Broadscale habitat (EUNIS level 3) for the Dover to Deal recommended Marine Conservation Zone (rMCZ)
Broadscale habitat (EUNIS level 3) for the Dover to Deal recommended Marine Conservation Zone (rMCZ).Seabed texture polygons mapped using expert interpretation of acoustic data (MBES bathymetry and backscatter) and groundtruthing data from PSA analysis and image (stills and video).
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Alternate title | GB001218 |
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Date | 2014-01-14 |
Date type | Creation: Date identifies when the resource was brought into existence |
Date | 2018-04-26 |
Date type | Publication: Date identifies when the resource was issued |
Unique resource identifier | GB001218 |
mdConstraintsSection
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Point of contact
Organisation name | Defra |
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Electronic mail address | open@defra.gsi.gov.uk |
Role | Owner: Party that owns the resource |
Point of contact
Organisation name | Natural England |
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Electronic mail address | enquiries@naturalengland.org.uk |
Role | Custodian: Party that accepts accountability and responsability for the data and ensures appropriate care and maintenance of the resource |
Descriptive keywords
GEMET - INSPIRE themes, version 1.0 | |
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http://inspire.ec.europa.eu/codelist/ReferenceHabitatTypeSchemeValue | Eunis |
GDI-Vlaanderen Trefwoorden | Metadata GDI-Vl-conform |
Spatial representation type | Vector: Vector data is used to represent geographic data |
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Spatial resolution
Denominator | 2000 |
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Language | English |
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Topic category code |
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Supplemental Information | Colenutt, A., Grewcock, G., Evans, J. (2015) Dover to Deal rMCZ Post-survey Site Report. Defra Contract Reference: MB0120. Report Number: 9. Version 7. Available from: http://randd.defra.gov.uk/Document.aspx?Document=12826_Dover_to_Deal_rMCZ_postsurvey_site_reportV7.pdf |
Reference System Information
Unique resource identifier | WGS 84 (EPSG:4326) |
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Codespace | EPSG |
Hierarchy level | Dataset: Information applies to the dataset |
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Lineage
Statement | Existing multibeam bathymetry data were used to assist in the planning of surveys and interpretation of seabed habitats. The data were collected between 12th July and 10th September 2010 as part of the Southeast Regional Coastal Monitoring Programme's swath bathymetry survey. The bathymetric data were collected and processed in accordance with the International Hydrographic Organisation (IHO) Standards for Hydrographic Surveys-Order 1a (Special Publication 44, Edition 4). The bathymetry data are also archived by the United Kingdom Hydrographic Office (UKHO). The data were provided to Cefas as fully processed and cleaned bathymetry data. Raw backscatter data, supplied by NetSurvey, were processed by the Channel Coastal Observatory (CCO). Both bathymetry and backscatter were gridded at 1 m resolution for analysis. Further details on the acquisition and processing of multibeam bathymetry data can be found in the Report of Survey for HI1341 and HI1342 (UKHO, 2011). Ground truth samples were collected during the Cefas-commissioned groundtruthing survey undertaken by the Environment AgencyÔÇÖs Marine Monitoring Service (MMS). These data were used in combination with collated information provided to CCO from British Geological Survey (core record) and Kent Wildlife Trust (Seasearch stills and video images) to interpret broadscale seabed habitats (Kinnear et al., 2011). No sediment samples were collected as part of the SRCMP survey. The spatial location and descriptions of these groundtruthing data and information were used in conjunction with the bathymetry and backscatter datasets. Such information aided interpretation of areas of rock, sediment and areas where the surficial topographic expression of the underlying bedrock appeared to be masked by a variable thickness of sediment. From the visual descriptions of surficial substrate the broadscale EUNIS habitat types were classified. The sediment samples collected by MMS were analysed (using a simplified and unified Folk classification following Long (2006)), which enabled an iterative interpretation of habitat types to be conducted. The bathymetric dataset collected by the SRCMP, which covers the extent of the rMCZ area, was gridded at a 1 m resolution. All new maps and their derivatives have been projected to WGS84 and Chart Datum. An indicative broadscale habitat map for the site was produced by analysing and interpreting the available acoustic data collected through the SRCMP, and the additional groundtruthing data collected through the Cefas-commissioned survey of this site. IVS Fledermaus v7.3 was used to load the bathymetry data and export the ASCII format files as a single layer for subsequent use in ArcGISv10. The Spatial Analyst toolbox within ArcGIS enables slope, aspect and hillshade layers to be derived, asdetailed in Table 3. Areas with different acoustic signatures and characteristics were identified and digitised, and information from the particle size analysis and qualitative groundtruthing data was used to assign substrate descriptions and sediment types. A broadscale habitat map of the rMCZ area has been created through expert visual interpretation of the processed bathymetry, backscatter and groundtruthing data and their derivatives. |
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Distribution format | ESRI Shapefile (Version: 1.0) | ||||||||||||||||||||||||||||||||||||||
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File identifier | 196e021d-842a-4d0e-9d0d-0d263b16785f | ||||||
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Metadata language | English | ||||||
Character set | MD_CharacterSetCode_utf8: MD_CharacterSetCode_utf8 | ||||||
Hierarchy level | Dataset: Information applies to the dataset | ||||||
Date stamp | 2020-01-15T12:25:55 | ||||||
Metadata standard name | ISO19115 | ||||||
Metadata standard version | 2003/Cor.1:2006 | ||||||
Contact
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Overviews
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Associated resources
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