Sea bed sediment 1:50 000 - pack

The product "Sea bed sediment 1:50 000" contains 2D surface objects geo-referenced digital data describing the nature of the geological seabed (nature of the sediment, including rock type seabed).

Citation proposal
Shom (2023) . Sea bed sediment 1:50 000 - pack. https://services.data.shom.fr:/geonetwork/srv/api/records/HOM_GEOL_NATURES_FOND_50_PACK.xml

Simple

Date ( Creation ): 1992-12-01

Date ( Publication ): 2023-06-01

Identifier: http://www.shom.fr/HOM/GEOL_NATURES_FOND_50_PACK

Author

Shom

13 rue du Chatellier

BREST

29200

France

Keywords ( Theme )

G chart
sedimentology
marine sediment
seabed map
sea bed sediment
open data

GEMET - INSPIRE themes, version 1.0 ( Theme )

Sea regions

INSPIRE Spatial scope

Nationales

Use limitation: Data may be freely used providing that the source is mentioned as follows "Shom, 2023. Sea bed sediment 1:50 000"

Use limitation: Product not certified for navigation

Use limitation: Data may be freely used providing that the source is mentioned as follows "Shom, 2023. Sea bed sediment 1:50 000"

Access constraints: License

Use constraints: Other restrictions

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

Access constraints: Other restrictions

Other constraints: Pas de restriction d'accès public. No public access restrictions.

Classification: Unclassified

Spatial representation type: Vector

Denominator: 50000

Metadata language: fre French

Character set: utf8 UTF8

Topic category

Oceans

Supplemental Information

* Sediment: An assembly of coarse or fine clastic or biogenic particles transported by one or several means.

* Conglomerate: Sediments in which 50 -100% of the particles are larger than 20 mm.

* Gravel conglomerate: Sediments with a conglomerate matrix and 15 - 50% gravel.

* Gravel: Sediments in which 50 -100% of the particles are between 20 and 2 mm.

* Gravelly sand: A sand matrix comprising 15 - 50% gravel.

* Sand: Sediments in which 50 -100% of the particles are between 2 and 0.5 mm.

* Muddy sand: Sand in which between 5 and 20% of the particles are smaller than 0.05 mm.

* Fine sand: Sediments in which 50 -100% of the particles are between 0.5 and 0.05 mm.

* Fine muddy sandstone: Fine sand in which between 5 and 20% of the particles are smaller than 0.05 mm.

* Silt: Sediments composed of 50 to 100% detrital or biogenic particles between 0.01 and 0.05mm.

* Clay: Sediments composed of 50 to 100% detrital or biogenic particles finer than 0.01mm.

* Mud: Sediments in which 20 -100% of the particles are smaller than 0.05 mm.

Distribution format

SHP
(
inapplicable
)
GML
(
3.2
)

Distributor

Shom

OnLine resource

Shom Geoportal

OnLine resource: NDF_BDD_WLD_WGS84G_WMS
Access point

OnLine resource: NDF_BDD_WLD_WGS84G_WFS:natures_fond_50000
Access point wfs

OnLine resource: Download service

OnLine resource

Shom marketplace to download data

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 ): 2013-12-10

Explanation: Information sur la conformité de la ressource à une spécification (INSPIRE).

Pass: true

Statement

The information used for the elaboration of this product comes from sedimentary data recorded, digitised and integrated into the Shom Sedimentological Database (BDSS).

The sedimentary characteristics of the seabed come from data from the Shom, BRGM, Ifremer, the Universities of Lille 1, Rouen, Caen, Brest, La Rochelle, Bordeaux I, Corte and Perpignan, IntechMer, the Charente-Maritime Departmental Council, the Charente-Maritime Departmental Directorate for the Territories and the Sea, the Corsican Environment Office, and the Grand Ports Maritime of Bordeaux and Marseille. This map of surface sediments is the synthesis of data collected by various and varied means: lead sniffing, sampling and coring, aerial photographs and Litto3D (for the coastal fringe) and underwater, acoustic imagery by lateral sonar and very high resolution seismic multibeam sounder. The maps made from these data have been published as 45 paper maps from 1990 to 2023 called G charts.