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Redox potential in sediment

4 record(s)
 
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From 1 - 4 / 4

  • As part of the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment SEA2 a survey was undertaken in May/June 2001 for areas in the central and southern North Sea. This report summarises the sediment trace and heavy metal data generated from the analyses of selected samples from the three main study areas: the major sandbanks off the coast of Norfolk and Lincolnshire in the southern North Sea (SNS); the Dogger Bank in the SNS; and the pockmarks in the Fladen Ground vicinity of the central North Sea.

  • As part of the UK Department of Trade and Industry's (now Department of Energy and Climate Change) sectorial Strategic Environmental Assessment (SEA) programme a seabed survey programme (SEA2) was undertaken in May/June 2001 for areas in the central and southern North UKCS. This report summarises the sediment total hydrocarbon and aromatic data generated from the analyses of selected samples from three main study areas: area 1 (sand bank/wave study areas, Norfolk Coast), Area 2 (Dogger Bank transects) and Area 3 (South Fladen pockmark study areas of the central North Sea).

  • This report describes fieldwork operations of the North Sea Strategic Environmental Survey, Leg 2 conducted from S/V Kommandor Jack between 05 May and 21 May 2001 as part of the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment SEA2. The survey objectives were to carry out quantitative seabed sampling and seabed photography in three distinct areas: Area 1 - sand bank / wave study areas, off the Norfolk coast; Area 2 - Dogger Bank transects; Area 3 - South Fladen pockmark study areas. Contains brief description of seabed appearance and fauna. 269 samples were collected.

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    The dataset comprises hydrographic data, including salinity, temperature, depth, dissolved oxygen, transmittance (for suspended sediment), chlorophyll, irradiance, and current velocities. Both oceanographic and benthic measurements of nutrients (nitrate, nitrite, silicate, phosphate and ammonium), phytoplankton and zooplankton abundance, dissolved and particulate trace metals, primary and bacterial production, sulphur compounds and halocarbons were collected, as well as atmospheric physical and chemical measurements. The data were collected in the North Sea between August 1988 and October 1990 over a series of 38 cruises on RRS Challenger. Oceanographic measurements were taken using hydrographic profilers, moored instruments and shipboard underway systems. Underway meteorological data were also collected in addition to a comprehensive atmospheric sampling programme. Both continuous and discrete water samples were collected, providing biogeochemical and biological data. These were supplemented by net hauls. Benthic processes were investigated with sediment cores taken on eight survey cruises at six sites of varied character, three being in the area of summer stratification. Water and benthic sample analyses were supplemented by results of seabed and shipboard incubation experiments. The North Sea Project evolved from a NERC review of shelf seas research, which identified the need for a concerted multidisciplinary study of circulation, transport and production. The Proudman Oceanographic Laboratory (POL), now the National Oceanography Centre (NOC) hosted the project. It involved over 200 scientists and support staff from the Natural Environment Research Council (NERC), the Ministry of Agriculture, Fisheries and Food (MAFF - now DEFRA) and other academic institutes. The data are held at the British Oceanographic Data Centre and are available on CD-ROM.