• Catalogue Shom
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  Coastal topo-bathymetric DEM for the Pertuis of Charente(HOMONIM project)

The update of the coastal topo-bathymetric DEM of the Pertuis charentais at a resolution of 0.0002° (~ 20 m) was carried out in the third phase of the HOMONIM project.

The DEM extends from the terrestrial domain to about 60 meters depth over all the pertuis (pertuis Breton, pertuis d’Antioche and pertuis of Maumusson).

The DEM is intended to be implemented in hydrodynamic models in order to produce forecasts as accurate as possible of water heights and sea states at the coast to improve the relevance of the Wave-Submergence Vigilance.

This product is available with either the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical reference.

 
Citation proposal
Shom. Coastal topo-bathymetric DEM for the Pertuis of Charente(HOMONIM project). https://services.data.shom.fr:/geonetwork/srv/api/records/MNT_COTIER_PERTUIS_HOMONIM_20m_WGS84.xml
 

Simple

Date ( Revision )
2022-06-13
Edition

Edition 2.0

Identifier

http://www.shom.fr/BATHYMETRIE/MNT_COTIER_PERTUIS_HOMONIM_20m_WGS84

Presentation form
Digital map
Credit

©Shom

Status
On going

  Author

Shom  

Maintenance and update frequency
Not planned
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Altitude
Keywords ( Theme )
  • Bathymetry

  • Digital Elevation Model

  • Open data

  • Product

Keywords ( Place )
  • Pertuis Charentais

  • Golfe de Gascogne

Keywords ( Discipline )
  • Geophysic

High-value dataset categories
  • Observation de la terre et environnement
Use limitation

Data may be freely used providing that the source is mentioned as follows : "Shom,2022. MNT topo-bathymétrique côtier des Pertuis Charentais (HOMONIM project). http://dx.doi.org/10.17183/MNT_COTIER_PERTUIS_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 des Pertuis Charentais (HOMONIM project). http://dx.doi.org/10.17183/MNT_COTIER_PERTUIS_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
Pas de restriction d'accès public. No public access restrictions.
Classification
Unclassified
Spatial representation type
Grid
Distance
0.0002  dd
Metadata language
fre French
Character set
utf8 UTF8
Topic category
  • Elevation
N
S
E
W


Vertical extent

Minimum value
-58
Maximum value
62

Vertical CS

No information provided.

Vertical datum

No information provided.

Vertical extent

Minimum value
-61
Maximum value
59

Vertical CS

No information provided.

Vertical datum

No information provided.
Number of dimensions
2
Dimension name
Row
Dimension size
3501
Resolution
0.0002  dd
Dimension name
Column
Dimension size
3751
Resolution
0.0002  dd
Cell geometry
Area
Transformation parameter availability
false
Distribution format
  • ArcGis Grid

    (

    inapplicable

    )

  • BAG

    (

    inapplicable

    )

  • GLZ

    (

    inapplicable

    )

  • GRD

    (

    inapplicable

    )

  Distributor

Shom  

OnLine resource
Shom geoportal  

Shom geoportal

OnLine resource
MNT_COTIER_PERTUIS_HOMONIM_20m_PBMA_4326_WMSR  

Access point / WMS DEM LAT

OnLine resource
Download service LAT  
OnLine resource
Download service MSL  
OnLine resource
Shom distribution space  

Shom distribution space to download DEMs

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2013-12-10
Explanation

Information on compliance with INSPIRE specifications for the Altitude theme.

Pass
true

Conformance result

Date ( Publication )
2010-11-23
Explanation

Information on compliance with the Geographic Data Sets and Services Interoperability Regulation.

Pass
true
Statement

In addition to the Shom data, the surveys of external organizations were exploited. Those contributors are the following :

Délégation à la Mer et au Littoral de la Vendée

DDTM de Charente-Maritime

Grand Port Maritime de Bordeaux

Grand Port Maritime de La Rochelle

IGN (RGEALTI® V2.0)

Laboratoire Central d'Hydraulique de France

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

gmd:MD_Metadata

File identifier
MNT_COTIER_PERTUIS_HOMONIM_20m_WGS84.xml   XML
Metadata language
fre French
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2023-06-29T14:06:07
Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

  Point of contact

Shom  

13 rue du Chatellier

BREST

29200

France


 
 

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MNT_COTIER_PERTUIS_HOMONIM_20m_WGS84.xml   Access to the portal Read here the full details and access to the data.

  Associated resources

Not available


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