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BODC Cruise Metadata Report for RRS Charles Darwin (74AB) cruise CD61

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 CD61
Short name CD61
Objectives and Narrative A) To determine rates of coccolithophore photosynthesis and calcification in relation to the stage of development and species composition of the annual bloom in the S. Iceland basin.
B) To measure water column primary production and specific phytoplankton growth rates within and outside the coccolithophore bloom, using fractionation techniques to estimate the relative importance of different size groups of autotrophic cells.
C) To measure rates of grazing on coccolithophores by herbivorous meso- and micro-plankton with special attention to grazing efficiency with respect to the size and density of coccolithophore cells and to the nature (composition, pellet size anddensity etc.) of faecal material.
D) To measure sedimentation rates and particle characteristics throughout the deep water column, both within and outside a coccolithophore bloom, using drifting sediment traps, stand-alone pumps, camera systems and large-volume water bottles.
E) To identify elements of the protozoan community involved in coccolithophore aggregate remineralisation, and to determine the relative importance of bacteria and protozoa on the degradation and transformation of aggregates.
F) To determine the primary production rates of alkenones and other primary produced biomarkers in relation to coccolithophore production, and to determine the export flux of biomarkers relative to POC flux, and their relative loss through the water column.
Ship RRS Charles Darwin
Departure Port Troon, United Kingdom
Departure Date 1991-07-06
Arrival Port Barry, United Kingdom
Arrival Date 1991-07-29
Principal Scientist(s) Roger Harris (Plymouth Marine Laboratory)
Responsible Organisation Ocean Exploration Trust
Associated Project(s) Biogeochemical Ocean Flux Study (BOFS)/UK contr. to JGOFS
IHB Sea Areas Visited North East Atlantic Ocean (limit 40W)
Marsden Squares Visited 182;3/182;4/218;1/218;2/219;1
Work Area Description centred on 61N, 20W
Work Area Bounding Polygon 55N,25W; 65N,25W; 65N,10W; 55N,10W; 55N,25W
Southern Limit 55N
Northern Limit 65N
Western Limit 25W
Eastern Limit 10W

Cruise Inventory Datasets

Physical oceanography  
Bathythermograph Quantity: number of profiles = 50
Description:  
CTD stations Quantity: number of profiles = 57
Description:  
Surface measurements underway (T,S) Description: cont. T,S,O2,fluorescence,transmittance,nutrients,pCO2  
Water bottle stations Quantity: number of profiles = 30
Description: 3 with T only  
Chemical oceanography  
Isotopes Quantity: number of samples = 11
Description: surface water filtrations - parameters as for SAPs  
Isotopes Quantity: number of deployments = 13
Description: SAPs - stable carbon and nitrogen isotopes  
Nitrate Description: nutrient uptake experiments  
Nitrate Quantity: number of profiles = 9
Description: 84 samples  
Nitrite Description: nutrient uptake experiments  
Oxygen Quantity: number of profiles = 57
Description: 21 samples  
Phosphate Description: nutrient uptake experiments  
Silicate Quantity: number of profiles = 9
Description: 84 samples  
Biology and fisheries  
Biochemical measurements (eg lipids, amino acids) Quantity: number of deployments = 13
Description: Stand Alone Pumps (SAPS) - lipid biomarkers,molecular genetics,pigments  
Biochemical measurements (eg lipids, amino acids) Quantity: number of samples = 21
Description: underway filtrations - lipd biomarkers, pigments, molecular genetic studies  
Biochemical measurements (eg lipids, amino acids) Quantity: number of samples = 11
Description: surface water filtrations, parameteres as for SAPs  
Biochemical measurements (eg lipids, amino acids) Quantity: number of samples = 164
Description: molecular biology calcification, O2 primary prod,eukaryote/prokaryote DNA/RNA  
Particulate organic matter (inc POC, PON) Quantity: number of deployments = 13
Description: SAPs - particulate carbon, nitrogen, calcium, barium  
Particulate organic matter (inc POC, PON) Quantity: number of samples = 350
Description:  
Particulate organic matter (inc POC, PON) Quantity: number of samples = 11
Description: surface water filtrations - parameters as for SAPs  
Phytoplankton Quantity: number of samples = 11
Description: species composition, coccolithophoroid cell isolations and cultures  
Phytoplankton Quantity: number of samples = 350
Description:  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of stations = 12
Description: 350 samples  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of samples = 21
Description:  
Primary productivity Quantity: number of samples = 121
Description: bacterial production and numbers  
Primary productivity Quantity: number of experiments = 12
Description: 14C technique  
Zooplankton Quantity: number of samples = 73
Description: mesozooplankton sampling, grazing and biomass  
Geology and geophysics  
Core - soft bottom Quantity: number of deployments = 4
Description: multicorer  

