• Catalogue Shom
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  Distribution of dunes over the French continental shelf

This product includes a map of the peaks of around 3,000 submarine dunes entered using bathymetric surveys by Shom. Each dune is marked out by a line showing its peak summit. Dune locations are precise to between 1 m (MBES data from the 2000-2010 period) and a dozen metres (data acquired prior to 2000 using a side sonar). The precision of the carrier location, the acquisition system and the MBES resolution (the distance between the systems acquired) also affect map precision. Submarine dunes can move at the rate of a few metres per year, but can also exceed 30 m/year. The precision of dune positions will therefore decrease with the age of the measurement.

 
Citation proposal
Shom (2013) . Distribution of dunes over the French continental shelf. https://services.data.shom.fr:/geonetwork/WS/api/records/HOM_GEOL_DUNES_V1_1.xml
 

Simple

Date ( Publication )
2013-11-20
Edition

V1.1

Identifier

http://www.shom.fr/HOM/GEOL_DUNES_V1_1

  Author

Shom  

13 rue du Chatellier

BREST

29200

France


Maintenance and update frequency
As needed
Maintenance note

Les nouvelles acquisitions à la mer et les levés des autres régions seront intégrés progressivement dans le cadre des mises à jours annuelles.

Keywords ( Theme )
  • geology

  • dunes

GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Geology
Use limitation

Fees apply to user rights for this data. A specific contract must be signed for the commercial re-use of data.

Use limitation

Do not use for navigation

Use limitation

Fees apply to user rights for this data. A specific contract must be signed for the commercial re-use of data.

Access constraints
Restricted
Use constraints
Restricted
Access constraints
Other restrictions
Other constraints

Fees apply to user rights for this data. A specific contract must be signed for the commercial re-use of data. https://diffusion.shom.fr/pro/ressources/courants-de-maree.html

Classification
Unclassified
Spatial representation type
Vector
Denominator
10000
Metadata language
fre French
Character set
utf8 UTF8
Topic category
  • Oceans
N
S
E
W


Supplemental Information

SEach dune is identified by: - DuneCodes: a dune identification number (e.g. 20050020054), consisting of the date of the survey (the first four figures), the survey reference for the year (the next 3 figures), the dune number (the next 4 figures); - Source: reference code linking to the source data - DUNE_clas: dune classification by depth based on the following classes: 0-5 m, 5-10 m, 10-15 m, 15-20 m, 20-25 m, 25-30 m; - DUNE_dir: the direction indicates the direction of travel of the dune. Values are shown moving anti-clockwise (ArcGIS codes). E.g. DUNE_dir = 270 means that the dune is moving east). The value -1 means that no measurement is available for this parameter; - DUNE_WL: WL is the wavelength for the dune, i.e. its width (maximum distance between the dune bases) at its peak, or the distance between two peaks for dune fields. This information is not available in this initial version; - DUNE-date: date of the bathymetric survey for the dune, or the last survey date by default; - SysAcquis: name of the acquisition system used; - DUNE_H: Depth of the dune at its peak in metres. This parameter is equal to the difference between the depth of the highest point and the depth of the base of the short limb of the dune. The value -1 means that no measurement is available for this parameter.

Distribution format
  • Shape

    (

    inapplicable

    )

  • GML

    (

    3.2

    )

  Point of contact

Shom  

OnLine resource
Shom Geoportal  

Shom Geoportal

OnLine resource
GE.GeomorphologicFeature.Natural.SubMarineDunes  

Access Point

OnLine resource
DUNES_BDD_4326_WMSV  

Access Point - WMS

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2010-11-23
Explanation

Information sur la conformité au règlement d'interopérabilité des séries et des services de données géographiques.

Pass
true

Conformance result

Date ( Publication )
2013-02-04
Explanation

Information sur la conformité de la ressource à une spécification.

Pass
true
Statement

The product was prepared by processing the side sonar data and MultiBeam EchoSounder (MBES) data listed, converted and integrated in the Dunes GIS between 2006 and 2013. If several surveys are completed in the same zone, the most recent dune location is shown. The product is based on shape files: Dunes_Data_Shom_19112013, validated on 20/11/2013.

gmd:MD_Metadata

File identifier
HOM_GEOL_DUNES_V1_1.xml   XML
Metadata language
fre French
Character set
UTF8
Hierarchy level
Dataset
Hierarchy level name

Jeu de données

Date stamp
2013-12-04T12:28:36
Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

  Point of contact

Shom  

13 rue du Chatellier

BREST

29200

France


 
 

  Overviews

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  Provided by

  Views

  • INSPIRE
  • Simple
  • Full
  • XML
HOM_GEOL_DUNES_V1_1.xml   Access to the portal Read here the full details and access to the data.

  Associated resources

Not available


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