CEFASc68e93a7-83bd-4dba-a7a9-2564504f4733 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 2024-07-24T11:37:18 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 / UTM zone 29N Seabed mapping data from remote sensing and groundtruth samples taken at East of Haig Fras Marine Conservation Zone from 2012 to 2015 2020-07-03 publication 2024-07-24 revision 2020-06-17 creation CEFAS20666 https://data.cefas.co.uk Remotely sensed variables and ground truth samples were distributed as part of a seabed mapping exercise. This holding contains the four raster layers provided to all participants for the East of Haig Fras MCZ and the groundtruth samples. These four rasters are: Multibeam echosounder bathymetry, multibeam echosounder backscatter, modelled maximum current velocity at the seabed and modelled mean current velocity at the seabed. All rasters are in UTM29N projection at a 2 m x 2 m resolution. The groundtruth samples were derived from drop camera still images of rock substrate and sediment substrate samples were derived from grabs classified using Particle Size Analysis. Groundtruth samples contain the field "Test". Test values of 0 were used to train the models and values of 1 were withheld from all analysts as an independent test set. 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 Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) data.manager@cefas.co.uk owner Department for Environment, Food and Rural Affairs (DEFRA) defra.helpline@defra.gov.uk owner notPlanned Acoustics Currents SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Bathymetry and Elevation Sediment grain size parameters SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Sea bed Sediment GEMET, version 1.0 2008-06-01 publication Oceanographic geographical features 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 Publicly available data licensed under the Open Government Licence v3.0 ( `https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)`_ – Please note the applicable attribution statement is as follows: ‘includes Crown copyright, Cefas [2022]' .. _`https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)`: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ 2 English oceans -7.50 -6.50 50.00 50.75 2012-07-31 2015-12-31 Binary Unknown https://data.cefas.co.uk/view/20666 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: Binary download. dataset INSPIRE Data Specification on Oceanographic geographical features – 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 Multibeam echosounder data were acquired during the UK MPA programme in 2012. Currents velocity data were modelled in 2019 using a Telemac 2D model. Groundtruth samples were acquired over three separate surveys by Cefas aboard the RV Cefas Endeavour. Samples were subsequently filtered for the purposes of examining different seabed mapping approaches. This dataset includes only those samples relevant to the different substrate classes having also applied a minimum distance between samples. Data is as presented to the participants in the mapping exercise described in "`Limitations of predicting substrate classes on a sedimentary complex but morphologically simple seabed`_" (Open Access). .. _`limitations of predicting substrate classes on a sedimentary complex but morphologically simple seabed`: https://doi.org/10.3390/rs12203398 MEDIN 3.1.1