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Nitrogen concentrations in sediment

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From 1 - 10 / 17
  • This report contains heavy metal concentrations (As, Ba, Cr, Cu, Cd, Fe, Hg, Pb, Mn, Ni, Sr, V and Zn) and sedimentological characteristics (particle-size analysis) which were determined in respectively 61 and 68 samples for the Atlantic margin Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment (SEA4) . A spreadsheet of data is available.

  • This data report contains the results of the analysis of sediment samples collected by Geotek on behalf of the Department of Trade and Industry (now Department of Energy and Climate Change) as part of the Strategic Environment Assessment SEA1 (White Zone) environmental sampling programme conducted from RRS Charles Darwin in summer 1999 (cruise 119C leg 2). The analyses undertaken includes total organic carbon and total organic nitrogen, particle size distribution (including silt, clay, silt/clay, carbonate and organic matter content), total and aliphatic hydrocarbon content); 2 to 6 ring polynuclear aromatic hydrocarbons (PAH) content and metal oxides and heavy metal content.

  • This report is a contribution to the Strategic Environmental Assessment (SEA6) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). This report contains heavy metal concentrations (As, Ba, Cr, Cu, Cd, Fe, Hg, Pb, Mn, Ni, Sr, V and Zn) and sedimentological characteristics (particle-size analysis) which were determined in respectively 61 and 68 samples for the Atlantic margin Strategic Environmental Assessment (SEA6) campaign. A spreadsheet of data is included.

  • Sediment samples were collected during the Strategic Environmental Assessment SEA1 (White Zone) Environmental Survey in 2000 at the request of the Department of Trade and Industry (now Department of Energy and Climate Change). This data report collates all the results generated by Gardline Survey Limited. The analysis undertaken on the sediment samples were: total organic carbon and total organic nitrogen; total hydrocarbon and n-alkane content and polycyclic aromatic hydrocarbons (PAH) content.

  • This report present the data obtained from the analysis of sediment samples collected during survey operations for the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment programme (SEA7), carried out in August/September 2005. Samples were analysed for: Total organic carbon and nitrogen; Particle size analysis; Hydrocarbons and polynuclear aromatic hydrocarbons; Trace and heavy metals. A spreadsheet of data is included.

  • 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.

  • As part of Strategic Environmental Assessment SEA1, sediment samples were collected at the request of the Department of Trade and Industry (now Department of Energy and Climate Change) from Charles Darwin between July and September 2000. Samples for a number of chemical and biological analyses were collected. The analysis undertaken on the sediment samples collected were: total organic carbon and total organic nitrogen; total hydrocarbon and n-alkane content; and 2 to 6 ring polynuclear aromatic hydrocarbons (PAH) content. Excel files containing the data are also available.

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    The Marine Environment Monitoring and Assessment National database (MERMAN) is a national database which holds and provides access to data collected under the Clean Safe Seas Environmental Monitoring Programme (CSEMP) formerly the National Marine Monitoring Programme (NMMP). The data collected are the responsibility of the Competent Monitoring Authorities (CMAs) who collect the samples from stations in UK waters using water sampling techniques, trawls, nets or grabs. The CMAs then send the collected samples to accredited laboratories where they are analysed. A weighting is calculated, based on the quality of the analysis. The weighting score incorporates the laboratory accreditation, reference material, inter-laboratory comparisons, detection limits, uncertainties and standard deviations. Where data do not meet a threshold score they are given a status of ‘FAIL’ and although they are stored they are not made available to external users. The MERMAN contaminants and biological effects in sediment data start in 1987 with greater use of the database occurring from 1997 onwards. Data are submitted by the CMAs annually and an annual submission may include updates to legacy data to provide additional data or improve data/metadata. The data held in MERMAN fulfils the UK's mandatory monitoring requirements under the Oslo and Paris Convention (OSPAR) Joint Assessments and Monitoring Programme (JAMP). These data are used in support of European Commission (EC) directives and national assessments, such as Charting Progress 2 and are also supplied to the European Marine Observation and Data Network (EMODNET).

