Cruise inventory
RRS James Clark Ross JR20081003 (AMT18, JR218)
Cruise summary report
| Cruise Info. | |||||||||||||
| Cruise period | 2008-10-03 — 2008-11-10 | ||||||||||||
| Status | Completed | ||||||||||||
| Port of departure | Immingham, United Kingdom | ||||||||||||
| Port of return | Stanley, Falkland Islands (Malvinas) | ||||||||||||
| Purpose | Research | ||||||||||||
| Objectives | AMT (2007-2012) will include five transects between the UK and the Falkland Islands collecting core hydrographic, chemical, ecological and optical data. Many of these measurements will be made in underway mode (either via towed instruments or those connected to a non-toxic surface seawater supply onboard) with minimum personnel intervention. However depth profiles of CTD+water samples will also be taken at daily pre-dawn and mid-morning stations to a maximum of 1000m.
The physical environment will be characterised using vessel mounted ADCP and towed undulating profiler (MVP or SeaSoar) data (McDonagh et al., 2006). Boundaries between upper ocean water masses, edges of eddies and unstable fronts, will be determined by the position of current jets and compared with near real-time satellite images and upper ocean density sections. The depth distribution of inorganic nutrients (nitrate, nitrite, ammonia, phosphate and silicate) will be measured using standard auto-analytical and sensor techniques (Woodward et al., 1999; Johnson & Coletti, 2002) in order to determine the depth of the nitracline and its impact on plankton production (Maranon et al., 2000). The distribution of other limiting nutrients (e.g. iron) and their atmospheric deposition pathways would be ideal subjects for SOFI collaboration. We will deploy a novel suite of optical- and video-based in-line instruments capable of characterising the whole phyto- and zooplanktonic size range from 1?m to 10mm diameter (FlowCam + LiZa). This suite will produce continuous real-time size-distributed biomass data on organisms classified by functional group. Phytoplanton community abundance and composition will be determined from high performance liquid chromatography (HPLC) analysis of pigments (Mantoura and Llewellyn 1983, Barlow et al. 1997) and the matrix factorisation software CHEMTAX (Mackey et al. 1996). The UV photoprotecting compounds, mycosporine-like amino | ||||||||||||
| Chief scientist | E Malcolm S Woodward (Plymouth Marine Laboratory) | ||||||||||||
| Project | Atlantic Meridional Transect | ||||||||||||
| Coordinating body | Plymouth Marine Laboratory | ||||||||||||
| Cruise report |  (5.66 MB) | ||||||||||||
| Ocean/sea areas | |||||||||||||
| General | North Atlantic Ocean South Atlantic Ocean | ||||||||||||
| Specific | North Atlantic Ocean, South Atlantic Ocean | ||||||||||||
| Track charts | (0.20 MB) | ||||||||||||
| Measurements | |||||||||||||
| Physical oceanography | |||||||||||||
| CTD stations | Quantity: number of stations = 102 Description: CTD station data, hydrography, Light, fluorescence, Oxygen, etc | ||||||||||||
| Subsurface temperature and salinity measurements | Quantity: activity duration in days = 36 Description: Ocean logger underway data, T, S. | ||||||||||||
| Optics (eg underwater light levels) | Quantity: number of stations = 30 Description: WP-2 net, vertical haul. 0-175m. bongo net single cast stns 1-6. double cast stations 7-30, taken pre-dawn every day. Optical profiling rig: FRRF, Ac-9, BB6, PAR, UV, CTD. Vertical profile 1-180m at or near local solar noon. | ||||||||||||
| Current profiler (eg ADCP) | Quantity: activity duration in days = 36 Description: ADCP current data for whole cruise duration. Navigation data, GPs, Ashtec, gyro, Best Nav. Underway salinity measurements. CTD station salinity calibration samples. | ||||||||||||
| Current profiler (eg ADCP) | Quantity: number of stations = 5 Description: Lowered ADCP | ||||||||||||
| Other physical oceanographic measurements | Quantity: track kilometres = 5300 Description: 22 Moving Vessel Profiler tows, CTD, fluorescence, O2. | ||||||||||||
| Other physical oceanographic measurements | Quantity: activity duration in days = 36 Description: ADCP current data for whole cruise duration. Navigation data, GPs, Ashtec, gyro, Best Nav. Underway salinity measurements. CTD station salinity calibration samples. | ||||||||||||
| Chemical oceanography | |||||||||||||
| Oxygen | Quantity: number of stations = 17 Description: Photochemical oxygen consumption experiments | ||||||||||||
| Oxygen | Quantity: number of profiles = 90 Description: Oxygen from CTD for sensor calibration | ||||||||||||
| Oxygen | Quantity: number of stations = 27 Description: Plankton Oxygen Production/Respiration | ||||||||||||
| Phosphate | Quantity: number of profiles = 60 Description: CTD. Water taken for nutrient analysis for most sampled depths. | ||||||||||||
| Nitrate | Quantity: number of profiles = 60 Description: CTD. Water taken for nutrient analysis for most sampled depths. | ||||||||||||
