Cruise inventory

RRS Charles Darwin CD176

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD176
Cruise period2005-10-06 — 2005-11-01
StatusCompleted
Port of departureBirkenhead, United Kingdom
Port of returnFalmouth, United Kingdom
PurposeResearch
ObjectivesThe principle objective of the cruise was to undertake the sampling of the Extended Ellett Line a section of CTD and biochemical monitoring stations that run from Ardnamurchan Point in Scotland to Rockall and on to Iceland, ending close to the volcanic island of Surtsey. Secondary objectives included making trace metal observations with a view to i) an investigation of circulation in the Rockall Trough and ii) researching the limiting role of iron in biological production in the Iceland Basin, investigating cetacean distributions and undertaking coring activities. In addition the cruise provided training and data for 5 PhD students on board and one, Clare Johnson, who was unable to join the ship. The Ellett Line is a vitally important section that provides data to monitor the state of the North Atlantic. In all 66 oceanic CTD stations were occupied. Although a significant amount of downtime was encountered - mainly due to bad weather - the cruise was nevertheless very successful. It completed the section from Scotland to Rockall, an ADCP mooring was laid in the gully leading away from the Wyville Thomson Ridge (the Ellett gully) which was mapped in detail; iron incubation measurements were made with water from the Iceland Basin; a large number of sperm whales and dolphins were heard in the Rockall Trough; the presence of acorn worms in the muds at the bottom of the Faroe-Shetland Channel was confirmed. In addition nearly all the CTD and underway sensors performed satisfactorily, and in particular the oxygen sensor on the stainless steel CTD performed very well. After much work on a neglected system on board the Charles Darwin the vessel mounted ADCP gave good data. And on the final leg home we carried out a very detailed survey of the water quality just above the Migulay cold water coral reef. Given the potential for bad weather as this time of year a large amount work was achieved. No group achieved all its objectives, but neither did any one come away empty handed
Chief scientistToby J Sherwin (Scottish Association for Marine Science)
ProjectNorthern Seas Programme
Coordinating bodySAMS/NOCS
Cruise reportRRS Charles Darwin CD176 cruise report cd176.pdf — access key 'C' (2.81 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
North East Atlantic Ocean (limit 40W)
SpecificMalin Shelf; Rockall Trough; Rockall Bank; Iceland Basin, Wyville Thomson Ridge, Faroe-Shetland Channel
Track chartsRRS Charles Darwin CD176 cruise track — cd176trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 3148.4
Description: Continuous underway Sea Temp, Salinity, ADCP, Tranmissometer, Fluorometer
CTD stationsQuantity: number of stations = 66
Description: Continuous profiles of pressure, temperature, conductivity, LADCP (up and down), fluorometer, dissolved oxygen, transmissometer
Chemical oceanography 
OxygenQuantity: number of samples = 600
Description: Oxygen profiles
PhosphateQuantity: number of samples = 400
Description: Phosphate profiles
PhosphateQuantity: number of samples = 153
Description: Underway phosphate
NitrateQuantity: number of samples = 153
Description: Underway nitrate
NitrateQuantity: number of samples = 400
Description: Combined NO2, NO3 profiles
NitriteQuantity: number of samples = 100
Description: Near surface nitrite profiles
AmmoniaQuantity: number of samples = 400
Description: Ammonium profiles
SilicateQuantity: number of samples = 400
Description: Silicate profiles
SilicateQuantity: number of samples = 153
Description: Underway silicate
pHQuantity: number of samples = 400
Description: pH profiles
Other chemical oceanographic measurementsQuantity: number of samples = 16
Description: Dissolved iron profiles (Iceland Basin only)
Other chemical oceanographic measurementsQuantity: number of samples = 153
Description: Underway surface dissolved iron samples
Other chemical oceanographic measurementsQuantity: number of samples = 300
Description: Dissolved and particulate aluminium profiles (E of 15 W only)
Biology and fisheries 
