Cruise inventory

RRS Discovery D181

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD181
Cruise period1989-04-01 — 1989-05-03
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
Objectives1. Quantify the circulation of the Biscay region northeast of 41N, 30W with a box of full depth CTD casts at about 75km intervals along the sections. Sampling will include nutrients (nitrates, phosphates and silicates), chlorophyll 'a' and bacterial counts. Vertical net samples will also be taken during selected CTDs for BOFS.
2. Conduct SeaSoar trials to test various modifications to the fairing, fish and depressor, designed to improve its performance and increase its maximum depth and duration of tow; also to test improved editing and display software.
3. Run SeaSoar sections within the CTD survey box to quantify variations of the T/S characteristics of newly ventilated winter Mode water.
4. Run a SeaSoar section from 47N to 60N along the BOFs line at 20W to examine the latitudinal variation of mixed layer depth, the horizontal statistics of eddy and frontal activity, and the variability of upper ocean properties (temperature, salinity, oxygen and chlorophyll 'a').
5. Continuously sample surface parameters to examine the spatial (and temporal) variability of temperature, salinity and fluorescence.
6. Deploy and recover a short term mooring (4 weeks) to observe internal tidal wave propagation off the Celtic shelf.
7. Deploy a two year trial mooring close to 6.
8. Recover two moorings from the shelf edge off the north coast of Spain.
9. Deploy sediment traps at 47N, 20W for BOFS.
Chief scientistRaymond T Pollard (Institute of Oceanographic Sciences Deacon Laboratory)
ProjectBOFS
Cruise reportRRS Discovery D181 cruise report d181.pdf — access key 'C' (1.16 MB) 
Ocean/sea areas 
GeneralBay of Biscay
North East Atlantic Ocean (limit 40W)
SpecificBay of Biscay - 20øW
Track chartsRRS Discovery D181 cruise track — trk3489.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)
BathythermographQuantity: number of profiles = 31
CTD stationsQuantity: number of stations = 58
Subsurface temperature and salinity measurementsQuantity: track kilometres = 3111.36
Description: Seasoar
Current metersQuantity: number of deployments = 3
Description: 23 (211d)
Current profiler (eg ADCP)Description: ADCP
Surface drifters/drifting buoysQuantity: number of deployments = 4
Description: Argos Buoys
Chemical oceanography 
Oxygen
Nitrate
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)
Particulate organic matter (inc POC, PON)Description: POC & PON
PhytoplanktonDescription: Lugols
ZooplanktonDescription: WP2 nets,formalin
SestonQuantity: number of hauls = 7
Description: apstein nets
Meteorology 
Incident radiationDescription: 2 minute samples
Other meteorological measurementsDescription: hourly wind speed and direction
Data held at BODC 
Series/Profiles 
12  CTD in towed or autonomous underwater vehicle

BODC idDate/TimeLocationDoc.
3654891989-04-09 10:09 42° 5' 33" N  11° 13' 34" W  View metadata report for BODC series reference number 365489
3654901989-04-10 14:44 41° 50' 56" N  14° 48' 17" W  View metadata report for BODC series reference number 365490
3655081989-04-13 14:50 41° 31' 49" N  20° 19' 21" W  View metadata report for BODC series reference number 365508
3655211989-04-14 13:57 43° 26' 6" N  20° 9' 58" W  View metadata report for BODC series reference number 365521
3655331989-04-16 11:04 45° 58' 27" N  19° 52' 43" W  View metadata report for BODC series reference number 365533
3655451989-04-23 05:14 51° 55' 53" N  17° 9' 35" W  View metadata report for BODC series reference number 365545
3655571989-05-01 23:43 47° 23' 5" N  6° 45' 56" W  View metadata report for BODC series reference number 365557
3655691989-04-28 21:20 43° 3' 36" N  10° 58' 43" W  View metadata report for BODC series reference number 365569
3655701989-04-27 09:00 47° 35' 14" N  13° 18' 3" W  View metadata report for BODC series reference number 365570
3655821989-04-25 21:00 43° 58' 41" N  16° 57' 56" W  View metadata report for BODC series reference number 365582
3655941989-04-24 02:09 49° 53' 3" N  17° 4' 6" W  View metadata report for BODC series reference number 365594
3656011989-04-19 20:45 51° 58' 7" N  19° 28' 38" W  View metadata report for BODC series reference number 365601
58  CTD/STD cast
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Reference numbers
Dissolved oxygen parameters in the water column
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Reference numbers
Dissolved oxygen parameters in the water column

BODC idDate/TimeLocationDoc.
