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RRS Discovery DY120

Cruise summary report

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Cruise Info. 
Ship name (ship code)RRS Discovery (74EQ)
Cruise identifierDY120
Cruise period2020-10-08 — 2020-10-24
StatusCompleted
Port of departureSouthampton, United Kingdom
Port of returnSouthampton, United Kingdom
PurposeResearch
ObjectivesThis cruise is a contribution to the international Overturning in the Subpolar North Atlantic Programme (OSNAP) and NC LTSS. This cruise is for mooring recovery and re-deployment in the Iceland Basin and Rockall Trough, funded through the NC LTSS, the UK-OSNAP-Ext proposal, and a UK-OSNAP follow-on proposal. The following moorings were recovered and redeployed: Iceland Basin, 3 moorings IB3, IB4, IB5 (OSNAP), Rockall Trough, 3 moorings (RTWB1, RTWB2, RTEB1) and the deployment of an ADCP lander (RHADCP1) (The Ellett Array) and a Darwin Mounds mooring. Calibration CTDs were conducted before and after each mooring deployment. A CTD section from the IB3 position to the Scottish continental shelf was also made.

The OSNAP array deployed since July 2014 is purposefully designed to provide a continuous record of the full-water column, trans-basin fluxes of heat, mass and freshwater in the subpolar North Atlantic, on a section from Newfoundland to Greenland to Scotland.
Chief scientistStuart A Cunningham (Scottish Association for Marine Science)
ProjectUK - Overturning in the Subpolar North Atlantic Programme (UK-OSNAP)
Cruise reportRRS Discovery DY120 cruise report dy120.pdf (19.30 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificIceland Basin; Irminger Basin
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 17
Description: Continuous underway measurements of temperature, salinity and conductivity
BathythermographQuantity: activity duration in days = 17
Description: Sea floor depth using an EA640, EM122 and EM710 echosounder
CTD stationsQuantity: number of stations = 10
Description: SeaBird 911 plus CTD.
Current profiler (eg ADCP)Quantity: number of stations = 10
Description: Sea water velocities using a RDI WH monitor 300 kHz lowered acoustic doppler current profiler (LADCP)
Other physical oceanographic measurementsQuantity: activity duration in days = 17
Description: Underway meteorological and sea surface measurements from the SurfMet System
Chemical oceanography 
OxygenQuantity: number of stations = 10
Description: Oxygen samples taken from CTD Niskin bottles
PhosphateQuantity: number of stations = 10
Description: Nutrient samples taken from CTD Niskin bottles
NitrateQuantity: number of stations = 10
Description: Nutrient samples taken from CTD Niskin bottles
SilicateQuantity: number of stations = 10
Description: Nutrient samples taken from CTD Niskin bottles
Other chemical oceanographic measurementsQuantity: number of stations = 10
Description: Carbon samples taken from CTD Niskin bottles
Other chemical oceanographic measurementsQuantity: number of stations = 10
Description: Salinity samples taken from CTD Niskin bottles
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 17
Description: Underway meteorological and sea surface measurements from the SurfMet System
Moorings, landers, buoys 
Physical oceanography 
Current meters58° 0' 46" N  23° 34' 27" W — NC LTSS Ellett Array mooring IB3 deployed at 12:16 on 20/10/20
Current meters57° 28' 9" N  11° 41' 11" W — UK OSNAP mooring WB2 recovery at 10:54 on 14/10/20
Current meters57° 48' 4" N  18° 49' 43" W — NC LTSS Ellett Array mooring IB5 deployed at 17:51 on 16/10/20
Current meters57° 5' 58" N  8° 26' 12" W — UK OSNAP mooring EB1 recovery at on 10:25 12/10/20
Current meters59° 51' 40" N  6° 57' 20" W — NC LTSS Darwin Mounds Mooring 1 deployed at 10:25 on 23/10/20
Current meters57° 5' 55" N  8° 26' 25" W — UK OSNAP mooring EB1 deployed at 18:07 on 12/10/20
Current meters57° 59' 23" N  20° 51' 13" W — NC LTSS Ellett Array mooring IB4 deployed at 12:43 on 18/10/20
Current meters57° 28' 10" N  11° 17' 49" W — UK OSNAP mooring WB1 deployed at 16:00 on 15/10/20
Current meters57° 59' 18" N  21° 8' 46" W — NC LTSS Ellett Array mooring IB4 recovered at 12:03 on 17/10/20
