Cruise inventory

RRS James Clark Ross JR20111025 (JR260A, JR262, JR282)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20111025 (JR260A, JR262, JR282)
Cruise period2011-09-24 — 2011-11-20
StatusCompleted
Port of departureImmingham, United Kingdom
Port of returnStanley, Falkland Islands (Malvinas)
PurposeResearch
ObjectivesThe cruise was the first polar project of the Darwin Initiative and its aim was threefold.

1. To assess, using multiple apparatus types and molecular methods, benthic biodiversity of the least known areas from inner shelf to shelf break of South Georgia.
2. To quantify change over the terminal moraines left behind marking the maximum advance of ice during the last glaciation around South Georgia.
3. To map distributions, densities and rarity of species and habitat types to provide the scientific underpinning for marine protected areas.

The cruise uses similar spatial sampling structure, apparatus and observers to a previous one to Marguerite Bay, West Antarctic Peninsula allowing strong comparability. This was the main cruise of Darwin project 18-019 in Oct/Nov 2011 which is collaborative project between British Antarctic Survey, Government of South Georgia and South Sandwich Islands and the Shallow Marine Surveys Group of the Falkland Islands.
Chief scientistDavid Barnes (British Antarctic Survey)
ProjectMapping benthic biodiversity of the South Georgia continental shelf
Coordinating bodyBritish Antarctic Survey (BAS)
Cruise reportRRS James Clark Ross JR20111025 (JR260A, JR262, JR282) cruise report jr262.pdf — access key 'C' (3.99 MB) 
Ocean/sea areas 
GeneralSouthern Ocean
SpecificSouth Georgia, South Orkney islands
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 28
Description: Underway Temperature and salinity
Water bottle stationsQuantity: number of stations = 11
Description: CTD samples from continental shelf depths - 10 around South Georgia, 1 around South Orkney islands
CTD stationsQuantity: number of stations = 11
Description: CTD samples from continental shelf depths - 10 around South Georgia, 1 around South Orkney islands
CTD stationsQuantity: number of profiles = 15
Description: CTD
Current profiler (eg ADCP)Quantity: activity duration in days = 28
Description: RDI 70 kHz ADCP (Water current data)
Biology and fisheries 
ZoobenthosQuantity: number of deployments = 1
Description: Epibenthic sledge at East South Georgia shelf
Acoustic reflection on marine organisms.Quantity: activity duration in days = 28
Description: Kongsberg EK60 Multifrequency echosounder (38, 120, 200 kHz) (biological habitat mapping)
Other biological/fisheries measurementQuantity: number of hauls = 86
Description: Trawl samples from continental shelf depths - 67 around South Georgia, 9 around Shag Rocks, 10 around South Orkney Islands.
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 28
Description: Onboard ships meteorological
Geology and geophysics 
Core - soft bottomQuantity: number of stations = 6
Description: Box Core samples from continental shelf depths - 5 around South Georgia, 1 around South Orkney islands
Bottom photographyQuantity: number of deployments = 28
Description: Camera lander system samples from continental shelf depths - 24 South Georgia, 4 around South orkney islands
Single-beam echosoundingQuantity: activity duration in days = 28
Description: Kongsberg EK60 Multifrequency echosounder (38, 120, 200 kHz) (biological habitat mapping)
Single-beam echosoundingQuantity: activity duration in days = 28
Description: EA600 Single Beam (12 kHz) (sea-bed bathymetry)
Multi-beam echosoundingQuantity: activity duration in days = 28
Description: Kongsberg EM122 12 kHz multibeam swath system (sea-bed bathymetry)