CEFASbf084098-5b8a-4ee5-ad71-cd31d333a29b English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2023-02-09T01:14:36 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 North Sea Sediment Pigment and Porosity Analysis 2014-06-13 publication 2023-02-09 revision 2014-03-10 creation CEFAS3072 https://data.cefas.co.uk Measurements of chlorophyll a concentration and porosity in sediment samples collected by box core from a range of soft sediments in the North Sea on three Cefas surveys. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor Department for Environment, Food and Rural Affairs (DEFRA) defra.helpline@defra.gov.uk owner notPlanned Biochemistry Advice Analysis Management Monitoring Sea bed Sediment GEMET, version 1.0 2008-06-01 publication Chlorophyll pigment concentrations in the water column Sediment water content, porosity and surface area SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Pigments SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Sediment SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Public data - no limitations to reuse English environment -4.00 11.00 50.50 58.00 2001-10-11 2003-07-20 Delimited Unknown https://data.cefas.co.uk/view/3072 Cefas Data Portal download The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: CSV. dataset INSPIRE Data Specification on Habitats and Biotopes – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification Surveys undertaken ob RV Corystes, codes CORY 10/2001, CORY 09/2002 and CORY 8x/2003. Porosity is the fraction of void space in a material. Here the material is sediment and the voids between the sediment grains are filled with seawater. Porosity (symbol Φ, phi) is expressed as the volume of the void divided by the volume of the whole sample, so is given as a fraction between 0 and 1. Intact sediment cores were sliced in 1 cm horizons to a depth of 20 cm. Porosity was calculated using the dry weight and wet weight of known volumes of sediment, assuming a sediment particle density of 2.7 g cm3 and a seawater density of 1.035 g cm3. Chlorophyll concentration was determined by fluorometry, following a standard operating procedure. MEDIN 3.1.1