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BODC Cruise Metadata Report for RRS Charles Darwin (74AB) cruise CD176

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RRS Charles Darwin (74AB) cruise CD176
Short name CD176
Objectives and Narrative The 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
Ship RRS Charles Darwin
Departure Port Birkenhead, United Kingdom
Departure Date 2005-10-06
Arrival Port Falmouth, United Kingdom
Arrival Date 2005-11-01
Principal Scientist(s) Toby J Sherwin (Scottish Association for Marine Science)
Responsible Organisation Scottish Association for Marine Science
Associated Project(s) Northern Seas Programme
IHB Sea Areas Visited Inner Seas off the West Coast of Scotland, North East Atlantic Ocean (limit 40W)
Marsden Squares Visited 181;4/182;3/182;4/217;1/217;2/218;1/218;2
Work Area Description Malin Shelf; Rockall Trough; Rockall Bank; Iceland Basin, Wyville Thomson Ridge, Faroe-Shetland Channel
Work Area Bounding Polygon 55N,20W; 65N,20W; 65N,0E; 55N,0E; 55N,20W
Southern Limit 55N
Northern Limit 65N
Western Limit 20W
Eastern Limit 0E

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of stations = 66
Description: Continuous profiles of pressure, temperature, conductivity, LADCP (up and down), fluorometer, dissolved oxygen, transmissometer  
Surface measurements underway (T,S) Quantity: track kilometres = 3148
Description: Continuous underway Sea Temp, Salinity, ADCP, Tranmissometer, Fluorometer  
Chemical oceanography  
Ammonia Quantity: number of samples = 400
Description: Ammonium profiles  
Nitrate Quantity: number of samples = 400
Description: Combined NO2, NO3 profiles  
Nitrate Quantity: number of samples = 153
Description: Underway nitrate  
Nitrite Quantity: number of samples = 100
Description: Near surface nitrite profiles  
Other chemical oceanographic measurements Quantity: number of samples = 300
Description: Dissolved and particulate aluminium profiles (E of 15 W only)  
Other chemical oceanographic measurements Quantity: number of samples = 153
Description: Underway surface dissolved iron samples  
Other chemical oceanographic measurements Quantity: number of samples = 16
Description: Dissolved iron profiles (Iceland Basin only)  
Oxygen Quantity: number of samples = 600
Description: Oxygen profiles  
Phosphate Quantity: number of samples = 153
Description: Underway phosphate  
Phosphate Quantity: number of samples = 400
Description: Phosphate profiles  
Silicate Quantity: number of samples = 400
Description: Silicate profiles  
Silicate Quantity: number of samples = 153
Description: Underway silicate  
pH Quantity: number of samples = 400
Description: pH profiles  
Biology and fisheries  
Mammals and reptiles Quantity: track kilometres = 1500
Description: Acoustic monitoring for sperm whales and dolphins (not in Icelandic waters)  
Mammals and reptiles Quantity: number of deployments = 27
Description: Hydrophones deployed at some CTD stations to detect baleen whales (not in Icelandic waters)  
Other biological/fisheries measurement Quantity: 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  