2915021989-04-08 14:13  — 1989-04-08 14:28 43° 15' 29" N  9° 26' 59" W  View metadata report for BODC series reference number 291502
2915141989-04-08 14:59  — 1989-04-08 15:30 43° 15' 13" N  9° 29' 39" W  View metadata report for BODC series reference number 291514
2915261989-04-08 20:50  — 1989-04-08 21:28 42° 13' 11" N  9° 40' 56" W  View metadata report for BODC series reference number 291526
2915381989-04-09 01:44  — 1989-04-09 02:28 42° 9' 10" N  10° 19' 54" W  View metadata report for BODC series reference number 291538
2915511989-04-09 08:18  — 1989-04-09 08:57 42° 5' 46" N  11° 13' 33" W  View metadata report for BODC series reference number 291551
2915631989-04-09 15:27  — 1989-04-09 16:28 42° 2' 1" N  12° 7' 41" W  View metadata report for BODC series reference number 291563
2915751989-04-09 21:59 41° 57' 39" N  12° 59' 53" W  View metadata report for BODC series reference number 291575
2915871989-04-10 05:40  — 1989-04-10 06:34 41° 54' 25" N  13° 55' 30" W  View metadata report for BODC series reference number 291587
2915991989-04-10 12:07  — 1989-04-10 13:03 41° 51' 2" N  14° 47' 3" W  View metadata report for BODC series reference number 291599
2916061989-04-10 20:07  — 1989-04-10 21:03 41° 47' 29" N  15° 40' 31" W  View metadata report for BODC series reference number 291606
2916181989-04-11 04:23  — 1989-04-11 05:23 41° 43' 36" N  16° 33' 43" W  View metadata report for BODC series reference number 291618
2916311989-04-11 13:55  — 1989-04-11 14:47 41° 40' 11" N  17° 27' 38" W  View metadata report for BODC series reference number 291631
2916431989-04-12 11:42  — 1989-04-12 13:09 41° 39' 44" N  18° 24' 18" W  View metadata report for BODC series reference number 291643
2916551989-04-13 03:36  — 1989-04-13 04:30 41° 34' 22" N  19° 13' 59" W  View metadata report for BODC series reference number 291655
2916671989-04-13 12:16  — 1989-04-13 13:07 41° 32' 19" N  20° 19' 12" W  View metadata report for BODC series reference number 291667
2913301989-04-02 10:21  — 1989-04-02 11:08 49° 11' 34" N  6° 14' 35" W  View metadata report for BODC series reference number 291330
2916791989-04-13 21:06  — 1989-04-13 21:58 42° 10' 19" N  20° 17' 46" W  View metadata report for BODC series reference number 291679
2916801989-04-14 04:14  — 1989-04-14 04:57 42° 48' 25" N  20° 13' 47" W  View metadata report for BODC series reference number 291680
2916921989-04-14 10:54  — 1989-04-14 11:51 43° 26' 28" N  20° 8' 53" W  View metadata report for BODC series reference number 291692
2917111989-04-14 20:24  — 1989-04-14 21:15 44° 4' 0" N  20° 2' 52" W  View metadata report for BODC series reference number 291711
2917231989-04-15 15:49  — 1989-04-15 16:42 44° 43' 9" N  19° 59' 25" W  View metadata report for BODC series reference number 291723
2917351989-04-16 00:10  — 1989-04-16 01:15 45° 19' 40" N  19° 57' 2" W  View metadata report for BODC series reference number 291735
2917471989-04-16 08:30  — 1989-04-16 09:22 45° 58' 34" N  19° 52' 58" W  View metadata report for BODC series reference number 291747
2917591989-04-16 17:11  — 1989-04-16 18:03 46° 35' 41" N  19° 46' 38" W  View metadata report for BODC series reference number 291759
2917601989-04-16 23:24  — 1989-04-17 00:17 47° 13' 57" N  19° 41' 57" W  View metadata report for BODC series reference number 291760
2917721989-04-17 18:04  — 1989-04-17 18:27 47° 57' 57" N  19° 32' 33" W  View metadata report for BODC series reference number 291772
2917841989-04-17 21:09  — 1989-04-17 22:11 48° 2' 38" N  19° 33' 35" W  View metadata report for BODC series reference number 291784
2917961989-04-18 06:48  — 1989-04-18 07:41 48° 39' 23" N  19° 31' 27" W  View metadata report for BODC series reference number 291796
2918031989-04-18 13:31  — 1989-04-18 14:24 49° 20' 7" N  19° 32' 17" W  View metadata report for BODC series reference number 291803
2918151989-04-18 20:49  — 1989-04-18 21:47 50° 1' 7" N  19° 35' 1" W  View metadata report for BODC series reference number 291815
2918271989-04-19 03:20  — 1989-04-19 04:14 50° 40' 46" N  19° 37' 3" W  View metadata report for BODC series reference number 291827
