Cruise inventory

RRS James Cook JC010_3 (JC10)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Cook (740H)
Cruise identifierJC010_3 (JC10)
Cruise period2007-06-22 — 2007-07-07
Port of departureLisbon, Portugal
Port of returnSouthampton, United Kingdom
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 third.

The objective of this cruise was to undertake a mapping and sampling transect of the Whittard Canyon, in order to make a preliminary assessment of the similarities and differences in biological habitat between this canyon and the less active and less energetic Portuguese canyons. A series of ROV dives would be made to address the following 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?
4) Is the higher engergy environment of the Whittard Canyon, compared with the Nazare and Setubal canyons, reflected on the biological communities that exist there?
Chief scientistDouglas G Masson (National Oceanography Centre, Southampton)
Coordinating bodyNOCS
Cruise reportRRS James Cook JC010_3 (JC10) cruise report jc010.pdf — access key 'C' (4.15 MB) 
Ocean/sea areas 
GeneralBay of Biscay
SpecificPortuguese Canyons, Whittard Canyon
Track chartsRRS James Cook JC010_3 (JC10) cruise track — jc010trk.pdf (0.20 MB) 
Physical oceanography 
CTD stationsQuantity: number of stations = 2
Description: CTD
Geology and geophysics 
DredgeQuantity: number of hauls = 2
Description: Agassiz trawls
Core - soft bottomQuantity: number of cores = 7
Description: Megacores for sampling of macrofauna
Core - soft bottomQuantity: number of cores = 50
Description: Push core
In-situ seafloor measurement/samplingQuantity: number of surveys = 9
Description: ISIS ROV dives, swath bathymetry
Data held at BODC 
Discrete samples 
11  Carbon concentrations in sediment
Nitrogen concentrations in suspended particulate material