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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
Originator
  Espace-Dev - Gwenaëlle Pennober ( Professor chaire mixte IRD / Université de la Réunion )
15, avenue René Cassin , Saint-Denis , Université de la Réunion , 97744 , France
+262 262 29 93 15
Maintenance and update frequency
As needed
Theme
  • Elevation
  • Reefal beach
  • Satellite image Pleiade
  • Dynalit
  • SNO "Traît de côte, aménagement des littoraux"
Place
  • Indian Ocean
  • Reunion island
Access constraints
Restricted
Use constraints
Restricted
Spatial representation type
Vector
Denominator
1
Metadata 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
TC Saint-Gilles Reef - images satellites THR ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset
File identifier
9174de46-a4c3-4c36-830c-8a5d5e97f141 XML
Metadata language
English
Character set
UTF8
Date stamp
2022-09-21T12:13:59
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Custodian
  UMS3365 - Rémy Decoupes ( IT Manager )
15, avenue René Cassin , Saint-Denis , Université de la Réunion , 97744 , France
+262 262 93 82 28
Custodian
  Espace-Dev - Philippe Rouet ( Ingénieur d'étude )
15, avenue René Cassin , Saint-Denis , Université de la Réunion , 97744 , France
 
 

Overviews

overview overview
apercu_coastal-station-TC.jpg

Spatial extent

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Keywords

Dynalit Elevation Reefal beach SNO "Traît de côte, aménagement des littoraux" Satellite image Pleiade

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