Cruise Inventory Mooring/Buoy Operations

No information on datasets is currently available

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
9 Bottle station Nitrate concentration parameters in the water column
Quality control flags
Reference numbers
Silicate concentration parameters in the water column
Vertical spatial coordinates
23 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Dissolved oxygen parameters in the water column
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
34 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Dissolved oxygen parameters in the water column
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Visible waveband radiance and irradiance measurements in the water column

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

Full List

BODC Reference Instrument Description Date/Time Location  
958487 CTD/STD cast 1991-07-12 04:39Z 61° 4' N, 20° 0' W Click for more
958499 CTD/STD cast 1991-07-12 08:37Z 61° 32' N, 20° 37' W Click for more
958506 CTD/STD cast 1991-07-12 12:29Z 61° 33' N, 19° 30' W Click for more
958518 CTD/STD cast 1991-07-12 19:52Z 60° 33' N, 20° 33' W Click for more
958531 CTD/STD cast 1991-07-12 23:39Z 60° 33' N, 19° 24' W Click for more
958543 CTD/STD cast 1991-07-13 04:36Z 61° 4' N, 20° 0' W Click for more
958555 CTD/STD cast 1991-07-13 11:11Z 61° 4' N, 19° 59' W Click for more
958567 CTD/STD cast 1991-07-14 05:10Z 61° 6' N, 19° 36' W Click for more
958579 CTD/STD cast 1991-07-14 05:39Z 61° 6' N, 19° 36' W Click for more
958580 CTD/STD cast 1991-07-14 07:20Z 61° 7' N, 19° 36' W Click for more
958592 CTD/STD cast 1991-07-14 08:55Z 61° 8' N, 19° 35' W Click for more
958611 CTD/STD cast 1991-07-14 12:38Z 61° 9' N, 19° 33' W Click for more
958623 CTD/STD cast 1991-07-15 05:20Z 61° 16' N, 19° 39' W Click for more
958635 CTD/STD cast 1991-07-15 11:43Z 61° 16' N, 19° 46' W Click for more
958647 CTD/STD cast 1991-07-16 04:21Z 61° 12' N, 19° 59' W Click for more
958659 CTD/STD cast 1991-07-16 06:22Z 61° 10' N, 20° 1' W Click for more
958660 CTD/STD cast 1991-07-16 09:39Z 61° 11' N, 20° 3' W Click for more
958672 CTD/STD cast 1991-07-16 23:00Z 61° 8' N, 20° 4' W Click for more
958684 CTD/STD cast 1991-07-17 03:10Z 61° 5' N, 19° 49' W Click for more
958696 CTD/STD cast 1991-07-17 12:09Z 61° 7' N, 19° 40' W Click for more
958703 CTD/STD cast 1991-07-17 17:07Z 61° 8' N, 19° 33' W Click for more
958715 CTD/STD cast 1991-07-17 23:44Z 61° 10' N, 19° 27' W Click for more
958727 CTD/STD cast 1991-07-18 03:33Z 61° 13' N, 19° 33' W Click for more
958739 CTD/STD cast 1991-07-18 05:26Z 61° 14' N, 19° 31' W Click for more
958740 CTD/STD cast 1991-07-18 07:12Z 61° 15' N, 19° 31' W Click for more
958752 CTD/STD cast 1991-07-18 11:13Z 61° 16' N, 19° 31' W Click for more
958764 CTD/STD cast 1991-07-18 16:58Z 61° 19' N, 19° 32' W Click for more
958776 CTD/STD cast 1991-07-18 23:14Z 61° 21' N, 19° 37' W Click for more
958788 CTD/STD cast 1991-07-19 05:57Z 61° 16' N, 19° 46' W Click for more
958807 CTD/STD cast 1991-07-19 11:05Z 61° 15' N, 19° 51' W Click for more
958819 CTD/STD cast 1991-07-19 17:02Z 61° 11' N, 19° 51' W Click for more
958820 CTD/STD cast 1991-07-19 22:47Z 61° 7' N, 19° 50' W Click for more
958832 CTD/STD cast 1991-07-20 03:24Z 61° 6' N, 19° 51' W Click for more
958844 CTD/STD cast 1991-07-20 04:58Z 61° 5' N, 19° 49' W Click for more
958856 CTD/STD cast 1991-07-20 11:12Z 61° 3' N, 19° 45' W Click for more
958868 CTD/STD cast 1991-07-20 17:55Z 61° 3' N, 19° 34' W Click for more
958881 CTD/STD cast 1991-07-20 23:32Z 61° 5' N, 19° 28' W Click for more
958893 CTD/STD cast 1991-07-21 03:46Z 61° 9' N, 19° 33' W Click for more
958900 CTD/STD cast 1991-07-21 05:03Z 61° 9' N, 19° 32' W Click for more
958912 CTD/STD cast 1991-07-21 14:04Z 61° 1' N, 19° 40' W Click for more
958924 CTD/STD cast 1991-07-21 17:33Z 61° 5' N, 19° 40' W Click for more
958936 CTD/STD cast 1991-07-21 20:50Z 61° 10' N, 19° 41' W Click for more
958948 CTD/STD cast 1991-07-22 00:13Z 61° 15' N, 19° 42' W Click for more
958961 CTD/STD cast 1991-07-22 04:28Z 61° 21' N, 19° 42' W Click for more
958973 CTD/STD cast 1991-07-22 09:05Z 61° 40' N, 20° 14' W Click for more
958985 CTD/STD cast 1991-07-22 13:35Z 61° 40' N, 19° 5' W Click for more
958997 CTD/STD cast 1991-07-22 17:28Z 61° 10' N, 19° 41' W Click for more
959000 CTD/STD cast 1991-07-23 00:23Z 60° 41' N, 20° 16' W Click for more
959012 CTD/STD cast 1991-07-23 05:19Z 60° 42' N, 19° 7' W Click for more
959024 CTD/STD cast 1991-07-23 09:13Z 61° 10' N, 19° 48' W Click for more
959036 CTD/STD cast 1991-07-23 12:50Z 61° 30' N, 19° 42' W Click for more
959048 CTD/STD cast 1991-07-23 20:28Z 62° 30' N, 20° 0' W Click for more
959061 CTD/STD cast 1991-07-23 21:22Z 62° 29' N, 19° 59' W Click for more
959073 CTD/STD cast 1991-07-24 02:46Z 62° 29' N, 20° 2' W Click for more
959085 CTD/STD cast 1991-07-24 11:32Z 62° 30' N, 20° 0' W Click for more
959097 CTD/STD cast 1991-07-24 12:59Z 62° 30' N, 20° 2' W Click for more
959104 CTD/STD cast 1991-07-24 17:55Z 62° 29' N, 19° 59' W Click for more
1232573 Bottle station 1991-07-18 01:52Z 61° 12' N, 19° 34' W Click for more
1232585 Bottle station 1991-07-13 13:29Z 61° 3' N, 19° 57' W Click for more
1232597 Bottle station 1991-07-14 09:59Z 61° 8' N, 19° 35' W Click for more
1232604 Bottle station 1991-07-18 05:38Z 61° 14' N, 19° 31' W Click for more
1232616 Bottle station 1991-07-18 08:25Z 61° 15' N, 19° 31' W Click for more
1232628 Bottle station 1991-07-22 13:49Z 61° 40' N, 19° 5' W Click for more
1232641 Bottle station 1991-07-23 20:40Z 62° 30' N, 20° 0' W Click for more
1232653 Bottle station 1991-07-23 22:01Z 62° 29' N, 19° 59' W Click for more
1232665 Bottle station 1991-07-24 11:46Z 62° 30' N, 20° 0' W Click for more