Particulate organic matter (inc POC, PON)Quantity: number of samples = 400
Description: POC profiles
Mammals and reptilesQuantity: number of deployments = 27
Description: Hydrophones deployed at some CTD stations to detect baleen whales (not in Icelandic waters)
Mammals and reptilesQuantity: track kilometres = 1500
Description: Acoustic monitoring for sperm whales and dolphins (not in Icelandic waters)
Other biological/fisheries measurementQuantity: number of experiments = 2
Description: Bioassay incubations involving dissolved Fe, nutrients, Chl A, HPLC, POC, PON, Lugols, FRRF (phytoplankton physiology). Iceland Basin and Rockall Trough
Meteorology 
Routine standard measurementsQuantity: track kilometres = 3148.4
Description: Continuous underway Air temp, atmospheric pressure, port and starboard PAR, port and starboard TIR, wind speed and direction
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 7
Description: Megacore (either side of Wyville Thomson Ridge)
Core - soft bottomQuantity: number of cores = 3
Description: Box core (Faroe-Shetland Channel)
Multi-beam echosoundingQuantity: number of surveys = 4
Description: Swath bathymetry - parts of: Wyville Thomson Ridge, Hatton Bank, Rockall Bank, George Bligh Bank
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)60° 14' 21" N  8° 52' 11" W — 1 Broadband ADCP 16 Oct 2005 (Ellett gully ADCP)
Neutrally buoyant floats61° 15' 42" N  20° 0' 47" W — 1 Argo float 19 Oct 2005
Data held at BODC 
Series/Profiles 
1  Acoustic doppler current profiler
Platform or instrument orientation
Acoustic backscatter in the water column
Sea level
Vertical velocity of the water column (currents)
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Temperature of the water column
Reference numbers
Date and time
Platform or instrument orientation
Acoustic backscatter in the water column
Sea level
Vertical velocity of the water column (currents)
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Temperature of the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
10144592005-10-16 15:30  — 2006-05-06 02:00 60° 14' 21" N  8° 52' 11" W  View metadata report for BODC series reference number 1014459
45  Bottle station
Quality control flags
Ammonium and ammonia concentration parameters in water bodies
Metadata parameters
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Ammonium and ammonia concentration parameters in water bodies
Metadata parameters
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column

BODC idDate/TimeLocationDoc.
13507892005-10-08 03:35 56° 59' 54" N  8° 59' 59" W  View metadata report for BODC series reference number 1350789
13507902005-10-08 06:04 57° 3' 16" N  9° 12' 26" W  View metadata report for BODC series reference number 1350790
13508082005-10-08 10:07 57° 6' 1" N  9° 24' 51" W  View metadata report for BODC series reference number 1350808
13508212005-10-10 13:57 57° 9' 15" N  9° 42' 11" W  View metadata report for BODC series reference number 1350821
13508332005-10-10 18:44 57° 13' 52" N  10° 2' 53" W  View metadata report for BODC series reference number 1350833
13508452005-10-10 23:59 57° 18' 9" N  10° 22' 52" W  View metadata report for BODC series reference number 1350845
13508572005-10-11 04:20 57° 22' 1" N  10° 40' 5" W  View metadata report for BODC series reference number 1350857
13508692005-10-11 08:21 57° 24' 1" N  10° 51' 50" W  View metadata report for BODC series reference number 1350869
13508702005-10-11 10:40 57° 26' 59" N  11° 4' 54" W  View metadata report for BODC series reference number 1350870
13508822005-10-11 15:16 57° 28' 1" N  11° 19' 9" W  View metadata report for BODC series reference number 1350882
13508942005-10-11 17:50 57° 28' 59" N  11° 31' 58" W  View metadata report for BODC series reference number 1350894
13509012005-10-11 22:19 57° 29' 29" N  11° 51' 0" W  View metadata report for BODC series reference number 1350901
13509132005-10-12 02:15 57° 30' 32" N  12° 15' 0" W  View metadata report for BODC series reference number 1350913
13509252005-10-12 05:40 57° 31' 55" N  12° 37' 14" W  View metadata report for BODC series reference number 1350925
13509372005-10-12 09:02 57° 32' 14" N  12° 44' 51" W  View metadata report for BODC series reference number 1350937
