Alternate title

GB001218

Date (Creation)

2014-01-14

Date (Publication)

2018-04-26

Citation identifier

EMODnetSeabedHabitats / GB001218

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Defra		open@defra.gsi.gov.uk	Owner
Natural England		enquiries@naturalengland.org.uk	Custodian

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes

http://inspire.ec.europa.eu/codelist/ReferenceHabitatTypeSchemeValue

• Eunis

Use limitation

┬® Defra. Data may be re-used under the terms of the Open Government Licence.

Use limitation

geossAttribution

Access constraints

Other restrictions

Other constraints

no limitation

Spatial representation type

Vector

Denominator

2000

Language

English

Topic category

• Biota
• Oceans

Begin date

2014-01-01

End date

2014-12-31

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 identifier

EPSG / WGS 84 (EPSG:4326) / 7.9

Topology level

Geometry only

Distribution format

Name	Version
ESRI Shapefile	1.0

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	http://randd.defra.gov.uk/Document.aspx?Document=12826_Dover_to_Deal_rMCZ_postsurvey_site_reportV7.pdf	Dover to Deal rMCZ site report
OGC:WMS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms?	gb001218
OGC:WFS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs?	gb001218
WWW:LINK-1.0-http--link	https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB001218.zip	EMODnet Seabed Habitats download

Hierarchy level

Dataset

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.

Metadata

File identifier

196e021d-842a-4d0e-9d0d-0d263b16785f XML

Metadata language

English

Character set

MD_CharacterSetCode_utf8

Hierarchy level

Dataset

Date stamp

2020-01-15T12:25:55

Metadata standard name

ISO19115

Metadata standard version

2003/Cor.1:2006

Metadata author

Organisation name	Individual name	Electronic mail address	Role
JNCC		HabitatMapping@jncc.gov.uk	Point of contact