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La concertation lors de la cartographie des aléas littoraux dans les Plans de Prévention des Risques : enjeu majeur de prévention

Céline Perherin 1 
1 LETG - Brest - Littoral, Environnement, Télédétection, Géomatique
LETG - Littoral, Environnement, Télédétection, Géomatique UMR 6554
Abstract : The development of Coastal risks prevention plans, identified as priorities after Xynthia storm in 2010, has revealed divisive debates, between the state services and territorial authorities, about coastal flooding or coastline recession mapping. This PhD research deals with the understanding of coastal hazards mapping. It analyses the factors which influence this process based on what do the maps represent for each stakeholder.The research results highlight that hazards studies sparsely come from territorial knowledge and are often approached from a complex expert angle. Thus, new knowledge is hardly managed by local stakeholders. Significant debates about technical aspects and the process of regulatory zoning conception lead to the fact that hazards mapping crystallizes the PPRL debates. Actually, these debates often hide different conceptions of prevention policy and opposing interests of stakeholders acting at different spatial and temporal scales. The few opened discussions purposed by state services during reference hazards mapping and zoning conception lead to a low territorialization of the PPRL and make their integration in local policies of coastal risks prevention and of land use planning difficult.Thus, this PhD highlights the crucial role of dialogue and of an input by the territory, in order to start an active appropriation of hazards knowledge and to enable the PPRL integration within the territorial public policy.
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Submitted on : Wednesday, April 18, 2018 - 9:53:08 AM
Last modification on : Wednesday, September 28, 2022 - 4:20:10 PM


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  • HAL Id : tel-01722799, version 2


Céline Perherin. La concertation lors de la cartographie des aléas littoraux dans les Plans de Prévention des Risques : enjeu majeur de prévention. Géographie. Université de Bretagne occidentale - Brest, 2017. Français. ⟨NNT : 2017BRES0114⟩. ⟨tel-01722799v2⟩



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