National Observation Service Dynalit, focuses on Coastline by satellite image
The coastline or shoreline is the geographical boundary between sea and land. It corresponds according to the SHOM to "the leash of the highest seas in the context of an astronomical tide of coefficient 120 and under normal weather conditions (without overcost phenomenon). The coastline as defined above is not directly identifiable continuously on the ground or on a satellite or aerial image. From a perspective of studying the displacement of the shoreline, indicators allow us to approach this notion (the vegetation limit associated with the infrastructure limit, the beach limit, etc.).
On the reef shoreline of Reunion Island the limit of vegetation and infrastructure as well as beach limit were retained. This limit results in the production of a line-type vector geographic information layer in a GIS resulting from the photo-interpolation on Pléiades satellite images. Pleiades satellite images from the Kalideos Réunion database (CNES) have been used since 2016 to study the position of the shoreline annually. Launched in 2011, Pléiades is a very high spatial resolution spatial image system (panchromatic optical instrument at 70 cm and 2.8 m multispectral) operating in the visible and near infrared with a swath of 20 km
UMR Espace-Dev
Simple
- Date (Creation)
- 2012-01-01T00:00:00
- Presentation form
- Digital map
- Purpose
- Réaliser des profils topographiques de 39 plages de la Réunion
- Status
- Under development
- Point of contact
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Organisation name Individual name Electronic mail address Role Espace-Dev
Gwenaëlle Pennober
Originator
- Maintenance and update frequency
- As needed
- Theme
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Elevation
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Reefal beach
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Satellite image Pleiade
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Dynalit
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SNO "Traît de côte, aménagement des littoraux"
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- Place
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Indian Ocean
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Reunion island
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- Access constraints
- Restricted
- Use constraints
- Restricted
- Spatial representation type
- Vector
- Denominator
- 1
- Language
- English
- Character set
- UTF8
- Topic category
-
- Geoscientific information
- Elevation
- Begin date
- 2012
- End date
- en cours...
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- Reference system identifier
- EPSG : 4326
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://geosur.osureunion.fr/thredds/catalog/stacot/tdcimagesat-saintgilles-reef/catalog.html TC Saint-Gilles Reef - images satellites THR
- Hierarchy level
- Dataset
Metadata
- File identifier
- 9174de46-a4c3-4c36-830c-8a5d5e97f141 XML
- Metadata language
- English
- Character set
- UTF8
- Date stamp
- 2026-02-25T06:42:11.305567Z
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
-
1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role UMS3365
Rémy Decoupes
Custodian Espace-Dev
Philippe Rouet
Custodian
- Other language
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Language Character encoding French German Chinese(Other) Arabic Spanish; Castilian Russian English UTF8
Citation proposal
National Observation Service Dynalit, focuses on Coastline by satellite image.
https://geosur.osureunion.fr/geonetwork/srv/api/records/9174de46-a4c3-4c36-830c-8a5d5e97f141
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