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Sediment grain size parameters

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  • This report pertains to samples collected for the UK Department of Trade and Industry (now Department of Energy and Climate Change) as part of Strategic Environmental Assessment SEA1 (White Zone) from west of the Shetland Islands by Geotek Ltd from the RRS Charles Darwin during the summer of 2000. This report is the product of statistical analyses on grain size data of 109 seabed samples.

  • This report is the product of the laboratory analyses carried out on sediments collected on the MV Kommandor Jack during the summer or 2001 as part of Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment SEA2. The results of the analyses include tables and curves from the samples collected from the southern North Sea, the associated distribution curves, results of the analyses of the fine-grained samples collected from the northern North Sea, and the results of the Loss on Ignition analysis. An Excel data file is also available.

  • This report is a contribution to the Strategic Environmental Assessment (SEA7) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). Investigations of the hydrocarbon prospectivity and earthquake activity include the whole of SEA7 but in this report investigations of the sea-bed sediments are restricted to the Hebrides Shelf, Rockall Trough and east Rockall Bank. On the Hebrides Shelf, Hebrides Slope, east Rockall Bank and in the deep-water Rockall Trough the modern sea-bed sediments are mainly composed of mixtures of former glacial deposits and grains of modern interglacial biogenic carbonate shell. Former glacial deposits and modern biogenic carbonate are now mainly mixed and transported by wave-orbital currents and residual currents on Rockall Bank and by combinations of wave-orbital currents, tidal currents and residual currents on the Hebrides Shelf and upper Hebrides Slope. Below approximately 300 metres water depth in the Rockall Trough the sea-bed sediments are mainly transported by circulating deep-water residual currents.

  • This report is a contribution to the Strategic Environmental Assessment (SEA5) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). This report reviews published and newly-acquired seabed geological data in an area of 78,000 square kilometres extending from the coast to more than 200 m water depth to the east of the British Isles. While it can be argued that the modern environment is a product of past environmental conditions, the basis for the review is also that our understanding of the modern environment can be significantly improved if new techniques, data and ideas are applied to a revision of the existing research knowledge. The purpose of the review is to place the characteristics of the seabed features that were surveyed by the DTI in 2003, and the processes forming them, into an improved understanding of their historical, local and regional context. In this way a strong element of the review is to include the results from exploration and discovery. The survey data included multibeam, sidescan sonar, seismic-reflection profiles, sea floor photographs and samples.

  • As part of the Department of Trade and Industry (now Department of Energy and Climate Change) Strategic Environmental Assessment project for Area 5 (SEA5) an environmental survey was carried out in the North Sea (Moray Firth, Southern Trench, Sandy Riddle, Pobie Bank, Braer Study Area, Fair Isle, Papa and Turbot Banks, Smith Bank and JONSIS Transect). The aim of the survey was to acquire biological, physical, and chemical sediment samples together with video and digital stills photography to groundtruth the geophysical data and to enable a general characterisation of seafloor habitats and community types present within a number of offshore areas. A report is available which provides an overview of the field sampling work undertaken. 565 samples were collected. 47 videos are available. 1073 photographs are available

  • This report is a contribution to the Strategic Environmental Assessment (SEA5) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). This report describes the results of particle size and organic content analysis on samples obtained during the 'Biology' Leg of the SEA5 programme (RV Jean Charcot, September 17th - October 8th 2003; Outer Moray Firth and Northern North Sea). 216 samples sediment samples where analysed for particle size distribution and organic content. Standard geological methods were used to derive the following: percent total carbon, percent nitrogen, percent carbonate, percent organic material, particle size distribution and mud:sand:gravel ratio. Data are summarised within an Excel spreadsheet.

  • Seabed sampling with video and digital stills photography; Moray Firth, Southern Trench, Sandy Riddle, Pobie Bank, Braer Study Area, Fair Isle, Papa and Turbot Banks, Smith Bank and JONSIS Transect. This report forms the second of two reports relating to 2 research cruises undertaken on behalf of the Department of Trade and Industry (now Department of Energy and Climate Change) during the Strategic Environmental Assessment 5 (SEA5). Data were collected by the RV Kommandor Jack during the period September 17th - October, 8th, 2003. The report describes the collection of a variety of benthic sediment samples for the analysis of particle size, hydrocarbon and heavy metal content, and benthic fauna composition. These were collected in order to enable groundtruthing and interpretation of the various geophysical data-sets collected during the first cruise. In addition, marine video surveying techniques were used to photograph parts of the seabed.