13509492005-10-12 11:52 57° 32' 31" N  12° 51' 58" W  View metadata report for BODC series reference number 1350949
13509502005-10-12 16:06 57° 35' 2" N  13° 37' 59" W  View metadata report for BODC series reference number 1350950
13509622005-10-12 18:42 57° 34' 2" N  13° 19' 58" W  View metadata report for BODC series reference number 1350962
13509742005-10-12 20:39 57° 32' 57" N  12° 59' 50" W  View metadata report for BODC series reference number 1350974
13509862005-10-14 12:02 60° 12' 47" N  6° 12' 10" W  View metadata report for BODC series reference number 1350986
13509982005-10-16 08:46 60° 14' 58" N  9° 0' 26" W  View metadata report for BODC series reference number 1350998
13510012005-10-16 21:49 60° 25' 34" N  8° 14' 37" W  View metadata report for BODC series reference number 1351001
13510132005-10-18 12:42 63° 12' 58" N  20° 3' 52" W  View metadata report for BODC series reference number 1351013
13510252005-10-18 14:23 63° 18' 59" N  20° 12' 10" W  View metadata report for BODC series reference number 1351025
13510372005-10-18 16:59 63° 8' 28" N  19° 54' 31" W  View metadata report for BODC series reference number 1351037
13510492005-10-18 20:27 62° 54' 57" N  19° 32' 39" W  View metadata report for BODC series reference number 1351049
13510502005-10-19 00:10 62° 40' 5" N  19° 40' 20" W  View metadata report for BODC series reference number 1351050
13510622005-10-19 04:37 62° 20' 1" N  19° 49' 53" W  View metadata report for BODC series reference number 1351062
13510742005-10-19 08:59 61° 59' 57" N  20° 0' 11" W  View metadata report for BODC series reference number 1351074
13510862005-10-19 14:48 61° 29' 59" N  19° 59' 59" W  View metadata report for BODC series reference number 1351086
13511172005-10-23 13:17 58° 58' 34" N  13° 27' 13" W  View metadata report for BODC series reference number 1351117
13511292005-10-23 15:20 58° 58' 42" N  13° 23' 2" W  View metadata report for BODC series reference number 1351129
13511302005-10-23 17:42 58° 58' 59" N  13° 11' 59" W  View metadata report for BODC series reference number 1351130
13511422005-10-25 09:34 56° 54' 58" N  8° 38' 19" W  View metadata report for BODC series reference number 1351142
13511542005-10-25 11:32 56° 50' 9" N  8° 20' 2" W  View metadata report for BODC series reference number 1351154
13511662005-10-25 13:54 56° 46' 53" N  8° 0' 4" W  View metadata report for BODC series reference number 1351166
13511782005-10-25 16:12 56° 44' 5" N  7° 40' 27" W  View metadata report for BODC series reference number 1351178
13511912005-10-25 23:02 56° 44' 2" N  7° 19' 53" W  View metadata report for BODC series reference number 1351191
13512092005-10-26 02:13 56° 43' 59" N  6° 59' 57" W  View metadata report for BODC series reference number 1351209
13512102005-10-26 04:55 56° 44' 3" N  6° 35' 52" W  View metadata report for BODC series reference number 1351210
13512222005-10-26 07:17 56° 42' 30" N  6° 22' 0" W  View metadata report for BODC series reference number 1351222
13512342005-10-26 08:12 56° 41' 4" N  6° 16' 53" W  View metadata report for BODC series reference number 1351234
13512462005-10-26 09:39 56° 40' 1" N  6° 8' 3" W  View metadata report for BODC series reference number 1351246
13510982005-10-19 19:00 61° 15' 8" N  20° 0' 15" W  View metadata report for BODC series reference number 1351098
13511052005-10-23 11:20 58° 58' 16" N  13° 34' 55" W  View metadata report for BODC series reference number 1351105
65  CTD/STD cast
Transmittance and attenuance of the water column
Chlorophyll pigment concentrations in water bodies
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
Chlorophyll pigment concentrations in water bodies
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.
8963892005-10-07 09:58  — 2005-10-07 10:03 55° 22' 13" N  6° 42' 55" W  View metadata report for BODC series reference number 896389
8963902005-10-08 03:26  — 2005-10-08 03:32 56° 59' 54" N  8° 59' 59" W  View metadata report for BODC series reference number 896390
8964082005-10-08 05:44  — 2005-10-08 05:58 57° 3' 13" N  9° 12' 38" W  View metadata report for BODC series reference number 896408
8964212005-10-08 08:09  — 2005-10-08 09:36 57° 6' 1" N  9° 24' 51" W  View metadata report for BODC series reference number 896421
8964332005-10-10 12:58  — 2005-10-10 13:43 57° 9' 15" N  9° 42' 11" W  View metadata report for BODC series reference number 896433