Current meters57° 28' 17" N  11° 41' 8" W — UK OSNAP mooring WB2 deployed at 16:55 on 14/10/20
Current meters57° 59' 24" N  23° 38' 48" W — NC LTSS Ellett Array mooring IB3 recovered at 04:10 on 19/10/20
Current meters59° 51' 40" N  6° 57' 58" W — NC LTSS Darwin Mounds Mooring 1 recovered at 22:40 on 22/10/20
Current meters57° 28' 18" N  11° 17' 0" W — UK OSNAP mooring WB1 recovery at 07:01 on 19/10/20
Current meters57° 48' 32" N  18° 49' 45" W — NC LTSS Ellett Array mooring IB5 recovered at 10:36 on 16/10/20
Current profiler (eg ADCP)57° 36' 53" N  14° 35' 20" W — UK OSNAP mooring RHADCP1 deployed at 19:21 on 15/10/20
Current profiler (eg ADCP)57° 48' 4" N  18° 49' 43" W — NC LTSS Ellett Array mooring IB5 deployed at 17:51 on 16/10/20
Current profiler (eg ADCP)59° 51' 40" N  6° 57' 58" W — NC LTSS Darwin Mounds Mooring 1 recovered at 22:40 on 22/10/20
Current profiler (eg ADCP)59° 51' 40" N  6° 57' 20" W — NC LTSS Darwin Mounds Mooring 1 deployed at 10:25 on 23/10/20
Current profiler (eg ADCP)57° 48' 32" N  18° 49' 45" W — NC LTSS Ellett Array mooring IB5 recovered at 10:36 on 16/10/20
Current profiler (eg ADCP)57° 59' 18" N  21° 8' 46" W — NC LTSS Ellett Array mooring IB4 recovered at 12:03 on 17/10/20
Current profiler (eg ADCP)57° 59' 24" N  23° 38' 48" W — NC LTSS Ellett Array mooring IB3 recovered at 04:10 on 19/10/20
Current profiler (eg ADCP)57° 59' 23" N  20° 51' 13" W — NC LTSS Ellett Array mooring IB4 deployed at 12:43 on 18/10/20
Current profiler (eg ADCP)58° 0' 46" N  23° 34' 27" W — NC LTSS Ellett Array mooring IB3 deployed at 12:16 on 20/10/20
Other physical oceanographic measurements59° 51' 40" N  6° 57' 20" W — NC LTSS Darwin Mounds Mooring 1 deployed at 10:25 on 23/10/20
Other physical oceanographic measurements57° 28' 9" N  11° 41' 11" W — UK OSNAP mooring WB2 recovery at 10:54 on 14/10/20
Other physical oceanographic measurements57° 28' 10" N  11° 17' 49" W — UK OSNAP mooring WB1 deployed at 16:00 on 15/10/20
Other physical oceanographic measurements57° 59' 24" N  23° 38' 48" W — NC LTSS Ellett Array mooring IB3 recovered at 04:10 on 19/10/20
Other physical oceanographic measurements57° 48' 4" N  18° 49' 43" W — NC LTSS Ellett Array mooring IB5 deployed at 17:51 on 16/10/20
Other physical oceanographic measurements57° 59' 18" N  21° 8' 46" W — NC LTSS Ellett Array mooring IB4 recovered at 12:03 on 17/10/20
Other physical oceanographic measurements57° 5' 55" N  8° 26' 25" W — UK OSNAP mooring EB1 deployed at 18:07 on 12/10/20
Other physical oceanographic measurements57° 5' 58" N  8° 26' 12" W — UK OSNAP mooring EB1 recovery at on 10:25 12/10/20
Other physical oceanographic measurements57° 48' 32" N  18° 49' 45" W — NC LTSS Ellett Array mooring IB5 recovered at 10:36 on 16/10/20
Other physical oceanographic measurements57° 28' 17" N  11° 41' 8" W — UK OSNAP mooring WB2 deployed at 16:55 on 14/10/20
Other physical oceanographic measurements57° 59' 23" N  20° 51' 13" W — NC LTSS Ellett Array mooring IB4 deployed at 12:43 on 18/10/20
Other physical oceanographic measurements59° 51' 40" N  6° 57' 58" W — NC LTSS Darwin Mounds Mooring 1 recovered at 22:40 on 22/10/20
Other physical oceanographic measurements57° 28' 18" N  11° 17' 0" W — UK OSNAP mooring WB1 recovery at 07:01 on 19/10/20
Other physical oceanographic measurements58° 0' 46" N  23° 34' 27" W — NC LTSS Ellett Array mooring IB3 deployed at 12:16 on 20/10/20
Biology and fisheries 
Sediment traps59° 51' 40" N  6° 57' 20" W — NC LTSS Darwin Mounds Mooring 1 deployed at 10:25 on 23/10/20
Sediment traps59° 51' 40" N  6° 57' 58" W — NC LTSS Darwin Mounds Mooring 1 recovered at 22:40 on 22/10/20
Data held at BODC Get data
Series/Profiles 
8  Acoustic current meter
Moored instrument depth
Reference numbers
Raw current meter output parameters
Date and time
Temperature of the water column
Engineering parameters
Platform or instrument orientation
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
[Show series]
Moored instrument depth
Reference numbers
Raw current meter output parameters
Date and time
Temperature of the water column
Engineering parameters
Platform or instrument orientation
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
[Hide series]

