Guyane-SIG
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.
Simple
- Date (Revision)
- 2023-08-08T00:00:00
- Presentation form
- Digital map
- Credit
- ©Shom
- Status
- On going
- Maintenance and update frequency
- Not planned
- Theme
-
- bathymetry
- Product
- Use limitation
- Bathymetric Dataset are available under Open License (version 2.0 - April 2017), Etalab mission
- Use limitation
- Product not certified for navigation.
- Use limitation
- Open License (version 2.0 - April 2017), Etalab mission
- Access constraints
- License
- Use constraints
- Other restrictions
- Other constraints
- No public access restrictions
- Classification
- Unclassified
- Spatial representation type
- Vector
- Distance
- 99999 metre
- Metadata language
- Français
- Character set
- UTF8
- Topic category
-
- Elevation
N
S
E
W
))
- 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
-
-
XYZ ASCII
(
1.0
)
-
XYZ ASCII
(
1.0
)
- OnLine resource
- Shom geoportal ( WWW:LINK-1.0-http--link )
- OnLine resource
-
LEVES_BATHY_AVANT_1970_WMSV
(
OGC Web Map Service
)
Bathymetric datasets before 1970
- OnLine resource
- Shom marketplace ( WWW:LINK-1.0-http--link )
- 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.
- File identifier
- LEVES_BATHY_AVANT_1970.xml XML
- Metadata language
- Français
- 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
Overviews
thumbnail
large_thumbnail
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available