| Nitrite | Quantity: number of profiles = 60 Description: CTD. Water taken for nutrient analysis for most sampled depths. | ||||||||||||
| Ammonia | Quantity: number of stations = 17 Description: Phiotochemical ammoniafication Experiments | ||||||||||||
| Silicate | Quantity: number of profiles = 60 Description: CTD. Water taken for nutrient analysis for most sampled depths. | ||||||||||||
| Isotopes | Quantity: number of measurements = 31 Description: Filters for d13C analysis and DIC analysis | ||||||||||||
| Other chemical oceanographic measurements | Quantity: number of measurements = 100 Description: Filter for Biogenic silica, particulate Organic Carbon, Particulate organic carbon, microscopic examination of cells and liths | ||||||||||||
| Other chemical oceanographic measurements | Quantity: activity duration in days = 36 Description: Continuous sampling for temperature, salinity, fluorescence, backscatter and acid labile backscatter. Run 24hours a day. Total radiance, Sky radiance during daylight hours. | ||||||||||||
| Other chemical oceanographic measurements | Quantity: number of samples = 255 Description: DOC/TDN samples. Discrete | ||||||||||||
| Other chemical oceanographic measurements | Quantity: number of measurements = 31 Description: Filters for d13C analysis and DIC analysis | ||||||||||||
| Other chemical oceanographic measurements | Quantity: number of measurements = 250 Description: Excitation/emission fluorescence scans (EEM?s). Discrete samples | ||||||||||||
| Other chemical oceanographic measurements | Quantity: number of profiles = 62 Description: Filter for Biogenic silica, particulate Organic Carbon, Particulate organic carbon, microscopic examination of cells and liths | ||||||||||||
| Biology and fisheries | |||||||||||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: activity duration in days = 36 Description: FRRF-underway measurements | ||||||||||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 30 Description: HPLC pigment samples, 6 depths, pre-dawn + Surface only, solar noon CTD. | ||||||||||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 102 Description: FRRF - lowered measurements | ||||||||||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of samples = 90 Description: Underway chlorophyll samples to calibrate underway TSG and MVP, 3 per day | ||||||||||||
| Phytoplankton | Quantity: number of measurements = 1580 Description: Non-toxic samples analysed by flow cytometer for picoplankton/bacteria. | ||||||||||||
| Phytoplankton | Quantity: number of profiles = 23 Description: Cell trap samples of phytoplankton for elemental composition analysis by X-ray TEM and ICP-MS | ||||||||||||
| Phytoplankton | Quantity: number of measurements = 1000 Description: Filters for SEM/LM analysis: coccolithophore abundance counts and assemblage counts | ||||||||||||
| Phytoplankton | Quantity: number of profiles = 30 Description: 10l samples from 6 light depths for DNA Dot blots, analysis for picoeukaryotic diversity+synechococcus+prochlorococcus. Filterd for fluorescent in situ hybridisation of picoeukaryotes, suface +1% light depth. Surface +1% light deopth water, concentrated and enriched for cultures | ||||||||||||
| Phytoplankton | Quantity: number of profiles = 10 Description: Cell traps from 2 surface +DCM for metagenomic and Transcriptomic analysis of synecoccus and prochlorococcus +picoeurokaryotes | ||||||||||||
| Phytoplankton | Quantity: number of stations = 60 Description: Pico and Nanophytoplankton quantification from predawn and solar noon CTDs. All depths, surface to 200m, analysed by flow cytometry | ||||||||||||
| Phytoplankton | Quantity: number of profiles = 70 Description: Pre-dawn and noon CTD samples analysed by flow cytometer for picoplankton | ||||||||||||
| Zooplankton | Quantity: number of stations = 30 Description: WP-2 net, vertical haul. 0-175m. bongo net single cast stns 1-6. double cast stations 7-30, taken pre-dawn every day. Optical profiling rig: FRRF, Ac-9, BB6, PAR, UV, CTD. Vertical profile 1-180m at or near local solar noon. | ||||||||||||
| Zooplankton | Quantity: number of samples = 30 Description: Specimens picked from zooplankton net hauls.predominately pteropods for molecular genetic anlaysis (~1000 specimens), also ostracods and planktonic foraminifera. | ||||||||||||
| Pelagic bacteria/micro-organisms | Quantity: number of samples = 93 Description: Sterivex seawater samples for bulk DNA | ||||||||||||
| Pelagic bacteria/micro-organisms | Quantity: number of profiles = 3 Description: CTD. Water from DCM taken for analysis of proportion of infected by phage:0.2+0.02?m filtered. | ||||||||||||
| Pelagic bacteria/micro-organisms | Quantity: number of measurements = 101 Description: Seawater filters for COD-FISH analysis. | ||||||||||||
