Cruise inventory

RRS James Clark Ross JR19960720 (JR14)

Cruise plan

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR19960720 (JR14)
Cruise period1996-07-20 — 1996-08-22
StatusCompleted
Port of departureGrimsby, United Kingdom
Port of returnGrimsby, United Kingdom
Objectives<a href="http://www.ices.dk/ocean/project/esop/reports/jcr96.htm">report</a>

1) Complete a hydrographic and geochemical survey sufficient to locate the position of the gyre and describe it fully in terms of hydrography, carbon, oxygen, nutrients, CFC tracers and background SF6.

2) Simultaneously with the survey, deploy sound-source moorings in a "box" pattern surrounding the main Greenland Sea Gyre.

3) Following the survey and moorings, release the tracer and floats over a period of one and a half weeks by a series of short tows near the centre of the gyre.

All of these objectives were achieved. On the first leg, 27 full-depth hydrographic-plus chemistry stations were done in a pattern around the gyre to form the survey, and 7 sound-source moorings were deployed (see fig. 2.1). On the second leg, 320kg of the tracer SF6 was released in a series of streaks aorund the nominal centre of the gyre and (see fig. 3.1, 3.2). Also on this leg, floats were deployed around the same area and a further mooring was set.
Chief scientistAndrew J Watson (University of East Anglia School of Environmental Sciences)
ProjectESOP-2/MAST III
Coordinating bodyESOP Project Office, SMR, Bergen/EC
Ocean/sea areas 
GeneralGreenland Sea
North East Atlantic Ocean (limit 40W)
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 25
Description: +pCO2 and fluorescence
Water bottle stationsQuantity: number of stations = 30
Description: 1 with T only 24 water bottles
CTD stationsQuantity: number of stations = 30
Geochemical tracers (eg freons)Quantity: 30
Description: FR12GCTX
Geochemical tracers (eg freons)Quantity: 30
Description: DSF6GCDX
Geochemical tracers (eg freons)Quantity: 30
Description: FR11GCTX
Geochemical tracers (eg freons)Quantity: 30
Description: F113GCTX
Surface drifters/drifting buoysQuantity: 1
Description: +H74 "Carioca" pCO2 drifting buoy
Neutrally buoyant floatsQuantity: 14
Description: 8 sound-source moorings, 6 floats isobaric drifters
Other physical oceanographic measurementsQuantity: number of deployments = 14
Description: horizontal CTD tows, t, S & pressure at 350-440m depth
Chemical oceanography 
OxygenQuantity: 30
Carbon dioxideQuantity: 1
Description: +H74 "Carioca" pCO2 drifting buoy
Carbon dioxideQuantity: 30
Description: TCO2CBTX
Other dissolved gasesQuantity: 30
Description: QCMXGCTX
PhosphateQuantity: 30
NitrateQuantity: 30
SilicateQuantity: 30
AlkalinityQuantity: 30
Moorings, landers, buoys 
Physical oceanography 
Surface drifters/drifting buoys74° 59' 53" N  2° 58' 59" W — "Carioca" pCO2 drifting buoy
Neutrally buoyant floats75° 18' 53" N  1° 59' 30" W — deployment of float 679 isobaric drifter
Neutrally buoyant floats73° 54' 35" N  5° 30' 17" E — S09 sound-source mooring, depth 3200m
Neutrally buoyant floats74° 40' 41" N  0° 1' 30" W — S12 sound-source mooring, depth 3730m
Neutrally buoyant floats75° 39' 47" N  4° 36' 24" W — S08 sound-source mooring, depth 3270m
Neutrally buoyant floats75° 12' 29" N  2° 34' 48" W — deployment of float 675 isobaric drifter
Neutrally buoyant floats75° 5' 35" N  1° 16' 41" W — deployment of float 676 isobaric drifter
Neutrally buoyant floats75° 35' 12" N  2° 30' 35" W — deployment of float 678
Neutrally buoyant floats74° 55' 57" N  9° 3' 11" E — S13 sound-source mooring
Neutrally buoyant floats75° 19' 59" N  4° 0' 6" W — deployment of float 677 isobaric drifter