Project Database

# Events Gear Type Parameters Held
7 In situ productivity incubations
13 Stand-alone pumps
Concentration of alkenones and alkenoates in the water column
209 Sample taken from ship's non-toxic supply Primary production in the water column
Chlorophyll pigment concentrations in water bodies
Phytoplankton taxonomic abundance in water bodies
Phaeopigment concentrations in the water column
Concentration of alkenones and alkenoates in the water column
Microzooplankton taxonomic abundance in water bodies
Phytoplankton generic abundance in water bodies
5 Drifting rig with sediment traps
20 Water bottle hydrocast
Bacteria generic abundance in water bodies
Bacterial production in the water column
Chlorophyll pigment concentrations in water bodies
Primary production in the water column
Silicate concentration parameters in the water column
Microzooplankton grazing
Nitrate concentration parameters in the water column
Regenerated production in water bodies
New production in water bodies
2 Nutrient pump profile
60 CTD frame plus rosette sampler
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Density of the water column
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Salinity of the water column
Microzooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column
Temperature of the water column
Nitrate concentration parameters in the water column
Dissolved oxygen parameters in the water column
Concentration of alkenones and alkenoates in the water column
Phaeopigment concentrations in the water column
Microzooplankton generic abundance in water bodies
51 Unspecified zooplankton net or nets
43 Expendable Bathythermograph Temperature of the water column
4 Multicorer

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

References

Track Charts

Track Chart

Reports

Cruise Report