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Oxford Brookes University, Research School of Biological and Molecular Sciences

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  • The data set includes hydrographic profiles (including temperature, salinity, attenuance, chlorophyll, oxygen, irradiance, turbulence, sound velocity and currents), hydrographic time series (temperature, currents, fluorescence, bottom pressure), water samples (>70 parameters measured), sediment samples (>160 parameters measured), sediment trap samples (>10 parameters measured), production experiments and marine snow camera profiles. Additional meteorological and wave records are also available, as well as satellite imagery and underwater photography (water column and seabed). The data were collected on the Hebridean Slope (NW of Ireland) between March 1995 and September 1996. Measurements were collected via a combination of shipboard instrument deployments, including >1,800 conductivity-temperature-depth (CTD) and SeaSoar (undulating oceanographic recorder) profiles, >100 expendable bathythermograph (XBT) profiles, >38,000 acoustic Doppler current profiler (ADCP) profiles, >35 core profiles, >800 turbulence profiles, >40 marine snow camera profiles, >55 radiometer profiles and >25 sound velocity and travel time experiments. Benthic lander deployments were also undertaken, along with shipboard incubation experiments and drifting buoy deployments (48 tracks). An intensive water sampling programme provided >2,500 samples for biological and biogeochemical analysis. An extensive moored instrument array was maintained throughout the experiment, including sediment traps, recording current meters (104 series), electromagnetic current meters (9 series), ADCPs (16 series), thermistor chain and temperature probes (70 series), fluorometers (18 series), transmissometers (16 series), light meter (5 series), bottom pressure recorders (11 series), plus one waverider buoy series and three meteorological buoy time series. The Shelf Edge Study (SES) was an intensive multidisciplinary experiment and formed part of the NERC Land Ocean Interaction Study. The British Oceanographic Data Centre (BODC) assembled over 95% of the data sets collected during SES into its project database system. Once basic quality control procedures had been completed the data set was published, complete with extensive data documentation, on CD-ROM.