8964452005-10-10 17:24  — 2005-10-10 18:43 57° 13' 52" N  10° 2' 53" W  View metadata report for BODC series reference number 896445
8964572005-10-10 22:50  — 2005-10-10 23:41 57° 18' 9" N  10° 22' 52" W  View metadata report for BODC series reference number 896457
8964692005-10-11 03:08  — 2005-10-11 04:13 57° 22' 1" N  10° 40' 5" W  View metadata report for BODC series reference number 896469
8964702005-10-11 07:50  — 2005-10-11 08:16 57° 24' 1" N  10° 51' 50" W  View metadata report for BODC series reference number 896470
8964822005-10-11 10:12  — 2005-10-11 10:34 57° 26' 59" N  11° 4' 54" W  View metadata report for BODC series reference number 896482
8964942005-10-11 14:49  — 2005-10-11 15:07 57° 28' 1" N  11° 19' 9" W  View metadata report for BODC series reference number 896494
8965012005-10-11 16:53  — 2005-10-11 17:39 57° 28' 59" N  11° 31' 58" W  View metadata report for BODC series reference number 896501
8965132005-10-11 21:15  — 2005-10-11 22:07 57° 29' 29" N  11° 51' 0" W  View metadata report for BODC series reference number 896513
8965252005-10-12 01:17  — 2005-10-12 02:00 57° 30' 32" N  12° 15' 0" W  View metadata report for BODC series reference number 896525
8965372005-10-12 04:49  — 2005-10-12 05:26 57° 31' 55" N  12° 37' 14" W  View metadata report for BODC series reference number 896537
8965492005-10-12 08:08  — 2005-10-12 08:47 57° 32' 14" N  12° 44' 51" W  View metadata report for BODC series reference number 896549
8965502005-10-12 11:14  — 2005-10-12 11:41 57° 32' 31" N  12° 51' 58" W  View metadata report for BODC series reference number 896550
8965622005-10-12 15:55  — 2005-10-12 16:02 57° 35' 2" N  13° 37' 59" W  View metadata report for BODC series reference number 896562
8965742005-10-12 18:31  — 2005-10-12 18:38 57° 34' 2" N  13° 19' 58" W  View metadata report for BODC series reference number 896574
8965862005-10-12 20:23  — 2005-10-12 20:36 57° 32' 57" N  12° 59' 50" W  View metadata report for BODC series reference number 896586
8965982005-10-14 09:31  — 2005-10-14 10:05 60° 12' 57" N  6° 11' 54" W  View metadata report for BODC series reference number 896598
8966052005-10-14 11:20  — 2005-10-14 11:55 60° 12' 47" N  6° 12' 10" W  View metadata report for BODC series reference number 896605
8966172005-10-14 13:53  — 2005-10-14 14:12 60° 17' 57" N  6° 6' 48" W  View metadata report for BODC series reference number 896617
8966292005-10-14 23:59  — 2005-10-15 00:29 60° 4' 49" N  6° 19' 16" W  View metadata report for BODC series reference number 896629
8966302005-10-15 02:04  — 2005-10-15 02:29 60° 0' 51" N  6° 20' 53" W  View metadata report for BODC series reference number 896630
8966422005-10-15 23:45  — 2005-10-16 00:02 60° 20' 22" N  9° 2' 27" W  View metadata report for BODC series reference number 896642
8966542005-10-16 01:45  — 2005-10-16 02:14 60° 17' 21" N  9° 1' 47" W  View metadata report for BODC series reference number 896654
8966662005-10-16 03:38  — 2005-10-16 04:16 60° 16' 41" N  9° 0' 53" W  View metadata report for BODC series reference number 896666
8966782005-10-16 05:30  — 2005-10-16 06:12 60° 15' 45" N  9° 0' 37" W  View metadata report for BODC series reference number 896678
8966912005-10-16 07:55  — 2005-10-16 08:42 60° 14' 58" N  9° 0' 26" W  View metadata report for BODC series reference number 896691
8967092005-10-16 10:51  — 2005-10-16 11:20 60° 13' 45" N  8° 59' 31" W  View metadata report for BODC series reference number 896709
8967102005-10-16 12:46  — 2005-10-16 12:58 60° 11' 20" N  8° 57' 40" W  View metadata report for BODC series reference number 896710
8967222005-10-16 21:16  — 2005-10-16 21:44 60° 25' 34" N  8° 14' 37" W  View metadata report for BODC series reference number 896722
8967342005-10-18 14:13  — 2005-10-18 14:18 63° 18' 59" N  20° 12' 10" W  View metadata report for BODC series reference number 896734
8967462005-10-18 16:29  — 2005-10-18 16:53 63° 8' 16" N  19° 54' 47" W  View metadata report for BODC series reference number 896746
8967582005-10-18 19:45  — 2005-10-18 20:20 62° 54' 57" N  19° 32' 39" W  View metadata report for BODC series reference number 896758
8967712005-10-18 23:25  — 2005-10-18 23:59 62° 40' 5" N  19° 40' 20" W  View metadata report for BODC series reference number 896771
