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Physical environment - Modelled depth data (bathymetry plus sea level)
Depth is here bathymetry plus mean sea level. It adds the bathymetry raster to that of mean sea level. Depth is more relevant than bathymetry alone for ecological point of view. Used as layer for habitat
Simple
- Alternate title
- SHOM-IFR_environment_model
- Date ( Publication )
- 2009-12-31T00:00:00
- Identifier
- CHARM_SHOMIFR_BATHY_R
- Presentation form
- Digital map
- Other citation details
- Source CHARM Consortium
- Credit
- SHOM / IFREMER
- Credit
- CHARM consortium
- Status
- Completed
- Maintenance and update frequency
- As needed
- Thèmes Sextant ( Theme )
-
- /Physical Environment/Physical Habitats
- Keywords ( Discipline )
-
- Oceanography
- CHARM
- GEMET - INSPIRE themes, version 1.0 ( Theme )
-
- Altitude
- external.theme.gemet ( Theme )
-
- modèle terrestre numérique
- océanographie
- Use limitation
- research-only
- Access constraints
- License
- Other constraints
- Has to be cited this way in maps : "Source CHARM Consortium"
- Other constraints
- Has to be cited this way in bibliography : "Carpentier A, Martin CS, Vaz S (Eds.), 2009. Channel Habitat Atlas for marine Resource Management, final report / Atlas des habitats des ressources marines de la Manche orientale, rapport final (CHARM phase II). INTERREG 3a Programme, IFREMER, Boulogne-sur-mer, France. 626 pp. & CD-rom"
- Spatial representation type
- Grid
- Denominator
- 1000
- Metadata language
- fr
- Metadata language
- en
- Character set
- UTF8
- Topic category
-
- Oceans
- Environment description
- Microsoft Windows XP ; ESRI ArcGIS 9.x
- Geographic identifier
- Eastern English Channel
N
S
E
W
))
- Reference system identifier
- 4326
Distributor
- OnLine resource
-
CHARM web site
(
WWW:LINK
)
CHARM web site
- Protocol
- COPYFILE
- Name
- Depth
- Description
- Depth
- OnLine resource
- CHARM_SHOMIFR_BATHY_R ( OGC:WMS )
- Hierarchy level
- Dataset
- Statement
- Bathymetric data (or zero level, or low tide, corresponding to a tidal coefficient of 120) were derived from SHOM navigation charts. A regular square grid of 1.8 km² resolution, approximately corresponding to the English Channel, was obtained. Mean sea level (or mid-tide, corresponding to a tidal coefficient of 70) was estimated with the MARS 3D hydrodynamic model (Le Roy & Simon, 2003). This model solves equations of Saint-Venant type, to estimate mean current and the position of the free surface of the sea. This model is built on the basis of a regular square grid using sigma coordinates (with the same number of layers across the study area) and is applicable to an area extending from the Lizard Point to the north of the Rhine river on the continent.
- Description
- The regular grids obtained for bathymetric data and mean sea level were interpolated using ArcMap to create continuous raster layers of 1 km² resolution. The bathymetric and mean sea level raster layers were then summed by using ArcMap's Raster Calculator extension to create the depth layer, that is to say the layer of bathymetry plus mean sea level. Finally, the resulting layer was cut to the size of CHARM's study area using ArcMap's Raster Calculator extension.
- Description
- SHOM (Service Hydrographique et Océanographique de la Marine) and IFREMER (Institut Français de Recherche pour l'Exploitation de la MER).
- File identifier
- b8863996-5b80-4357-97e2-5638364d2a23 XML
- Metadata language
- en
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2020-06-04T00:43:35
- Metadata standard name
- ISO 19115:2003/19139 - SEXTANT
- Metadata standard version
- 1.0
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available