FormaTerre
Coastal topo-bathymetric DTM of the Arcachon basin and its surroundings (HOMONIM Project)
The coastal topo-bathymetric DTM of the Arcachon basin and its surroundings at a resolution of 0.0002° (~ 20 m) was produced as part of the HOMONIM project.
The DTM covers the coastline of a part of the Gironde department, from the Carcans and Hourtin ponds in the North, to the Cazaux and Sanguinet lakes in the South.
It covers the entire Arcachon basin and extends offshore to about 40 m depth.
The DTM is intended to be implemented in hydrodynamic models in order to produce accurate forecasts of water heights and sea states at the coast and to improve the French storm surge warning system.
This product is available with the Lowest Astronomic Tide (LAT) or with the Mean Sea Level (MSL) as a vertical datum.
Simple
- Date (Creation)
- 2022-06-13
- Citation identifier
- http://www.shom.fr/BATHYMETRIE/MNT_COTIER_ARCACHON_20m_WGS84_ZNEG
- Presentation form
- Digital map
- Credit
-
©Shom
- Status
- On going
- Maintenance and update frequency
- Not planned
- Theme
-
-
bathymetry
-
digital elevation model
-
open data
-
Product
-
- Place
-
-
Bassin d'Arcachon
-
Arcachon
-
- Discipline
-
-
Geophysic
-
- Use limitation
-
Data may be freely used providing that the source is mentioned as follows "SHOM,2022. MNT topo-bathymétrique côtier du bassin d'Arcachon et ses abords (projet HOMONIM) http://dx.doi.org/10.17183/MNT_COTIER_ARCACHON_HOMONIM_20m_WGS84 ."
- Use limitation
-
Do not use for navigation
- Use limitation
-
Data may be freely used providing that the source is mentioned as follows "SHOM,2022. MNT topo-bathymétrique côtier du bassin d'Arcachon et ses abords (projet HOMONIM) http://dx.doi.org/10.17183/MNT_COTIER_ARCACHON_HOMONIM_20m_WGS84 ."
- Use limitation
-
Do not use for navigation
- Access constraints
- License
- Use constraints
- Other restrictions
- Other constraints
-
The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission.
- Access constraints
- Other restrictions
- Other constraints
- No public access restrictions.
- Classification
- Unclassified
- Spatial representation type
- Grid
- Distance
- 0.0002 dd
- Language
- Français
- Character set
- UTF8
- Topic category
-
- Elevation
))
Vertical extent
- Minimum value
- -47
- Maximum value
- 110
Vertical CS
Vertical datum
Vertical extent
- Minimum value
- -50
- Maximum value
- 108
Vertical CS
Vertical datum
- Unique resource identifier
- WGS 84 (EPSG:4326)
- Number of dimensions
- 2
- Dimension name
- Row
- Dimension size
- 2201
- Resolution
- 0.0002 dd
- Dimension name
- Column
- Dimension size
- 3701
- Resolution
- 0.0002 dd
- Cell geometry
- Area
- Transformation parameter availability
- No
- Distribution format
-
-
ArcGis Grid
(
inapplicable
)
-
BAG
(
inapplicable
)
-
GLZ
(
inapplicable
)
-
GRD
(
inapplicable
)
-
ArcGis Grid
(
inapplicable
)
- OnLine resource
-
Shom geoportal
(
WWW:LINK-1.0-http--link
)
Shom geoportal
- OnLine resource
- MNT_COTIER_ARCACHON_HOMONIM_20m_PBMA_3857_WMSR ( OGC Web Map Service )
- OnLine resource
- Download service LAT ( WWW:DOWNLOAD-1.0-http--download )
- OnLine resource
- Download service MSL ( WWW:DOWNLOAD-1.0-http--download )
- OnLine resource
-
Shom distribution space
(
WWW:LINK-1.0-http--link
)
Shom distribution space to download tiles
- Hierarchy level
- Dataset
Conformance result
- Date (Publication)
- 2013-12-10
- Explanation
-
Information on compliance with INSPIRE specifications for the Altitude theme.
- Pass
- Yes
Conformance result
- Date (Publication)
- 2010-11-23
- Explanation
-
Information on compliance with the Geographic Data Sets and Services Interoperability Regulation.
- Pass
- Yes
- Statement
-
In addition to the Shom data, the surveys of external organizations were exploited. Those contributors are the following:
IGN RGEALTI® V2.0
Direction Départementale des Territoires et de la Mer de la Gironde (bathymetric survey)
Syndicat Intercommunal du Bassin d'Arcachon (lidar survey 2016)
- Description
-
The main production tasks of this product line are based on 4 major axes each aiming at reducing the DTM uncertainties:
1) the collection, evaluation, pre-processing, and selection of data from multiple sources whose acquisition is from different sensors and time periods;
2) homogenization of the vertical and horizontal reference of the data sets;
3) the use of interpolation algorithms adapted to the heterogeneous distribution and variable density of the data, and
4) the evaluation and qualification of the final product and the elaboration of its documentation
- File identifier
- MNT_COTIER_ARCACHON_HOMONIM_20m_WGS84_ZNEG.xml XML
- Metadata language
- Français
- Character set
- UTF8
- Hierarchy level
- Series
- Date stamp
- 2022-09-09T09:36:02
- Metadata standard name
-
ISO 19115:2003/19139
- Metadata standard version
-
1.0
Overviews
Spatial extent
Provided by
