Coastline change map


  • The Coast Line Change Map provides the delineation of the stretches of coast on which changes occurred between two different time instants (initial and final date), classifying them according to the type of variation, which can be
    • Variation in the typology of the stretch of coast (e.g. from natural to artificial)
    • Shifting the shoreline (retreat or advance)

Operating scenarios

  • Post event

Technical specification

Spatial resolution1 – 10m
Coverage areaMaximum extension of the coastline considered: 50km
Geographic accuracyCircular Error 90%: <= 2 pixels (equal to 2 times the spatial resolution of the EO data used) or equal to that of the Coastline Maps products (State Maps) used as input
Information Age1 year
Measurement uncertainty15%
Measurement / projection unitMeasurement unit: m Projection: UTM-WGS84
Input EO dataIf a Coastline Map (State Map) is not available for the final date: – High resolution optical data: oSentinel-2, Pléiades, GeoEye – High resolution SAR data (support): oCOSMO SkyMed, TerraSAR-X relating to the final date considered.
Other input data– Coastline Map (State Map) for the start date – Coastline Map (State Map) for the end date (optional) – DEM – Existing land cover map (optional)
Validation dataGround truth
FormatGIS-file: shapefile and GeoTIFF Metadata: compliant with ISO 19115 standards, and with the specifications required by the Inspire Directive by the relative Legislative Decree
Refresh rate2 days


Map of Coast Line Change on the southeastern coast of the island of Pianosa, obtained by comparing two Coast Line Maps relating to two different dates