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RRS Challenger CH35
Cruise summary report
| Cruise Info. | |||||
| Ship name (ship code) | RRS Challenger (74CH) | ||||
| Cruise identifier | CH35 | ||||
| Cruise period | 1988-09-03 — 1988-09-15 | ||||
| Status | Completed | ||||
| Port of departure | Great Yarmouth, United Kingdom | ||||
| Port of return | Great Yarmouth, United Kingdom | ||||
| Purpose | Research | ||||
| Objectives | One of a series of 15 North Sea Project survey cruises, each sailing the same predetermined track continuously measuring temperature, salinity, chlorophyll, suspended solids, currents, bathymetry and irradiance. A CTD+fluorometer+transmissomter+lightmeter package with a 12-bottle rosette was deployed on as many of 127 pre-determined stations as possible. Water samples were analysed for chlorophyll, suspended load, nutrients and sometimes metals. Weather permitting, six current meter moorings were serviced on each survey cruise. | ||||
| Chief scientist | James Watson (Scottish Marine Biological Association) | ||||
| Project | NERC North Sea Project | ||||
| Coordinating body | NERC | ||||
| Ocean/sea areas | |||||
| General | North Sea | ||||
| Specific | North Sea | ||||
| Measurements | |||||
| Physical oceanography | |||||
| Surface measurements underway (T,S) | Quantity: track kilometres = 2000 | ||||
| Water bottle stations | Quantity: number of stations = 110 | ||||
| CTD stations | Quantity: number of stations = 110 | ||||
| Subsurface temperature measurements | Quantity: number of recoveries = 4 Description: +2 deployed | ||||
| Transparency (eg transmissometer) | Quantity: track kilometres = 2000 | ||||
| Transparency (eg transmissometer) | Quantity: number of stations = 110 | ||||
| Optics (eg underwater light levels) | Quantity: track kilometres = 2000 | ||||
| Optics (eg underwater light levels) | Quantity: number of stations = 110 | ||||
| Current meters | Quantity: number of recoveries = 3 Description: +3 deployed | ||||
| Current profiler (eg ADCP) | Quantity: track kilometres = 2000 Description: shipborne ADCP, profiles every 10 minutes | ||||
| Current profiler (eg ADCP) | Quantity: number of recoveries = 3 Description: +2 deployed | ||||
| Chemical oceanography | |||||
| Oxygen | Quantity: number of stations = 5 | ||||
| Oxygen | Quantity: number of stations = 110 | ||||
| Oxygen | Quantity: track kilometres = 2000 | ||||
| Phosphate | Quantity: number of stations = 110 | ||||
| Nitrate | Quantity: number of stations = 110 | ||||
| Nitrite | Quantity: number of stations = 110 | ||||
| Silicate | Quantity: number of stations = 110 | ||||
| Contamination | |||||
| Suspended matter | Quantity: number of stations = 90 | ||||
| Biology and fisheries | |||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 110 Description: +phytoplankton species every 2nd station | ||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: track kilometres = 2000 | ||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 110 | ||||
| Zooplankton | Quantity: number of stations = 75 Description: 300 um vertical townet (incl. 17 of 50 um net) | ||||
| Benthic bacteria/micro-organisms | Quantity: number of stations = 5 | ||||
| Meteorology | |||||
| Atmospheric chemistry | Quantity: number of surveys = 1 Description: High volume filters/large aerosol sampling. Rainwater sampling poor | ||||
| Geology and geophysics | |||||
| Core - soft bottom | Quantity: number of stations = 5 | ||||
| Moorings, landers, buoys | |||||
| Physical oceanography | |||||
| Subsurface temperature measurements | 53° 29' 41" N 2° 59' 53" E — recovered 06 Sep 1988 | ||||
| Subsurface temperature measurements | 54° 19' 59" N 0° 24' 0" E — recovered 12 Sep 1988 and redeployed | ||||
| Subsurface temperature measurements | 55° 30' 11" N 5° 31' 11" E — recovered 09 Sep 1988 | ||||
| Subsurface temperature measurements | 53° 30' 0" N 3° 0' 6" E — relaid 06 Sep 1988 | ||||
| Subsurface temperature measurements | 55° 30' 29" N 0° 53' 42" E — recovered 10 Sep 1988 and redeployed | ||||