Particulate organic matter (inc POC, PON) Quantity: number of samples = 400
Description: POC profiles  
Meteorology  
Routine standard measurements Quantity: track kilometres = 3148
Description: Continuous underway Air temp, atmospheric pressure, port and starboard PAR, port and starboard TIR, wind speed and direction  
Geology and geophysics  
Core - soft bottom Quantity: number of cores = 7
Description: Megacore (either side of Wyville Thomson Ridge)  
Core - soft bottom Quantity: number of cores = 3
Description: Box core (Faroe-Shetland Channel)  
Multi-beam echosounding Quantity: number of surveys = 4
Description: Swath bathymetry - parts of: Wyville Thomson Ridge, Hatton Bank, Rockall Bank, George Bligh Bank  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
60° 14' N 8° 52' W Current profiler (eg ADCP) 1 Broadband ADCP 16 Oct 2005 (Ellett gully ADCP)
61° 15' N 20° 0' W Neutrally buoyant floats 1 Argo float 19 Oct 2005

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
1 Acoustic doppler current profiler Acoustic backscatter in the water column
Date and time
Horizontal velocity of the water column (currents)
Metadata parameters
Platform or instrument orientation
Reference numbers
Sea level
Temperature of the water column
Vertical spatial coordinates
Vertical velocity of the water column (currents)
10 Bottle station Metadata parameters
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Reference numbers
Silicate concentration parameters in the water column
Vertical spatial coordinates
34 Bottle station Ammonium and ammonia concentration parameters in water bodies
Metadata parameters
Nitrate concentration parameters in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Reference numbers
Silicate concentration parameters in the water column
Vertical spatial coordinates
1 Bottle station Ammonium and ammonia concentration parameters in water bodies
Metadata parameters
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Reference numbers
Silicate concentration parameters in the water column
Vertical spatial coordinates
65 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Dissolved oxygen parameters in the water column
Reference numbers
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
896389 CTD/STD cast 2005-10-07 09:58Z to 2005-10-07 10:03Z 55° 22' N, 6° 43' W Click for more
896390 CTD/STD cast 2005-10-08 03:26Z to 2005-10-08 03:32Z 57° 0' N, 9° 0' W Click for more
896408 CTD/STD cast 2005-10-08 05:44Z to 2005-10-08 05:58Z 57° 3' N, 9° 12' W Click for more
896421 CTD/STD cast 2005-10-08 08:09Z to 2005-10-08 09:36Z 57° 6' N, 9° 24' W Click for more
896433 CTD/STD cast 2005-10-10 12:58Z to 2005-10-10 13:43Z 57° 9' N, 9° 42' W Click for more
896445 CTD/STD cast 2005-10-10 17:24Z to 2005-10-10 18:43Z 57° 13' N, 10° 3' W Click for more
896457 CTD/STD cast 2005-10-10 22:50Z to 2005-10-10 23:41Z 57° 18' N, 10° 22' W Click for more
896469 CTD/STD cast 2005-10-11 03:08Z to 2005-10-11 04:13Z 57° 22' N, 10° 40' W Click for more
896470 CTD/STD cast 2005-10-11 07:50Z to 2005-10-11 08:16Z 57° 24' N, 10° 51' W Click for more
