Shorelines – Coastline surveillance

If you like to go for walks on the beach, whatever the season, this application proposed by designed by CEREMA (Center for Studies and Expertise on Risks, the Environment, Mobility and Planning) will allow you to become an actor on the coast and to contribute, without any effort, to the survey of the coastline (limit between land and sea).

The principle is simple. By walking on the beach, Rivages give you the possibility of raising the limit between the land and the sea. The data will then be sent, processed, and put online on the Geolittoral site (http://www.geolittoral.developpement-durable.gouv.fr/suivi-du-trait-de-cote-par-smartphone). You thus help to monitor the evolution of this boundary between the land and the sea over time in order to see if the coastline is advancing, receding or remaining stable.

The application was initially tested for low tide coasts (Mediterranean, Martinique…) and was adapted in 2017 for most types of coast. You can choose the type of limit depending on the range where you are.

Functioning :
– Press the “Play” button to start recording.
– Walk on the beach along the edge of the waves. A pause button allows you to bypass obstacles.
– You can also take photos during the survey of the route if you have a question about the identification of the coastline.
– At the end of the survey, automatically send your plots by pressing the “Send” button.
– Once the operation is done, you can exit the application.

Warning : take your readings in calm weather, if the waves are too high it is not possible to record the data.

GPS tracks, GPS quality, device type and photographs will be stored in a database. The e-mail addresses received are automatically encrypted and become unusable except to count the number of users.

GPS tracks are updated every Tuesday on the following link: http://cerema.maps.arcgis.com