Bathymetric datasets before 1970

Bathymetric datasets are an extraction of surveys belonging to the Shom public database. For depth up to 50m, the vertical precision of soundings varies from 30cm to 1m and the horizontal precision varies from 1 to 20m. In deep ocean, the vertical precision is mainly around 1 or 2% of the bottom depth. It is sometimes more, it depends on the technology used. The data are referenced to ZH which is assimilated to LAT. Data are corrected for sound velocity variations.

 
Citation proposal
. Bathymetric datasets before 1970. https://services.data.shom.fr:/geonetwork/db/api/records/LEVES_BATHY_AVANT_1970.xml

Simple

Date ( Revision )
2023-12-13
Identifier

http://www.shom.fr/BATHYMETRIE/LEVES_BATHY_AVANT_1970

Presentation form
Digital map
Credit

©Shom

Status
On going

  Owner

Maintenance and update frequency
Not planned
Keywords ( Theme )

  • bathymetry

  • Open data

  • Product

Use limitation

Data free of use by acknowledging its source. Open licence Etalab v. 2.0 avril 2017.

Use limitation

Product not certified for navigation.

Use limitation

Data free of use by acknowledging its source. Open licence Etalab v. 2.0 avril 2017.

Use limitation

Product not certified for navigation.

Access constraints
License
Use constraints
Other restrictions
Other constraints
Licence Ouverte version 2.0 Open Licence version 2.0
Access constraints
Other restrictions
Other constraints
Pas de restriction d'accès public. No public access restrictions.
Classification
Unclassified
Spatial representation type
Vector
Distance
99999  metre
Metadata language
French
Character set
UTF8
Topic category
  • Elevation
N
S
E
W


Begin date
1816-01-01T00:00:00
End date
1969-12-31T23:59:59
Distribution format

  • XYZ ASCII

    (

    1.0

    )

  Distributor

OnLine resource
Shom geoportal  
OnLine resource
LEVES_BATHY_AVANT_1970_WMSV  

Access point / WMS

OnLine resource
Download service  

Access point / Download service

OnLine resource
Shom marketplace  
Hierarchy level
Series

Conformance result

Date ( Publication )
2013-10-21
Explanation

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

Pass
false
Statement

Bathymetric datasets, collected before 1970, are historical surveys acquired with leadlines (and single-beam echosounders after 1930-1940). Bathymetric datasets are an extraction of surveys belonging to the Shom public database. They go through a quality control before integration. Quality controls and qualification, conducted by the Shom, on these datasets are not exhaustive. Datasets may present significant uncertainties and errors may remain.

Metadata

File identifier
LEVES_BATHY_AVANT_1970.xml   XML
Metadata language
French
Character set
UTF8
Hierarchy level
Series
Hierarchy level name

Produit

Date stamp
2024-06-12T10:24:19
Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

  Point of contact

 
 

  Overviews

thumbnail
large_thumbnail

Provided by

Access to the portal

Associated resources

Not available