896482 CTD/STD cast 2005-10-11 10:12Z to 2005-10-11 10:34Z 57° 27' N, 11° 4' W Click for more
896494 CTD/STD cast 2005-10-11 14:49Z to 2005-10-11 15:07Z 57° 28' N, 11° 19' W Click for more
896501 CTD/STD cast 2005-10-11 16:53Z to 2005-10-11 17:39Z 57° 28' N, 11° 31' W Click for more
896513 CTD/STD cast 2005-10-11 21:15Z to 2005-10-11 22:07Z 57° 29' N, 11° 51' W Click for more
896525 CTD/STD cast 2005-10-12 01:17Z to 2005-10-12 02:00Z 57° 30' N, 12° 15' W Click for more
896537 CTD/STD cast 2005-10-12 04:49Z to 2005-10-12 05:26Z 57° 31' N, 12° 37' W Click for more
896549 CTD/STD cast 2005-10-12 08:08Z to 2005-10-12 08:47Z 57° 32' N, 12° 45' W Click for more
896550 CTD/STD cast 2005-10-12 11:14Z to 2005-10-12 11:41Z 57° 32' N, 12° 52' W Click for more
896562 CTD/STD cast 2005-10-12 15:55Z to 2005-10-12 16:02Z 57° 34' N, 13° 37' W Click for more
896574 CTD/STD cast 2005-10-12 18:31Z to 2005-10-12 18:38Z 57° 34' N, 13° 19' W Click for more
896586 CTD/STD cast 2005-10-12 20:23Z to 2005-10-12 20:36Z 57° 33' N, 13° 0' W Click for more
896598 CTD/STD cast 2005-10-14 09:31Z to 2005-10-14 10:05Z 60° 13' N, 6° 12' W Click for more
896605 CTD/STD cast 2005-10-14 11:20Z to 2005-10-14 11:55Z 60° 12' N, 6° 12' W Click for more
896617 CTD/STD cast 2005-10-14 13:53Z to 2005-10-14 14:12Z 60° 18' N, 6° 6' W Click for more
896629 CTD/STD cast 2005-10-14 23:59Z to 2005-10-15 00:29Z 60° 4' N, 6° 19' W Click for more
896630 CTD/STD cast 2005-10-15 02:04Z to 2005-10-15 02:29Z 60° 0' N, 6° 21' W Click for more
896642 CTD/STD cast 2005-10-15 23:45Z to 2005-10-16 00:02Z 60° 20' N, 9° 2' W Click for more
896654 CTD/STD cast 2005-10-16 01:45Z to 2005-10-16 02:14Z 60° 17' N, 9° 1' W Click for more
896666 CTD/STD cast 2005-10-16 03:38Z to 2005-10-16 04:16Z 60° 16' N, 9° 0' W Click for more
896678 CTD/STD cast 2005-10-16 05:30Z to 2005-10-16 06:12Z 60° 15' N, 9° 0' W Click for more
896691 CTD/STD cast 2005-10-16 07:55Z to 2005-10-16 08:42Z 60° 15' N, 9° 0' W Click for more
896709 CTD/STD cast 2005-10-16 10:51Z to 2005-10-16 11:20Z 60° 13' N, 8° 59' W Click for more
896710 CTD/STD cast 2005-10-16 12:46Z to 2005-10-16 12:58Z 60° 11' N, 8° 57' W Click for more
896722 CTD/STD cast 2005-10-16 21:16Z to 2005-10-16 21:44Z 60° 25' N, 8° 14' W Click for more
896734 CTD/STD cast 2005-10-18 14:13Z to 2005-10-18 14:18Z 63° 19' N, 20° 12' W Click for more
896746 CTD/STD cast 2005-10-18 16:29Z to 2005-10-18 16:53Z 63° 8' N, 19° 54' W Click for more
896758 CTD/STD cast 2005-10-18 19:45Z to 2005-10-18 20:20Z 62° 55' N, 19° 32' W Click for more
896771 CTD/STD cast 2005-10-18 23:25Z to 2005-10-18 23:59Z 62° 40' N, 19° 40' W Click for more
896783 CTD/STD cast 2005-10-19 03:45Z to 2005-10-19 04:34Z 62° 19' N, 19° 49' W Click for more
896795 CTD/STD cast 2005-10-19 08:09Z to 2005-10-19 08:46Z 62° 0' N, 20° 0' W Click for more
896802 CTD/STD cast 2005-10-23 11:00Z to 2005-10-23 11:14Z 58° 58' N, 13° 34' W Click for more
896814 CTD/STD cast 2005-10-23 12:45Z to 2005-10-23 13:05Z 58° 58' N, 13° 27' W Click for more
