Governance of relocation policies in the face of sea-level rise risk

International audience; Sea-level rise related to climate change will tend to increase the risk of marine inundation. The sustainability of beaches, which are a natural strategic asset for coastal zones given the recreational and storm protection services that they provide, may be threatened. This article addresses the local governance conditions for adaptation policies through the case of relocation which is one of the recommended measures for adaptation to sea level rise. In addition to the funding issue, the local governance conditions for these policies are addressed through a review of arrangements that would support the implementation of relocation. The article focuses in particular on the contribution of the recent concept of libertarian paternalism which orients towards agents towards well-being promoting public interventions.; La montée du niveau de la mer liée au changement climatique engendre un renforcement des risques de submersion marine. L'objectif de cet article est de s'interroger sur les conditions de gouvernance des politiques d'adaptation en développant le cas des relocalisations qui constituent une des modalités préconisées dans le cadre de l'adaptation à la montée du niveau de la mer. Nous étudierons en particulier l'apport de la doctrine récente du paternalisme libertaire qui propose une intervention publique se limitant à orienter les individus vers des choix qui soient favorables à leur bien-être.