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RRS James Clark Ross JR20001121 (JR55)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20001121 (JR55)
Cruise period2000-11-21 — 2000-12-14
StatusCompleted
Port of departureStanley, Falkland Islands (Malvinas)
Port of returnStanley, Falkland Islands (Malvinas)
PurposeResearch
ObjectivesObjectives:
1. To determine the interannual variability of the position, structure, transport & other properties of the ACC at Drake Passage.
2. By comparing geostrophic velocities with those from the lowered ADCP, determine the size of ageostrophic motions & attempt to estimate barotropic components.
3. To examine the temperature & salinity structure of water flowing through Drake Passage.
Chief scientistStuart A Cunningham (Southampton Oceanography Centre)
ProjectDrake Passage repeats, WOCE
Cruise reportRRS James Clark Ross JR20001121 (JR55) cruise report jr55.pdf (6.61 MB) 
Ocean/sea areas 
GeneralSouth Atlantic Ocean
SpecificDrake Passage
Track chartsRRS James Clark Ross JR20001121 (JR55) cruise track — jr55trk.pdf (0.05 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of profiles = 1
Description: At a 2000m depth just off-shore a CTD station was tested.
CTD stationsQuantity: number of profiles = 1
Description: In Rothera Bay CTD 032 was completed.
CTD stationsQuantity: number of stations = 31
Description: Stations were sampled along the Drake Passage repeat hydrography section.
Sea level (inc. bot. press., inverted echosounder)Quantity: number of recoveries = 1
Description: At POL 8 site a bottom pressure recorder was recovered.
Biology and fisheries 
Gear researchDescription: Problems were accounted with CTD pylon and many trials had to take place. No. of trials not noted.
Gear researchQuantity: number of experiments = 1
Description: ADCP calibration data was taken on the way to POL 8 mooring.