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    The dataset contains hydrographic, biogeochemical and biological measurements of ocean and seabed sediment properties. Hydrographic profiles provided measurements of temperature, salinity, dissolved oxygen and fluorescence to accompany biogeochemical and biological samples, including concentrations of nutrients, particulate organic carbon (POC) and particulate organic nitrogen (PON). Emphasis was placed on the collection of benthic data, with numerous core samples being collected and analysed for pigments, biomarkers, lipids and other organic compounds. Samples were also collected and analysed for Holothurian species, while a large volume in situ filtration system was used to measure biogeochemical variables including POC and PON, and particulate iron. Station data were supplemented by continuous underway measurements of bathymetry, current velocities, sea surface salinity, temperature, fluorescence and beam attenuation across the survey area. These were accompanied by underway measurements of surface meteorological parameters including irradiance, air temperature, humidity, sea level pressure and wind velocities. The data were collected across the Crozet Plateau in the Southern Indian Ocean between 1st December 2005 and 14th January 2006 on RRS Discovery cruise D300. Data collection focused on four sites, with repeated hydrographic profiles, water and sediment samples collected at each location. In total, 89 instrumentation deployments were carried out at the four stations, including a conductivity-temperature-depth (CTD) package and a Megacorer (for sediment sampling). The underway system utilised a hull-mounted acoustic Doppler current profiler (ADCP) as well as a thermosalinograph and other standard surface hydrographic and meteorological instruments. Further data were collected using a variety of equipment including an otter trawl (net) and submersible cameras but these data are currently held by the data originators and are undergoing processing so are not included in the parameter and instrument lists above. The principal objective of Benthic CROZEX was to assess the manner in which biogeochemical composition and flux of organic matter to the deep-sea floor drives benthic community structure, dynamics and diversity at sites with contrasting primary production regimes. Investigators from British Antarctic Survey (BAS), Natural History Museum (NHM), National Oceanographic Centre (NOC) and the National University of Ireland, Galway (NUIG) were involved. Data management is being undertaken by the British Oceanographic Data Centre (BODC) but data processing is ongoing and various data are yet to be submitted to BODC.

  • Categories  

    The dataset comprises physical, biogeochemical and biological oceanographic, surface meteorological and benthic measurements. Hydrographic profiles including temperature, salinity, fluorescence, transmissance and suspended sediment concentration were collected at numerous stations, while surface hydrographic (fluorescence, transmissance, sea surface temperature, salinity) and meteorological (irradiance, air temperature, humidity, wind speed/direction) data were collected across the survey areas. Sediment, pore water and water column samples were also collected for biogeochemical analysis, as were biological samples for the purposes of species classification and abundance analyses. The data were collected across the Indian Ocean, Arabian Sea and Pakistan margin areas between March and October 2003. Data collection was undertaken by the RRS Charles Darwin during four cruises: CD145 (12 March 2003 to 9 April 2003), CD146 (12 April 2003 to 30 May 2003), CD150 (22 August 2003 to 15 September 2003) and CD151 (17 September 2003 to 20 October 2003). Conductivity-temperature-depth (CTD) profilers with auxiliary sensors, benthic samplers and nets were deployed from the ship, while underway sensors provided continuous surface ocean, meteorological and bathymetric data. The study was designed to investigate an oxygen-minimum zone (OMZ) in the northern Arabian Sea. Chief Investigators include Gregory L Cowie (University of Edinburgh School of GeoSciences) and Brian J Bett (Southampton Oceanography Centre), while other institutions including the Dunstaffnage Marine Laboratory, University of Liverpool and Netherlands Institute of Ecology were also involved in the research. Data management is being undertaken by BODC. Some of the data are still undergoing processing at BODC and further data are expected from originators in the future.