| Pelagic bacteria/micro-organisms | Quantity: number of profiles = 70 Description: Pre-dawn and noon CTD samples analysed by flow cytometer for picoplankton | ||||||||||||
| Pelagic bacteria/micro-organisms | Quantity: number of measurements = 1580 Description: Non-toxic samples analysed by flow cytometer for picoplankton/bacteria. | ||||||||||||
| Pelagic bacteria/micro-organisms | Quantity: number of profiles = 15 Description: Samples to assess synecoccus and prochlorococcus using FISH | ||||||||||||
| Other biological/fisheries measurement | Quantity: number of profiles = 32 Description: Concentration of bacterial and eukaryotic cells on filters for molecular indentification by FISH + clone libraries. Bioassays to determine ambient concentration of leucine, methionine and phosphate (phosphate only in northern atlantic gyre) | ||||||||||||
| Other biological/fisheries measurement | Quantity: number of stations = 10 Description: Gazing experiments using radio-labelled methionine and leucine (bacterioplankton) | ||||||||||||
| Meteorology | |||||||||||||
| Other meteorological measurements | Quantity: number of stations = 62 Description: Sun photometer readings ? as and when the sun was completely unobscured | ||||||||||||
| Other meteorological measurements | Quantity: activity duration in days = 36 Description: Continuous sampling for temperature, salinity, fluorescence, backscatter and acid labile backscatter. Run 24hours a day. Total radiance, Sky radiance during daylight hours. | ||||||||||||
| Moorings, landers, buoys | |||||||||||||
| Physical oceanography | |||||||||||||
| Surface drifters/drifting buoys | 29° 37' 50" S 26° 57' 34" W — 1/11/08 @ 1246. float number 30003401250450 | ||||||||||||
| Surface drifters/drifting buoys | 43° 57' 19" S 45° 38' 38" W — 711/08 @ 133loat number 300034012548440 | ||||||||||||
| Surface drifters/drifting buoys | 41° 29' 53" S 42° 8' 14" W — 6/11/08 @ 1331. float number 300034012543440 | ||||||||||||
| Surface drifters/drifting buoys | 38° 45' 15" S 38° 26' 50" W — 5/11/08 @ 1326. float number 300034012542840 | ||||||||||||
| Surface drifters/drifting buoys | 32° 10' 53" S 29° 49' 30" W — 2/11/08 @ 1533. float number 300034012541450 | ||||||||||||
| Surface drifters/drifting buoys | 23° 58' 18" S 24° 59' 57" W — 30/10/08 @ 1357. float number 300034012727390 | ||||||||||||
| Surface drifters/drifting buoys | 26° 33' 29" S 24° 59' 38" W — 31/10/08 @ 1355. float number 300034012721390 | ||||||||||||
| Neutrally buoyant floats | 29° 37' 54" S 26° 57' 29" W — 1/11/08 @ 1244 Argo float number 3912 | ||||||||||||
| Neutrally buoyant floats | 26° 33' 26" S 24° 59' 47" W — 31/10/08 @ 1353 Argo float number 3910 | ||||||||||||
| Neutrally buoyant floats | 23° 59' 19" S 24° 59' 58" W — 30/10/08 @ 1409 Argo float number 3909 | ||||||||||||
| Neutrally buoyant floats | 41° 28' 49" S 42° 8' 18" W — 6/11/08 @ 1 28 Argo float number 3854 | ||||||||||||
| Neutrally buoyant floats | 32° 10' 49" S 29° 49' 30" W — 2/11/08 @ 1531 Argo float number 3911 | ||||||||||||
| Data held at BODC | |||||||||||||
| Series/Profiles | |||||||||||||
| 2 Bathythermograph (MBT/XBT) | Temperature of the water column Sound velocity and travel time in the water column Reference numbers Vertical spatial coordinates Temperature of the water column Sound velocity and travel time in the water column Reference numbers Vertical spatial coordinates
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| Discrete samples | |||||||||||||
| 102 CTD frame plus rosette sampler | Primary production in the water column Phytoplankton taxonomic abundance in water bodies Phosphate concentration parameters in the water column Light absorption in the water column Density of the water column Visible waveband radiance and irradiance measurements in the water column Particulate total and organic carbon concentrations in the water column Electrical conductivity of the water column Transmittance and attenuance of the water column Plankton abundance per unit volume of the water column Concentration of silicon species in the water column Silicate concentration parameters in the water column Dissolved oxygen parameters in the water column Ammonium concentration parameters in the water column Nitrate concentration parameters in the water column Raw oxygen sensor output Temperature of the water column Carotenoid pigment concentrations in the water column Particulate inorganic carbon concentrations in the water column Salinity of the water column Nitrite concentration parameters in the water column Chlorophyll pigment concentrations in the water column Oxygen production and respiration in the water column | ||||||||||||
| 366 Sample taken from ship's non-toxic supply | Particulate total and organic carbon concentrations in the water column Concentration of silicon species in the water column Particulate inorganic carbon concentrations in the water column Salinity of the water column Chlorophyll pigment concentrations in the water column |