Neutrally buoyant floats74° 49' 59" N  3° 0' 35" W — deployment of float 680 isobaric drifter
Neutrally buoyant floats72° 36' 47" N  5° 10' 41" W — S14 sound-source mooring, depth 2910m
Neutrally buoyant floats73° 18' 17" N  0° 9' 53" E — S10 sound-source mooring, depth 3080m
Neutrally buoyant floats73° 58' 11" N  5° 35' 53" W — S11 sound-source mooring, depth 3430m
Neutrally buoyant floats75° 41' 48" N  5° 57' 47" W — S13 sound-source mooring, depth 3283m
Data held at BODC 
Series/Profiles 
27  CTD/STD cast
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
6043081996-07-26 00:20 73° 37' 12" N  3° 6' 0" W  View metadata report for BODC series reference number 604308
6043211996-07-26 14:19 74° 2' 59" N  6° 24' 36" W  View metadata report for BODC series reference number 604321
6043331996-07-26 20:39 74° 15' 0" N  8° 31' 47" W  View metadata report for BODC series reference number 604333
6043451996-07-27 03:26 74° 35' 24" N  6° 45' 0" W  View metadata report for BODC series reference number 604345
6043571996-07-27 08:47 75° 0' 0" N  7° 0' 0" W  View metadata report for BODC series reference number 604357
6043691996-07-27 22:08 76° 19' 11" N  9° 59' 24" W  View metadata report for BODC series reference number 604369
6043701996-07-28 15:10 75° 42' 35" N  5° 42' 0" W  View metadata report for BODC series reference number 604370
6043821996-07-28 20:45 75° 44' 23" N  7° 46' 11" W  View metadata report for BODC series reference number 604382
6043941996-07-29 02:26 75° 19' 11" N  6° 11' 24" W  View metadata report for BODC series reference number 604394
6044011996-07-29 07:58 75° 0' 0" N  4° 59' 24" W  View metadata report for BODC series reference number 604401
6044131996-07-29 13:34 74° 35' 59" N  3° 47' 59" W  View metadata report for BODC series reference number 604413
6044251996-07-29 21:42 74° 11' 23" N  2° 23' 59" W  View metadata report for BODC series reference number 604425
6044371996-07-30 09:25 73° 27' 35" N  0° 24' 35" W  View metadata report for BODC series reference number 604437
6044491996-07-30 16:57 73° 0' 0" N  1° 0' 36" E  View metadata report for BODC series reference number 604449
6044501996-07-31 00:05 73° 47' 59" N  2° 0' 35" E  View metadata report for BODC series reference number 604450
6044621996-07-31 08:42 73° 47' 59" N  2° 0' 35" E  View metadata report for BODC series reference number 604462
6044741996-07-31 18:39 74° 23' 24" N  3° 6' 0" E  View metadata report for BODC series reference number 604474
6044861996-08-01 01:45 74° 40' 12" N  0° 0' 0" E  View metadata report for BODC series reference number 604486
6044981996-08-01 09:21 75° 0' 0" N  1° 1' 12" E  View metadata report for BODC series reference number 604498
6045051996-08-01 15:40 75° 0' 0" N  1° 31' 12" W  View metadata report for BODC series reference number 604505
6045171996-08-01 20:51 74° 45' 0" N  2° 0' 35" W  View metadata report for BODC series reference number 604517
6045291996-08-02 02:16 75° 0' 0" N  3° 0' 35" W  View metadata report for BODC series reference number 604529
6045301996-08-02 07:16 75° 22' 47" N  3° 15' 0" W  View metadata report for BODC series reference number 604530
6045421996-08-02 17:08 76° 15' 0" N  2° 30' 0" W  View metadata report for BODC series reference number 604542
6045541996-08-03 00:29 75° 30' 0" N  1° 0' 0" W  View metadata report for BODC series reference number 604554
6045661996-08-03 04:55 75° 15' 0" N  1° 0' 0" W  View metadata report for BODC series reference number 604566
6045781996-08-03 09:29 75° 33' 36" N  0° 46' 48" E  View metadata report for BODC series reference number 604578