8967832005-10-19 03:45  — 2005-10-19 04:34 62° 20' 1" N  19° 49' 53" W  View metadata report for BODC series reference number 896783
8967952005-10-19 08:09  — 2005-10-19 08:46 61° 59' 57" N  20° 0' 11" W  View metadata report for BODC series reference number 896795
8968022005-10-23 11:00  — 2005-10-23 11:14 58° 58' 16" N  13° 34' 55" W  View metadata report for BODC series reference number 896802
8968142005-10-23 12:45  — 2005-10-23 13:05 58° 58' 34" N  13° 27' 13" W  View metadata report for BODC series reference number 896814
8968262005-10-23 14:47  — 2005-10-23 15:14 58° 58' 44" N  13° 23' 4" W  View metadata report for BODC series reference number 896826
8968382005-10-23 17:05  — 2005-10-23 17:38 58° 58' 59" N  13° 11' 59" W  View metadata report for BODC series reference number 896838
8968512005-10-23 19:45  — 2005-10-23 20:19 58° 59' 58" N  12° 57' 7" W  View metadata report for BODC series reference number 896851
8968632005-10-25 07:29  — 2005-10-25 07:36 57° 0' 3" N  8° 59' 52" W  View metadata report for BODC series reference number 896863
8968752005-10-25 09:24  — 2005-10-25 09:32 56° 54' 58" N  8° 38' 19" W  View metadata report for BODC series reference number 896875
8968872005-10-25 11:23  — 2005-10-25 11:28 56° 50' 9" N  8° 20' 2" W  View metadata report for BODC series reference number 896887
8968992005-10-25 13:46  — 2005-10-25 13:51 56° 46' 55" N  8° 0' 1" W  View metadata report for BODC series reference number 896899
8969062005-10-25 16:06  — 2005-10-25 16:09 56° 44' 4" N  7° 40' 22" W  View metadata report for BODC series reference number 896906
8969182005-10-25 18:29  — 2005-10-25 18:38 56° 49' 14" N  7° 23' 12" W  View metadata report for BODC series reference number 896918
8969312005-10-25 19:18  — 2005-10-25 19:30 56° 49' 31" N  7° 23' 50" W  View metadata report for BODC series reference number 896931
8969432005-10-25 20:02  — 2005-10-25 20:12 56° 49' 18" N  7° 24' 7" W  View metadata report for BODC series reference number 896943
8969552005-10-25 20:53  — 2005-10-25 21:00 56° 49' 15" N  7° 24' 39" W  View metadata report for BODC series reference number 896955
8969672005-10-25 21:40  — 2005-10-25 21:52 56° 48' 17" N  7° 23' 55" W  View metadata report for BODC series reference number 896967
8969792005-10-25 22:53  — 2005-10-25 22:59 56° 44' 2" N  7° 19' 53" W  View metadata report for BODC series reference number 896979
8969802005-10-26 00:25  — 2005-10-26 00:31 56° 44' 4" N  7° 10' 4" W  View metadata report for BODC series reference number 896980
8969922005-10-26 02:05  — 2005-10-26 02:11 56° 43' 59" N  6° 59' 57" W  View metadata report for BODC series reference number 896992
8970062005-10-26 03:46  — 2005-10-26 03:49 56° 43' 58" N  6° 44' 47" W  View metadata report for BODC series reference number 897006
8970182005-10-26 04:49  — 2005-10-26 04:53 56° 44' 3" N  6° 35' 52" W  View metadata report for BODC series reference number 897018
8970312005-10-26 06:12  — 2005-10-26 06:17 56° 44' 2" N  6° 26' 53" W  View metadata report for BODC series reference number 897031
8970432005-10-26 07:11  — 2005-10-26 07:15 56° 42' 30" N  6° 22' 0" W  View metadata report for BODC series reference number 897043
8970552005-10-26 08:08  — 2005-10-26 08:11 56° 41' 4" N  6° 16' 53" W  View metadata report for BODC series reference number 897055
8970672005-10-26 09:29  — 2005-10-26 09:38 56° 40' 1" N  6° 8' 3" W  View metadata report for BODC series reference number 897067
8970792005-10-19 13:57  — 2005-10-19 14:38 61° 29' 59" N  19° 59' 59" W  View metadata report for BODC series reference number 897079
8970802005-10-19 18:03  — 2005-10-19 18:50 61° 15' 8" N  20° 0' 15" W  View metadata report for BODC series reference number 897080
Discrete samples 
62  CTD frame plus rosette samplerAmmonium and ammonia concentration parameters in water bodies
Particulate total and organic carbon concentrations in the water column
Particulate total and organic nitrogen concentrations in the water column
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Salinity of the water column
Nitrate concentration parameters in the water column
Dissolved oxygen parameters in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
50  Sample taken from ship's non-toxic supplySalinity of the water column