Cruise inventory

RRS Discovery D377 (D378)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD377 (D378)
Cruise period2012-07-05 — 2012-07-27
StatusCompleted
Port of departureSouthampton, United Kingdom
Port of returnSouthampton, United Kingdom
PurposeResearch
ObjectivesObjectives

1. Create high-resolution ecological maps at scales of <1 m^2 to 100 km^2.
2. Use collected data to test hypotheses focusing on if any observed faunal distributions are linked with the spatial patterns of other fauna, habitat, food availability, or environmental conditions.
3. Use the results to improve estimates of deep-sea biodiversity and ecosystem function of megafauna and relate the findings to factors such as food availability.

Tasks of the cruise included:
- Autosub6000 ecological mapping (collecting one or more of multibeam, photography, CTD, and optical backscatter data)
- megacoring
- box coring
- CTD deployments
- glider recovery (in connection with Fastnet)
Chief scientistHenry Ruhl (National Oceanography Centre, Southampton)
ProjectAutonomous Ecological Surveying of the Abyss (AESA)
Coordinating bodyNatural Environment Research Council (NERC)
Cruise reportRRS Discovery D377 (D378) cruise report d377.pdf — access key 'C' (6.60 MB) 
Ocean/sea areas 
GeneralCeltic Sea
North East Atlantic Ocean (limit 40W)
SpecificPorcupine Abyssal Plain
Track chartsRRS Discovery D377 (D378) cruise track — d377trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 23
Description: Sea surface hydrography and meteorology system (2 x Kipp & Zonen CM6B, 2 x SKYE 510, Vaisala HMP45A, Vaisala PTB110, Gill Windsonic option 3, WET Labs WETStar, WET Labs CSTAR, Sea-Bird SBE 45, Sea-Bird SBE 38)
Water bottle stationsQuantity: number of stations = 7
Description: CTD (Sea-Bird SBE 911plus with digiquartz and dual SBE 3P & SBE 4C sensors, Sea-Bird SBE 32 24-way carousel, Sea-Bird SBE 43, Benthos PSA-916T, Aquatracka MKIII, 2 x Chelsea 2pi PAR or ISUS nitrate, WETLabs BBRTD, Chelsea Aquatracka MKII)
CTD stationsQuantity: number of stations = 7
Description: CTD (Sea-Bird SBE 911plus with digiquartz and dual SBE 3P & SBE 4C sensors, Sea-Bird SBE 32 24-way carousel, Sea-Bird SBE 43, Benthos PSA-916T, Aquatracka MKIII, 2 x Chelsea 2pi PAR or ISUS nitrate, WETLabs BBRTD, Chelsea Aquatracka MKII)
Transparency (eg transmissometer)Quantity: activity duration in days = 23
Description: Sea surface hydrography and meteorology system (2 x Kipp & Zonen CM6B, 2 x SKYE 510, Vaisala HMP45A, Vaisala PTB110, Gill Windsonic option 3, WET Labs WETStar, WET Labs CSTAR, Sea-Bird SBE 45, Sea-Bird SBE 38)
Current profiler (eg ADCP)Quantity: activity duration in days = 23
Description: Teledyne RDI Ocean Observer (75 kHz/150 kHz) ADCP (hull mounted)
Contamination 
Other contaminant measurementsQuantity: number of experiments = 2
Description: Crude oil spill impact experiments (with sediment cores and near bottom seawater)
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 23
Description: Sea surface hydrography and meteorology system (2 x Kipp & Zonen CM6B, 2 x SKYE 510, Vaisala HMP45A, Vaisala PTB110, Gill Windsonic option 3, WET Labs WETStar, WET Labs CSTAR, Sea-Bird SBE 45, Sea-Bird SBE 38)
Biochemical measurements (eg lipids, amino acids)Quantity: number of deployments = 40
Description: Megacore samples
Benthic bacteria/micro-organismsQuantity: number of deployments = 40
Description: Megacore samples
ZoobenthosQuantity: number of deployments = 40
Description: Megacore samples
ZoobenthosQuantity: number of cores = 3
Description: Box core
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 23
Description: Sea surface hydrography and meteorology system (2 x Kipp & Zonen CM6B, 2 x SKYE 510, Vaisala HMP45A, Vaisala PTB110, Gill Windsonic option 3, WET Labs WETStar, WET Labs CSTAR, Sea-Bird SBE 45, Sea-Bird SBE 38)
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 3
Description: Box core
Core - soft bottomQuantity: number of deployments = 40
Description: Megacore samples
Bottom photographyQuantity: number of track lines = 1
Description: SHRIMP (Imenco still camera, 2x video camera)
Single-beam echosoundingQuantity: activity duration in days = 23
Description: Echosounding (echo sounder)
Multi-beam echosoundingQuantity: number of track lines = 1
Description: SHRIMP (Imenco still camera, 2x video camera)
Multi-beam echosoundingQuantity: activity duration in days = 23
Description: Echosounding (echo sounder)
Moorings, landers, buoys 
Physical oceanography 
Other physical oceanographic measurements48° 27' 59" N  9° 57' 59" W — Glider - Coprolite (pick up only)
Geology and geophysics 
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M56
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M49
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M51
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M54
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M57
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M55
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M50
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M52
Bottom photography49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M53
Multi-beam echosounding49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M51
Multi-beam echosounding49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M49
Multi-beam echosounding50° 22' 59" N  17° 41' 59" W — Autosub6000 deployment M58
Multi-beam echosounding49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M57
Multi-beam echosounding49° 0' 0" N  16° 30' 0" W — Autosub6000 deployment M50