Les observatoires du trait de côte en France métropolitaine et dans les DOM

Abstract

In pre-commitment of 74 du Grenelle de la mer "develop a methodology and a national strategy for shoreline management, the strategic retreat and defense against the sea [...]," a synthesis of work on observatories of shoreline in mainland France and overseas departments was carried out by BRGM at the request of MEEDDM. The findings of this study emphasize the strong heterogeneity of surveys from short time monitoring and limited in space, to long term monitoring at regional scale involving many actors. These different scenarios provide a typology of four classes of different types of observatory. This work also highlights the diversity of actors in charge of these surveys, resulting in a diversity of methods and protocols for data acquisition. Thus, the comparison of information from one observatory to another is not always easy. Similarly, various forms of storage of this information indicate that one actor to another, the interoperability of metadata remains low. As shown in the case study is discussed at the end of article (l’Observatoire du Domaine Côtier de l’IUEM), the upgrading of the data acquired after the European INSPIRE directive, along with a better structure and to a continuation of monitoring, appear necessary. This would promote opportunities for exchange and would provide a clear vision of the long term evolution of the shoreline in France and the overseas departments.

Keywords

• observatory
• shoreline
• typology
• interoperability
• metadata