Cruise inventory

RRS James Clark Ross JR19991016

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR19991016
Cruise period1999-10-16 — 1999-11-07
StatusCompleted
Port of departureMontevideo, Uruguay
Port of returnStanley, Falkland Islands (Malvinas)
PurposeResearch
ObjectivesACCLAIM Antarctic Circumpolar Current Levels from Altimetry and Island Measurements is providing real time data from its network of sea level stations in the Southern Ocean as a contribution to the World Ocean Circulation Experiment (WOCE). The associated research work at POL is an integral part of the many other UK contributions to Core 2, the Southern Ocean component of WOCE. The principal objective is to study variations in the flow of the Antarctic Circumpolar Current (ACC) on large time and space scales. The ACCLAIM network is also a component of GLOSS (Global Sea Level Observing System).

Specific POL objectives for this leg of the cruise are as follows (refer also to cruise JR19991110):
1) To service the sea level Recorder at Port Stanley, Falkland Islands
2) To recover the CROCUS BPR in the Scotia Sea.
3) To service the sea level recorder at Signy
4) To deploy MYRTLE in the Scotia Sea
5) To service the Sea Level Recorder at Vernadsky (time and ice conditions permitting).

Results:
Serviced Stanley sea level recorder.
Recovered Scotia Sea BPR CROCUS (POL 11) 60° 03.08'S 047° 09.96W, depth 2500m.
Deployed MYRTLE (POL 11) 60° 02.98'S 047° 10.20W, depth 2354m.
Serviced Signy sea level recorder.
Tested the Stanley sea level recorder.

All of the objectives of the cruise were achieved apart from the Inverted Echo Sounder deployment at Drake Passage North and to service the Sea Level Recorder at Vernadsky.
Chief scientistPeter R Foden (Proudman Oceanographic Laboratory)
ProjectACCLAIM Antarctic Circumpolar Current Levels from Altimetry and Island Measurements
Cruise reportRRS James Clark Ross JR19991016 cruise report jr_oct99.pdf — access key 'C' (0.67 MB) 
Ocean/sea areas 
GeneralSouth Atlantic Ocean
Track chartsRRS James Clark Ross JR19991016 cruise track — jr_oct99track.pdf (00 MB) 
Measurements 
Physical oceanography 
Sea level (inc. bot. press., inverted echosounder)Quantity: number of recoveries = 1
Description: BPR
Sea level (inc. bot. press., inverted echosounder)Quantity: number of deployments = 1
Description: MYRTLE
Sea level (inc. bot. press., inverted echosounder)Quantity: number of measurements = 2
Description: sea level recorders serviced
Moorings, landers, buoys 
Physical oceanography 
Sea level (inc. bot. press., inverted echosounder)60° 2' 59" S  47° 9' 59" W — deployed MYRTLE (POL 11) at depth 2354m.
Sea level (inc. bot. press., inverted echosounder)60° 3' 59" S  47° 9' 59" W — recovered BPR (POL 11) at depth 2500m.