European Directory of Marine Environmental Data (EDMED)

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Data set name

Biogeochemistry in the Deep Ocean Benthic Boundary (BENBO) programme data set

Data holding centreBritish Oceanographic Data Centre
CountryUnited Kingdom  United Kingdom
Time period1997 to 1999
Geographical area

Field study area: Rockall Trough.Site A Mouth of Rockall Trough 52.92 N 16.92 W 3580m depthSite B Hatton-Rockall Basin 57.43 N 15.68 W 1100m depthSite C Flank of Feni Drift 57.10 N 12.52 W


Transmittance and attenuance of the water column; Carbon concentrations in sediment; Variable fluorescence parameters; Dissolved oxygen parameters in the water column; Bacterial growth; Amino acids in sediment; Stable isotope enrichment in biota; Vertical velocity of the water column (currents); Bathymetry and Elevation; Trace metalloid concentrations in sediment pore water; Dissolved trace metalloid concentrations in the water column; Sediment grain size parameters; Sedimentation flux quantification in the water column; Metal concentrations in sediment pore waters; Nutrient concentrations in sediment pore waters; Dissolved organic carbon concentrations in sediment pore waters; Phosphate concentration parameters in the water column; Salinity of the water column; Ocean colour and earth-leaving visible waveband spectral radiation; Horizontal velocity of the water column (currents); Inorganic chemical composition of sediment or rocks; Hydrolytic activity in sediment; Stable isotope enrichment in sediment pore waters; Geological sample radioactivity; Sound velocity and travel time in the water column; Temperature of the water column; Visible waveband radiance and irradiance measurements in the water column; Sediment water content, porosity and surface area; Zooplankton taxonomy-related abundance per unit volume of the water column; Zoobenthos taxonomy-related counts; Acoustic backscatter in the water column; Metal concentrations in biota


Current meters; radiometers; optical backscatter sensors; transmissometers; CTD; thermosalinographs; benthic incubation chambers; single-beam echosounders; multi-beam echosounders; underwater cameras; acoustic backscatter sensors; sound velocity sensors; benthos samplers; ocean colour radiometers; sediment traps; unconsolidated sediment corers; electron microscopes; mass spectrometers


This dataset includes physical, biological and biogeochemical measurements of both the water column and seabed sediments. Hydrographic data include temperature, salinity, attenuance, dissolved oxygen, fluorescence, photosynthetically active radiation (PAR), sound velocity and current velocities, while biogeochemical analyses of water samples provided measurements of nutrients and biological sampling provided measurements of zooplankton abundance. A large number of benthic parameters were measured, including concentrations of substances such as nutrients, metals and carbon in both sediments and sediment pore waters. Benthic fauna were also studied, while rates of sedimentation flux were quantified. These oceanographic and benthic data were supplemented by satellite ocean colour imagery. The data were collected in the North Atlantic Ocean at the Mouth of Rockall Trough, Hatton-Rockall Basin and the Flank of Feni Drift between August 1997 and June 1999 over four cruises, comprising a preliminary site assessment (CD 107 August, 1997) followed by two process cruises (CD 111, April-May 1998, and CD 113, June-July 1998). A further cruise (CH 143) was part-funded by BENBO to retrieve moorings. The data were collected using a variety of instrumentation, including shipboard deployment of conductivity-temperature-depth (CTD) profilers with attached auxiliary sensors, benthic samplers, landers, cameras and incubation chambers, water samplers and continuous underway sensors. These were supplemented by moored sensor and satellite data. The BENBO programme was led by the Scottish Association for Marine Science/Dunstaffnage Marine Laboratory involved researchers from Southampton Oceanography Centre, Scottish Universities Research and Reactor Centre, Plymouth Marine Laboratory, Lancaster University, Leeds University, Edinburgh University, Cambridge University and the University of Wales, Bangor.

OriginatorsBangor University School of Ocean Sciences
Dunstaffnage Marine Laboratory
Lancaster University, Department of Environmental Science
Plymouth Marine Laboratory
Scottish Association for Marine Science
Scottish Universities Research Reactor Centre
Southampton Oceanography Centre
University of Cambridge Department of Earth Sciences
University of Edinburgh, School of GeoSciences
University of Leeds, School of Earth and Environment
OrganisationBritish Oceanographic Data Centre
ContactPolly Hadžiabdić (Head of the BODC Requests Team)

British Oceanographic Data Centre
Joseph Proudman Building 6 Brownlow Street
L3 5DA
United Kingdom

Telephone+44 (0) 151 795 4884
Collating centreBritish Oceanographic Data Centre
Local identifier1048095
Global identifier587
Last revised2010-11-22