Cruise inventory

RRS James Cook JC010_2 (JC10)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Cook (740H)
Cruise identifierJC010_2 (JC10)
Cruise period2007-06-03 — 2007-06-21
Port of departureCadiz, Spain
Port of returnLisbon, Portugal
ObjectivesThe major objective of RRS James Cook 10 was to increase our understanding of how seafloor environmental variables affect the biodiversity, structure, function and dynamics of faunal communities in two specific 'biological hotspot' environments, mud volcanoes and submarine canyons, on the NE Atlantic continental slope. The cruise was jointly supported by OCEANS 2025 (Theme 5) and the EU Hotspot Environment Research on the Margins of European Seas (HERMES) project.

The cruise comprises three legs, of which this is the second.

The objective of this cruise was to investigate ecosystems in the Nazare, Cascais and Setubal Canyons where the supply of organic material is considerably greater than on the adjacent continental slopes. To achieve this goal, a series of ROV dives will be made at different water depths to address the following scientific questions:

1) How do the ecosystems vary down canyon, between canyons where the environmental drivers may be different, and between the canyons and the adjacent slopes?
2) What is the small scale variability in seabed faunas related to local topography e.g. boulders, ledges and local changes in environmental parameters e.g. current strength or water mass?
3) Are cold water corals present in the canyons and under what environmental conditions?
Chief scientistDouglas G Masson (National Oceanography Centre, Southampton)
Coordinating bodyNOCS
Cruise reportRRS James Cook JC010_2 (JC10) cruise report jc010.pdf — access key 'C' (4.15 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificGulf of Cadiz
Track chartsRRS James Cook JC010_2 (JC10) cruise track — jc010trk.pdf (0.20 MB) 
Physical oceanography 
CTD stationsQuantity: number of stations = 8
Description: CTD
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 3
Description: Mini boxcore
Core - soft bottomQuantity: number of cores = 5
Description: Megacores for sampling of macrofauna
Core - soft bottomQuantity: number of cores = 50
Description: Push cores for organic chemistry, foraminiferal studies, geology and microbiology
Bottom photographyQuantity: number of deployments = 1
Description: Bathysnap camera
In-situ seafloor measurement/samplingQuantity: number of surveys = 14
Description: ISIS ROV dives, swath bathymetry
Data held at BODC 
1  Acoustic current meter

BODC idDate/TimeLocationDoc.
7543312007-06-07 09:48  — 2007-06-24 14:07 39° 34' 20" N  10° 17' 51" W  View metadata report for BODC series reference number 754331
Discrete samples 
7  Carbon concentrations in sediment
Nitrogen concentrations in suspended particulate material