896826 CTD/STD cast 2005-10-23 14:47Z to 2005-10-23 15:14Z 58° 58' N, 13° 22' W Click for more
896838 CTD/STD cast 2005-10-23 17:05Z to 2005-10-23 17:38Z 58° 58' N, 13° 12' W Click for more
896851 CTD/STD cast 2005-10-23 19:45Z to 2005-10-23 20:19Z 59° 0' N, 12° 57' W Click for more
896863 CTD/STD cast 2005-10-25 07:29Z to 2005-10-25 07:36Z 57° 0' N, 9° 0' W Click for more
896875 CTD/STD cast 2005-10-25 09:24Z to 2005-10-25 09:32Z 56° 55' N, 8° 38' W Click for more
896887 CTD/STD cast 2005-10-25 11:23Z to 2005-10-25 11:28Z 56° 50' N, 8° 19' W Click for more
896899 CTD/STD cast 2005-10-25 13:46Z to 2005-10-25 13:51Z 56° 46' N, 8° 0' W Click for more
896906 CTD/STD cast 2005-10-25 16:06Z to 2005-10-25 16:09Z 56° 43' N, 7° 40' W Click for more
896918 CTD/STD cast 2005-10-25 18:29Z to 2005-10-25 18:38Z 56° 49' N, 7° 23' W Click for more
896931 CTD/STD cast 2005-10-25 19:18Z to 2005-10-25 19:30Z 56° 49' N, 7° 24' W Click for more
896943 CTD/STD cast 2005-10-25 20:02Z to 2005-10-25 20:12Z 56° 49' N, 7° 24' W Click for more
896955 CTD/STD cast 2005-10-25 20:53Z to 2005-10-25 21:00Z 56° 49' N, 7° 24' W Click for more
896967 CTD/STD cast 2005-10-25 21:40Z to 2005-10-25 21:52Z 56° 48' N, 7° 24' W Click for more
896979 CTD/STD cast 2005-10-25 22:53Z to 2005-10-25 22:59Z 56° 43' N, 7° 19' W Click for more
896980 CTD/STD cast 2005-10-26 00:25Z to 2005-10-26 00:31Z 56° 43' N, 7° 10' W Click for more
896992 CTD/STD cast 2005-10-26 02:05Z to 2005-10-26 02:11Z 56° 43' N, 7° 0' W Click for more
897006 CTD/STD cast 2005-10-26 03:46Z to 2005-10-26 03:49Z 56° 43' N, 6° 45' W Click for more
897018 CTD/STD cast 2005-10-26 04:49Z to 2005-10-26 04:53Z 56° 43' N, 6° 36' W Click for more
897031 CTD/STD cast 2005-10-26 06:12Z to 2005-10-26 06:17Z 56° 43' N, 6° 27' W Click for more
897043 CTD/STD cast 2005-10-26 07:11Z to 2005-10-26 07:15Z 56° 42' N, 6° 22' W Click for more
897055 CTD/STD cast 2005-10-26 08:08Z to 2005-10-26 08:11Z 56° 40' N, 6° 16' W Click for more
897067 CTD/STD cast 2005-10-26 09:29Z to 2005-10-26 09:38Z 56° 40' N, 6° 7' W Click for more
897079 CTD/STD cast 2005-10-19 13:57Z to 2005-10-19 14:38Z 61° 30' N, 20° 0' W Click for more
897080 CTD/STD cast 2005-10-19 18:03Z to 2005-10-19 18:50Z 61° 15' N, 20° 0' W Click for more
1014459 Acoustic doppler current profiler 2005-10-16 15:30Z to 2006-05-06 02:00Z 60° 14' N, 8° 52' W Click for more
1350789 Bottle station 2005-10-08 03:35Z 57° 0' N, 9° 0' W Click for more
1350790 Bottle station 2005-10-08 06:04Z 57° 3' N, 9° 12' W Click for more
1350808 Bottle station 2005-10-08 10:07Z 57° 6' N, 9° 24' W Click for more
1350821 Bottle station 2005-10-10 13:57Z 57° 9' N, 9° 42' W Click for more
1350833 Bottle station 2005-10-10 18:44Z 57° 13' N, 10° 3' W Click for more
1350845 Bottle station 2005-10-10 23:59Z 57° 18' N, 10° 22' W Click for more
1350857 Bottle station 2005-10-11 04:20Z 57° 22' N, 10° 40' W Click for more
1350869 Bottle station 2005-10-11 08:21Z 57° 24' N, 10° 51' W Click for more
1350870 Bottle station 2005-10-11 10:40Z 57° 27' N, 11° 4' W Click for more
1350882 Bottle station 2005-10-11 15:16Z 57° 28' N, 11° 19' W Click for more
