Cruise inventory

RRS James Clark Ross JR20060216 (JR136, JR137)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20060216 (JR136, JR137)
Cruise period2006-02-15 — 2006-02-17
StatusCompleted
Port of departureRothera, Antarctica
Port of returnRothera, Antarctica
PurposeResearch
ObjectivesThe primary objectives of this cruise on the RRS James Clark Ross was to recover two moorings previously deployed during cruise JR 112/113 (24/1/05- 24/1/05) and also redeploy the two moorings at the same locations. This cruise was run in conjunction with Rothera Biogeochemical Times Series site, involving moorings at ~2 miles offshore as well as another mooring located in the Marguerite Trough, 22 miles from the BAS research station at Rothera. A CTD station was conducted at each of the mooring sites. A 10 station CTD transect was also taken. This involved 6 CTDs across the northern entrance to Marguerite Bay between Adelaide and Alexander Island and 4 CTDs across the entrance to Marguerite Bay running away from the moorings along the Faure Passage.

One 'deep' mooring 22 miles from Rothera research station with a ~840m water column depth and one 'shallow' mooring at Ryder Bay Rothera Biogeochemical Time Series site (RaTS) 2 miles from Rothera with a ~500m water column depth. CTDs were also taken at the mooring sites prior to retrieval. A 10 station CTD transect was also taken with 6 CTDs across the northern entrance to Marguerite Bay between Adelaide and Alexander Island and 4 across Marguerite Bay along the Faure Passage.

Deployment of the shallow mooring containing CTDs, ADCPs, RCM7s, a sediment trap, RCM, temperature recorder (TR) and temperature depth recorder (TDR) all set to record once per hour at the RaTS. Deplyment of the deep mooring containing ADCPs, CTDs, RCM7s, a sediment trap, TR, TDR and Nortek current meter all set to record once per hour.

CTD cast measurements were made using SBE 911plus - temperature and conductivity sensors, altimeter, SBE 42 oxygen sensor and a Chelsea Industries transmissometer. The CTD was in a Rosette frame with Niskin bottles to collect water samples.
Chief scientistKeith Weston (University of East Anglia School of Environmental Sciences)
Cruise reportRRS James Clark Ross JR20060216 (JR136, JR137) cruise report jr136_137.pdf — access key 'C' (0.83 MB) 
Ocean/sea areas 
GeneralSouth Atlantic Ocean
SpecificMarguerite Bay between Adelaide and Alexander Island, Antartica. South Atlantic Ocean.
Track chartsRRS James Clark Ross JR20060216 (JR136, JR137) cruise track — jr136_137trk.pdf (00 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of stations = 12
Description: CTD measurements made using a SeaBird 911 plus, consisting of temperature and conductivity sensors, an altimeter, an SBE42 oxygen sensor and a Chelsea Instruments transmissometer.
Current profiler (eg ADCP)Quantity: number of recoveries = 2
Description: shallow and deep moorings
Current profiler (eg ADCP)Quantity: number of deployments = 2
Description: shallow and deep moorings
Other physical oceanographic measurementsQuantity: number of recoveries = 2
Description: shallow and deep moorings
Other physical oceanographic measurementsQuantity: number of deployments = 2
Description: shallow and deep moorings
Chemical oceanography 
PhosphateQuantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; nutrients
NitrateQuantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; nutrients
NitriteQuantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles
AmmoniaQuantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; nutrients
IsotopesQuantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; 15NO3- and 18O
Other chemical oceanographic measurementsQuantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; silicic acid, biogenic silica, iodine, XRF and dissolved barium
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; chlorophyll a
Particulate organic matter (inc POC, PON)Quantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; POC and PON
Dissolved organic matter (inc DOC)Quantity: number of stations = 12
Description: CTD casts, samples taken from Niskin bottles; DOC, DIC and DON
Sediment trapsQuantity: number of deployments = 2
Description: shallow and deep moorings
Sediment trapsQuantity: number of recoveries = 2
Description: shallow and deep moorings
Data held at BODC 
Series/Profiles 
1  Acoustic doppler current profiler
Platform or instrument orientation
Acoustic backscatter in the water column
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Reference numbers
Date and time
Platform or instrument orientation
Acoustic backscatter in the water column
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7706562006-02-17 11:36:06  — 2006-12-17 02:21:06 67° 33' 58" S  68° 14' 3" W  View metadata report for BODC series reference number 770656
3  Moored CTD
Moored instrument depth
Density of the water column
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time
Moored instrument depth
Density of the water column
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7761542006-02-17 13:59:57  — 2006-12-16 21:59:57 67° 33' 58" S  68° 14' 3" W  View metadata report for BODC series reference number 776154
7761912006-02-17 13:59:57  — 2006-12-16 21:59:57 67° 33' 58" S  68° 14' 3" W  View metadata report for BODC series reference number 776191
7762222006-02-17 13:59:57  — 2006-12-16 21:59:57 67° 33' 58" S  68° 14' 3" W  View metadata report for BODC series reference number 776222
2  Water temperature and/or salinity monitor
Sea level
Temperature of the water column
Reference numbers
Date and time
Sea level
Temperature of the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7759622006-02-17 13:59:57  — 2006-12-16 21:59:57 67° 33' 58" S  68° 14' 3" W  View metadata report for BODC series reference number 775962
7773052006-02-17 13:59:57  — 2006-12-16 21:59:57 67° 33' 58" S  68° 14' 3" W  View metadata report for BODC series reference number 777305