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.

Date (Revision): 2022-03-03T00:00:00

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

Presentation form: Digital map

Credit: ©Shom

Status: On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Shom		bps@shom.fr	Owner

Maintenance and update frequency: Not planned

Theme

bathymetry
Product
open data

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.

Access constraints: License

Use constraints: Other restrictions

Other constraints: Open licence Etalab v. 2.0 avril 2017.

Access constraints: Other restrictions

Other constraints: No public access restrictions.

Classification: Unclassified

Spatial representation type: Vector

Distance: 99999 metre

Language: Français

Character set: UTF8

Topic category

Elevation

Begin date: 1816-01-01T00:00:00

End date: 1969-12-31T23:59:59

Reference system identifier: EPSG / WGS 84 (EPSG:4326) / 7.9

Distribution format

Name	Version
XYZ ASCII	1.0

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Shom		data-support@shom.fr	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://data.shom.fr	Shom geoportal
OGC Web Map Service	https://services.data.shom.fr/INSPIRE/wms/v?service=WMS&request=GetCapabilities&version=1.3.0	LEVES_BATHY_AVANT_1970_WMSV
WWW:LINK-1.0-http--link	https://diffusion.shom.fr	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: No

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: Français

Character set: UTF8

Hierarchy level: Series

Hierarchy level name: Produit

Date stamp: 2022-12-13T10:44:36

Metadata standard name: ISO 19115:2003/19139

Metadata standard version: 1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Shom		data-support@shom.fr	Point of contact

Other language

Language	Character encoding
English	UTF8

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