1350894 Bottle station 2005-10-11 17:50Z 57° 28' N, 11° 31' W Click for more
1350901 Bottle station 2005-10-11 22:19Z 57° 29' N, 11° 51' W Click for more
1350913 Bottle station 2005-10-12 02:15Z 57° 30' N, 12° 15' W Click for more
1350925 Bottle station 2005-10-12 05:40Z 57° 31' N, 12° 37' W Click for more
1350937 Bottle station 2005-10-12 09:02Z 57° 32' N, 12° 45' W Click for more
1350949 Bottle station 2005-10-12 11:52Z 57° 32' N, 12° 52' W Click for more
1350950 Bottle station 2005-10-12 16:06Z 57° 34' N, 13° 37' W Click for more
1350962 Bottle station 2005-10-12 18:42Z 57° 34' N, 13° 19' W Click for more
1350974 Bottle station 2005-10-12 20:39Z 57° 33' N, 13° 0' W Click for more
1350986 Bottle station 2005-10-14 12:02Z 60° 12' N, 6° 12' W Click for more
1350998 Bottle station 2005-10-16 08:46Z 60° 15' N, 9° 0' W Click for more
1351001 Bottle station 2005-10-16 21:49Z 60° 25' N, 8° 14' W Click for more
1351013 Bottle station 2005-10-18 12:42Z 63° 13' N, 20° 3' W Click for more
1351025 Bottle station 2005-10-18 14:23Z 63° 19' N, 20° 12' W Click for more
1351037 Bottle station 2005-10-18 16:59Z 63° 8' N, 19° 54' W Click for more
1351049 Bottle station 2005-10-18 20:27Z 62° 55' N, 19° 32' W Click for more
1351050 Bottle station 2005-10-19 00:10Z 62° 40' N, 19° 40' W Click for more
1351062 Bottle station 2005-10-19 04:37Z 62° 19' N, 19° 49' W Click for more
1351074 Bottle station 2005-10-19 08:59Z 62° 0' N, 20° 0' W Click for more
1351086 Bottle station 2005-10-19 14:48Z 61° 30' N, 20° 0' W Click for more
1351098 Bottle station 2005-10-19 19:00Z 61° 15' N, 20° 0' W Click for more
1351105 Bottle station 2005-10-23 11:20Z 58° 58' N, 13° 34' W Click for more
1351117 Bottle station 2005-10-23 13:17Z 58° 58' N, 13° 27' W Click for more
1351129 Bottle station 2005-10-23 15:20Z 58° 58' N, 13° 22' W Click for more
1351130 Bottle station 2005-10-23 17:42Z 58° 58' N, 13° 12' W Click for more
1351142 Bottle station 2005-10-25 09:34Z 56° 55' N, 8° 38' W Click for more
1351154 Bottle station 2005-10-25 11:32Z 56° 50' N, 8° 19' W Click for more
1351166 Bottle station 2005-10-25 13:54Z 56° 46' N, 8° 0' W Click for more
1351178 Bottle station 2005-10-25 16:12Z 56° 43' N, 7° 40' W Click for more
1351191 Bottle station 2005-10-25 23:02Z 56° 43' N, 7° 19' W Click for more
1351209 Bottle station 2005-10-26 02:13Z 56° 43' N, 7° 0' W Click for more
1351210 Bottle station 2005-10-26 04:55Z 56° 43' N, 6° 36' W Click for more
1351222 Bottle station 2005-10-26 07:17Z 56° 42' N, 6° 22' W Click for more
1351234 Bottle station 2005-10-26 08:12Z 56° 40' N, 6° 16' W Click for more
1351246 Bottle station 2005-10-26 09:39Z 56° 40' N, 6° 7' W Click for more

Project Database

# Events Gear Type Parameters Held
7 Multicorer
3 Box core
66 CTD frame plus rosette sampler Ammonium 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
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Dissolved oxygen parameters in the water column
1 Instrument mooring
50 Sample taken from ship's non-toxic supply Salinity of the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report