Bathymetric DEM for the coasts of la Réunion (Homonim project)

The bathymetric DEM for the coasts of La Réunion with a resolution of 0.001° (~ 100 m) was prepared as part of the HOMONIM project.

The DEM covers the entire Reunion island. The model ranges off-shore to a depth of 4000 m.

The DEM is designed to be used in hydrodynamic models in order to produce high-precision forecasts for coastal water levels and sea conditions and therefore improve the pertinence of the Waves-Submersion monitoring programme.

Citation proposal
. Bathymetric DEM for the coasts of la Réunion (Homonim project). https://services.data.shom.fr:/geonetwork/srv/api/records/MNT_REU100m_HOMONIM_WGS84.xml

Simple

Date ( Creation ): 2015-09-09T00:00:00

Identifier: http://www.shom.fr/BATHYMETRIE/MNT_REU100m_HOMONIM_WGS84

Presentation form: Digital map

Credit: ©Shom

Owner

Shom

13 rue du Chatellier

Brest

29200

France

Maintenance and update frequency: Not planned

GEMET - INSPIRE themes, version 1.0 ( Theme )

Elevation

Keywords ( Theme )

bathymetry
digital elevation model
Product
open data

Keywords ( Place )

La Réunion
Océan Indien

Keywords ( Discipline )

Geophysic

INSPIRE Spatial scope

Nationales

High-value dataset categories

Observation de la terre et environnement

Use limitation: Data may be freely used providing that the source is mentioned as follows "Shom,2016. MNT bathymétrique de façade de La Réunion (Projet Homonim). http://dx.doi.org/10.17183/MNT_REU100m_HOMONIM_WGS84"

Use limitation: Do not use for navigation

Use limitation: The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission.

Use limitation: Do not use for navigation

Access constraints: License

Use constraints: Other restrictions

Other constraints: Data may be freely used providing that the source is mentioned as follows "Shom,2016. MNT bathymétrique de façade de La Réunion (Projet Homonim). http://dx.doi.org/10.17183/MNT_REU100m_HOMONIM_WGS84"

Access constraints: Other restrictions

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

Classification: Unclassified

Spatial representation type: Grid

Distance: 0.001 dd

Metadata language: fre French

Character set: utf8 UTF8

Topic category

Elevation

Vertical extent

Minimum value: -4480

Maximum value: 20

Vertical CS

No information provided.

Vertical datum

No information provided.

Vertical extent

Minimum value: -4480

Maximum value: 20

Vertical CS

No information provided.

Vertical datum

No information provided.

Reference system identifier

EPSG

WGS 84 (EPSG:4326)

7.9

Number of dimensions: 2

Dimension name: Row

Dimension size: 2001

Resolution: 0.001 dd

Dimension name: Column

Dimension size: 1751

Resolution: 0.001 dd

Cell geometry: Area

Transformation parameter availability: false

Distribution format

ArcGis Grid
(
-
)
BAG
(
-
)
GLZ
(
-
)
GRD
(
-
)

Distributor

Shom

OnLine resource: Shom geoportal

OnLine resource

MNT_REU100m_HOMONIM_PBMA_PYR_PNG_3857_WMSR

Bathymetric DEM Reunion island raster WMS

OnLine resource: Download service LAT

OnLine resource: Download service MSL

OnLine resource: Shom distribution space

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: In addition to the Shom data, the surveys of external organisms have been exploited, the contributors of which are as follows: DDTM 974, DEAL de La Réunion, Grand Port Maritime de La Réunion, Ifremer (SAVOYE Bruno (2006) ERODER 1 cruise, RV Beautemps-Beaupré, http://dx.doi.org/10.17600/6090020), IPEV, IPGP (DEPLUS Christine (2006) FOREVER cruise, RV L'Atalante, http://dx.doi.org/10.17600/6010050), UBO-IUEM-LDO

Description

The main tasks involved in producing this range of solutions are based on 4 key aspects, each intended to reduce uncertainty for the DEM:

1) collecting, evaluating, pre-processing and selecting data from multiple sources after acquisition using survey systems from various eras;

2) homogenising the vertical and horizontal datums for data sets;

3) using interpolation algorithms suitable for a heterogeneous distribution and the variable density of data, and

4) evaluating and qualifying the final product and preparing documentation.