| Subsurface temperature measurements | 55° 30' 11" N 5° 30' 29" E — relaid 09 Sep 1988 | ||||
| Current meters | 55° 30' 0" N 5° 30' 11" E — deployed 09 Sep 1988 | ||||
| Current meters | relaid 06 Sep 1988 (site F) | ||||
| Current meters | 52° 36' 29" N 3° 45' 11" E — recovered 06 Sep 1988 (site F) | ||||
| Current meters | 55° 29' 35" N 5° 28' 48" E — mooring B recovered 09 Sep 1988 by grappling | ||||
| Current meters | 52° 42' 6" N 2° 25' 11" E — recovered 15 Sep 1988 and redeployed | ||||
| Current profiler (eg ADCP) | 53° 30' 0" N 3° 0' 0" E — recovered 06 Sep 1988 | ||||
| Current profiler (eg ADCP) | 55° 30' 6" N 0° 54' 18" E — recovered 10 Sep 1988 (site A) and redeployed | ||||
| Current profiler (eg ADCP) | 53° 30' 0" N 2° 59' 42" E — relaid 06 Sep 1988 | ||||
| Current profiler (eg ADCP) | 54° 19' 59" N 0° 24' 18" E — recovered 12 Sep 1988 | ||||
| Data held at BODC | Get data | ||||
| Series/Profiles | |||||
| 198 Bottle station | Reference numbers Nitrite concentration parameters in the water column Vertical spatial coordinates Phosphate concentration parameters in the water column Dissolved oxygen parameters in the water column Silicate concentration parameters in the water column Nitrate concentration parameters in the water column Quality control flags Chlorophyll pigment concentrations in water bodies Reference numbers Nitrite concentration parameters in the water column Vertical spatial coordinates Phosphate concentration parameters in the water column Dissolved oxygen parameters in the water column Silicate concentration parameters in the water column Nitrate concentration parameters in the water column Quality control flags Chlorophyll pigment concentrations in water bodies
| ||||
| 109 CTD/STD cast | Transmittance and attenuance of the water column Dissolved oxygen parameters in the water column Temperature of the water column Vertical spatial coordinates Salinity of the water column Concentration of suspended particulate material in the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Chlorophyll pigment concentrations in water bodies Transmittance and attenuance of the water column Dissolved oxygen parameters in the water column Temperature of the water column Vertical spatial coordinates Salinity of the water column Concentration of suspended particulate material in the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Chlorophyll pigment concentrations in water bodies
| ||||
| Discrete samples | |||||
| 8 Bulk filtered air sample | |||||
| 109 CTD frame plus rosette sampler | Transmittance and attenuance of the water column Nitrite concentration parameters in the water column Zooplankton taxonomy-related abundance per unit volume of the water column Temperature of the water column Dissolved oxygen parameters in the water column Phytoplankton taxonomic abundance in water bodies Phosphate concentration parameters in the water column Salinity of the water column Concentration of suspended particulate material in the water column Silicate concentration parameters in the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Microzooplankton taxonomic abundance in water bodies Phytoplankton generic abundance in water bodies Metadata parameters Microzooplankton generic abundance in water bodies Nitrate concentration parameters in the water column Chlorophyll pigment concentrations in water bodies Primary production in the water column | ||||
| 1 Cascade impactor atmospheric sampler | |||||
| 5 Multicorer | Concentration of organic matter in sediments Other fluxes between the bed and the water column Temperature of the water column Dissolved oxygen parameters for sediments Nutrient concentrations in sediment pore waters Nutrient fluxes between the bed and the water column Sediment water content, porosity and surface area Metadata parameters Reduction rates in bed sediments | ||||
| 1 Rain water collector | |||||
| 56 Unspecified zooplankton net or nets |