BODC idDate/TimeLocationDoc.
22073462020-10-12 20:00  — 2022-07-15 10:00 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2207346
22072662020-10-14 18:00  — 2022-07-17 10:00 57° 28' 17" N  12° 18' 51" W  View metadata report for BODC series reference number 2207266
22073222020-10-12 20:00  — 2022-07-15 10:00 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2207322
22073092020-10-12 20:00  — 2022-07-15 10:00 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2207309
22073102020-10-12 20:00  — 2022-07-15 10:00 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2207310
22072782020-10-14 18:00  — 2022-07-17 10:00 57° 28' 17" N  12° 18' 51" W  View metadata report for BODC series reference number 2207278
22072912020-10-14 18:00  — 2022-07-17 10:00 57° 28' 17" N  12° 18' 51" W  View metadata report for BODC series reference number 2207291
22073342020-10-12 20:00  — 2022-07-15 10:00 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2207334
3  Acoustic doppler current profiler
Moored instrument depth
Reference numbers
Date and time
Temperature of the water column
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Metadata parameters
Acoustic backscatter in the water column
[Show series]
Moored instrument depth
Reference numbers
Date and time
Temperature of the water column
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Metadata parameters
Acoustic backscatter in the water column
[Hide series]

BODC idDate/TimeLocationDoc.
22288362021-01-01 00:00  — 2021-12-31 23:57 59° 51' 40" N  7° 2' 39" W  View metadata report for BODC series reference number 2228836
22288242020-10-23 09:39  — 2020-12-31 23:57 59° 51' 40" N  7° 2' 39" W  View metadata report for BODC series reference number 2228824
22288482022-01-01 00:00  — 2022-07-18 20:30 59° 51' 40" N  7° 2' 39" W  View metadata report for BODC series reference number 2228848
5  Bottle station
Total dissolved inorganic carbon (TCO2) concentration in the water column
Reference numbers
Vertical spatial coordinates
Quality control flags
Alkalinity, acidity and pH of the water column
[Show series]
Total dissolved inorganic carbon (TCO2) concentration in the water column
Reference numbers
Vertical spatial coordinates
Quality control flags
Alkalinity, acidity and pH of the water column
[Hide series]

BODC idDate/TimeLocationDoc.
22479382020-10-11 19:39 57° 17' 52" N  10° 23' 8" W  View metadata report for BODC series reference number 2247938
22479512020-10-12 06:59 57° 5' 14" N  9° 32' 33" W  View metadata report for BODC series reference number 2247951
22479752020-10-17 08:02 57° 58' 59" N  21° 9' 30" W  View metadata report for BODC series reference number 2247975
22479632020-10-13 09:57 57° 28' 51" N  11° 32' 7" W  View metadata report for BODC series reference number 2247963
22479872020-10-20 14:23 57° 59' 34" N  24° 23' 13" W  View metadata report for BODC series reference number 2247987
25  Moored CTD
Moored instrument depth
Reference numbers
Date and time
Temperature of the water column
Electrical conductivity of the water column
[Show series]
Moored instrument depth
Reference numbers
Date and time
Temperature of the water column
Electrical conductivity of the water column
[Hide series]

BODC idDate/TimeLocationDoc.
22067482020-10-23 11:00:01  — 2022-07-27 06:30:01 59° 51' 40" N  7° 2' 39" W  View metadata report for BODC series reference number 2206748
22113212020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211321
22113332020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211333
22113702020-10-12 20:01:17  — 2022-07-15 09:46:20 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211370
22113942020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211394
22066812020-10-14 18:00:01  — 2022-07-17 06:30:01 57° 28' 17" N  12° 18' 51" W  View metadata report for BODC series reference number 2206681
22113082020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211308
22114012020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211401
22066932020-10-14 18:00:01  — 2022-07-17 06:30:01 57° 28' 17" N  12° 18' 51" W  View metadata report for BODC series reference number 2206693
22253892020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225389
22254452020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225445
22113452020-10-12 20:01:05  — 2022-07-15 10:01:06 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211345
22114252020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211425
22253902020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225390
22113822020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211382
22114132020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211413
22254082020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225408
22067002020-10-14 18:00:01  — 2022-07-17 06:30:01 57° 28' 17" N  12° 18' 51" W  View metadata report for BODC series reference number 2206700
22253772020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225377
22254212020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225421
22254332020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225433
22254572020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225457
22113572020-10-12 20:00:01  — 2022-07-15 10:00:01 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211357
22113692020-10-12 20:01:10  — 2022-07-15 10:01:12 57° 5' 55" N  9° 33' 34" W  View metadata report for BODC series reference number 2211369
22253652020-10-15 10:30:01  — 2022-07-18 11:30:01 57° 28' 10" N  12° 42' 10" W  View metadata report for BODC series reference number 2225365
Discrete samples 
10  CTD frame plus rosette sampler
7  Instrument mooring

 

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