria and meiofauna |
| Other biological/fisheries measurement | Quantity: number of deployments = 16 Description: (drops) USNEL box corer casts - macrofauna, abyssal slope |
| Other biological/fisheries measurement | Quantity: number of deployments = 6 Description: (drops) SMBA multicorer casts |
| Geology and geophysics | |
| Bottom photography | Quantity: number of deployments = 5 Description: (drops) WASP - slope site |
| Bottom photography | Quantity: number of deployments = 3 Description: (drops) WASP (wide angle seismic photography) abyssal site |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Current meters | 48° 49' 59" N 16° 30' 0" W — Near bottom current meter (on Bathysnap rig) laid 16 May 1991,recovered 27 May |
| Biology and fisheries | |
| Zoobenthos | 48° 49' 0" N 16° 22' 59" W — 'VET'(as above), laid 25 May 1991, recovered 27 May 1991 |
| Zoobenthos | 48° 46' 59" N 16° 23' 59" W — 'VET'(series of amph. traps from near bottom to 1000m),laid 23May,rec. 25May91 |
| Zoobenthos | 48° 47' 59" N 16° 23' 59" W — benthic amphipod trap, laid 22 May 1991, recovered 23 May 1991 |
| Zoobenthos | 48° 46' 59" N 16° 23' 59" W — benthic amphipod trap, laid 21 May 1991, recovered 22 May 1991 |
| Geology and geophysics | |
| Bottom photography | 48° 46' 59" N 16° 25' 59" W — Bathysnack, laid 22 May 1991, recovered 27 May 1991 |
| Bottom photography | 48° 49' 59" N 16° 30' 0" W — Bathysnap - time lapse benthic camera, laid 16 May 1991, recovered 27 May 1991 |
| Bottom photography | 48° 47' 59" N 16° 25' 59" W — Bathysnack - baited time-lapse benthic camera,laid 16 May 1991,recovered 21 May |
| Bottom photography | 48° 51' 0" N 16° 28' 59" W — Bathysnap - laid 28 May 1991 for 1 year deployment |