2918391989-04-19 09:34  — 1989-04-19 10:32 51° 20' 1" N  19° 33' 41" W  View metadata report for BODC series reference number 291839
2918401989-04-19 15:56  — 1989-04-19 16:49 51° 59' 24" N  19° 33' 17" W  View metadata report for BODC series reference number 291840
2918521989-04-20 09:31  — 1989-04-20 10:12 52° 39' 12" N  19° 36' 2" W  View metadata report for BODC series reference number 291852
2918641989-04-20 18:42  — 1989-04-20 19:20 53° 20' 2" N  19° 34' 26" W  View metadata report for BODC series reference number 291864
2918761989-04-21 04:36  — 1989-04-21 05:00 54° 0' 7" N  19° 36' 2" W  View metadata report for BODC series reference number 291876
2918881989-04-21 10:24  — 1989-04-21 11:01 53° 48' 38" N  18° 30' 33" W  View metadata report for BODC series reference number 291888
2919071989-04-21 16:37  — 1989-04-21 17:13 53° 36' 20" N  17° 25' 25" W  View metadata report for BODC series reference number 291907
2919191989-04-21 22:19  — 1989-04-21 23:03 53° 24' 57" N  16° 21' 37" W  View metadata report for BODC series reference number 291919
2919201989-04-22 05:00  — 1989-04-22 05:55 52° 42' 31" N  16° 9' 38" W  View metadata report for BODC series reference number 291920
2919321989-04-22 11:57  — 1989-04-22 12:45 52° 0' 4" N  16° 1' 14" W  View metadata report for BODC series reference number 291932
2919441989-04-22 18:30  — 1989-04-22 19:21 52° 0' 44" N  17° 11' 15" W  View metadata report for BODC series reference number 291944
2919561989-04-30 18:18  — 1989-04-30 19:09 47° 17' 59" N  6° 42' 0" W  View metadata report for BODC series reference number 291956
2919681989-05-01 01:32  — 1989-05-01 02:25 46° 43' 58" N  6° 47' 59" W  View metadata report for BODC series reference number 291968
2913421989-04-03 01:28  — 1989-04-03 02:20 47° 27' 46" N  6° 37' 12" W  View metadata report for BODC series reference number 291342
2913541989-04-03 04:04  — 1989-04-03 06:57 47° 17' 5" N  6° 39' 47" W  View metadata report for BODC series reference number 291354
2913661989-04-03 08:30  — 1989-04-03 11:29 47° 17' 15" N  6° 40' 18" W  View metadata report for BODC series reference number 291366
2913781989-04-04 09:06  — 1989-04-04 10:40 46° 42' 18" N  6° 58' 9" W  View metadata report for BODC series reference number 291378
2913911989-04-05 05:31  — 1989-04-05 06:32 46° 17' 29" N  7° 1' 54" W  View metadata report for BODC series reference number 291391
2914091989-04-05 12:45  — 1989-04-05 13:53 45° 33' 19" N  7° 0' 10" W  View metadata report for BODC series reference number 291409
2914101989-04-05 18:57  — 1989-04-05 19:46 45° 4' 7" N  7° 0' 20" W  View metadata report for BODC series reference number 291410
2914221989-04-06 05:43  — 1989-04-06 06:32 44° 29' 19" N  7° 1' 59" W  View metadata report for BODC series reference number 291422
2914341989-04-06 19:05  — 1989-04-06 19:21 44° 0' 33" N  6° 57' 48" W  View metadata report for BODC series reference number 291434
2914461989-04-06 19:44  — 1989-04-06 20:23 44° 1' 54" N  6° 58' 18" W  View metadata report for BODC series reference number 291446
2914581989-04-06 22:11  — 1989-04-06 23:01 44° 13' 42" N  6° 58' 57" W  View metadata report for BODC series reference number 291458
2914711989-04-07 10:52  — 1989-04-07 11:40 44° 29' 31" N  9° 0' 0" W  View metadata report for BODC series reference number 291471
2914831989-04-07 22:05  — 1989-04-07 22:14 43° 5' 14" N  9° 59' 45" W  View metadata report for BODC series reference number 291483
2914951989-04-08 12:10  — 1989-04-08 12:22 42° 15' 45" N  9° 13' 28" W  View metadata report for BODC series reference number 291495
Discrete samples 
1  Instrument mooringSedimentation flux of carbon, nitrogen or organic matter in the water column
Carbon concentrations in suspended particulate material
Radioactivity in the water column
Concentration of silicon species in suspended particulate material
Sedimentation flux of non-metallic inorganic species in the water column
Sedimentation flux of metallic and metalloid elements and isotopes in water bodies
Nitrogen concentrations in suspended particulate material
Sedimentation flux quantification in the water column