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    This dataset consists of optical and acoustic seabed profiles of near bed hydrodynamics, bed morphology and suspended material in the water. Fieldwork was carried out by a team of researchers over a two week period, 24 May to 04 June 2013, surveying an area near Hilbre Island in the Dee Estuary. Measurements were taken in the inter-tidal and sub-tidal zones. Measurements were collected at three sites within the sampling area. A SEDbed suite of acoustic and optical instruments were deployed at each station to collect data. These instruments included CTD, LISST, Acoustic Doppler Velocimeter, Bedform and suspended sediment imager, Multi-tier sediment trap and 3-D Acoustic Rippler Profiler. The data collection described formed the fieldwork component of the NERC-funded project “Realistic Sedimentary Bedform Prediction: Incorporating Physical and Biological Cohesion (COHBED)”. The project was undertaken with the aim to produce information about the growth, movement and stability of bedforms that consist of natural mixtures of sands and muds. The project was composed of Standard Grant reference NE/I027223/1 as the lead grant with child grants NE/I026863/1, NE/I024402/1, NE/I02478X/1. The lead grant runs from 05 January 2012 to 04 July 2015 and the child grants run from 15 December 2011 to 14 June 2015 (NE/I026863/1), 01 January 2012 to 30 June 2015 (NE/I024402/1), and 01 January 2012 to 31 October 2015 (NE/I02478X/1). Dr Jacobus Hugo Baas of Bangor University, School of Ocean Sciences was the principal investigator of the lead grant of this project. The child grants were led by Dr Sarah Bass of University of Plymouth, School of Engineering, Professor Daniel Roy Parsons of University of Hull, Geography, Environment and Earth Science, and Professor Daniel Paterson of University of St Andrews, Biology, respectively. The data described here have been received as raw files by BODC and will be processed using our in-house systems and made available online in the future.

  • As part of the Department of Trade and Industry's (now Department of Energy and Climate Change) 1999 Strategic Environmental Assessment SEA1 (White Zone) Environmental Survey: Seabed survey of the deep-waters to the north and west of Scotland. The aims were to : Complete TOBI sidescan sonar survey of the "White Zone" begun on RRS Charles Darwin cruise 119C leg A; To carry out photographic surveys of the "White Zone" to ground truth the sidescan sonar imagery and provide an assessment of the seabed fauna; To carry out seabed sampling to further ground truth the sidescan sonar imagery and generate samples for the future analysis of selected environmental parameters (hydrocarbons, elements, particle size). 39 samples were collected. Raw TOBI Bathymetry - includes sidescan sonar, sub-bottom profiler and magnetometer data and Mosaiced TOBI sidescan imagery are available. The survey report is also available. The preliminary report describes the data collection and interpretation carried out by Southampton Oceanography Centre in the summer of 1999 on behalf of the DTI. The areas surveyed were in unlicensed parts of the UKCS NW of Scotland, and the purpose of the work was to obtain regional environmental information. The work was carried out in two survey legs, Leg A was a regional side-scan sonar survey, whilst leg B was a seafloor survey of targets selected from the results of leg 1. This report is presented in 4 sections: Section 1 - Cruise report for Leg A; Section 2 - Cruise report for Leg B; Section 3 - Regional environmental interpretation from side-scan sonar and camera data; Section 4 - Initial environmental assessment.

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    The Marine Ecosystems Research Programme (MERP) dataset consists of pelagic and benthic taxonomic data with supporting data such as sediment size and satellites ocean colour or productivity in UK waters (Celtic Sea, Irish Sea, North Sea and the English Channel). Data were obtained from cruises beginning in April 2014, using a variety of methods such as BONGO nets, trawls, dredges and grabs. These data were used alongside and in various models. MERP addresses key knowledge gaps in marine ecosystem research. The programme developed a more accurate suite of marine ecosystem models providing vital evidence, tools and advice to policy makers and environmental managers, including the development and implementation of the Marine Strategy Framework Directive (MSFD), the Marine and Coastal Access Act, Marine (Scotland) Act, Common Fisheries Policy and the OSPAR Joint Assessment and Monitoring Programme as well as the work of UK government departments. MERP research supports an ecosystem approach to policy, regulatory and management initiatives. MERP was formerly known as Integrating Macroecology and Modelling to Elucidate Regulation of Services from Ecosystems (IMMERSE) and the WP2 Developing a model based understanding of ecosystem service regulation grants. MERP was created when two grants were combined to make an overarching programme. The MERP consortium includes a blend of early and mid to late career researchers united by large-scale thinking and a multidisciplinary approach. The following partners were involved in the programme: Bangor University, Centre for Ecology and Hydrology, Centre for Environment, Fisheries and Aquaculture Science, National Oceanography Centre, Plymouth Marine Laboratory, Queen Mary University of London, Queens University Belfast, Scottish Association for Marine Science, Sir Alister Hardy Foundation for Ocean Science, University of Glasgow, University of Sheffield and the University of Strathclyde.