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This article discusses the necessity and methodology of developing a Coastal Sediment Management Plan (CSMP) for regions exposed to coastal erosion. It emphasizes the importance of long-term vision and sustainable coastal management in the face of increasing erosion, population growth, and sea-level rise. The case study of the Coastal Sand Management Plan of Languedoc-Roussillon in France is presented, showcasing the evolution of the plan, priority sites, and restoration efforts.
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The necessity of Coastal Sediment Management Plan (CSMP) elaboration in regions exposed to coastal erosion: a management tool for the current and future sandy coasts Olivier RAYNAL, Raphaël CERTAIN, Bénédicte GUERINEL Biarritz 21/10/2011
Introduction In the first time (1970 in Languedoc-Roussillon)… Eroded sandy coast + Growth of population and economy in coastal area Development of artificial coastline Punctual measurements And now… Coast erosion increasing + Growth of population and economy in coastal area + Sea-level rise Development of a sustainable and global (regional scale) coastal management, with a long-term vision
Coastal Sand Management Plan methodology international ICZM and CSMP review:
The Coastal Sand Management Plan of Languedoc-Roussillon > 220 km of coastline > 4 departments and 30 « districts » > 28 % of artificial coast > 24 % of eroded coast
Sedimentary dynamics change The Coastal Sand Management Plan of Languedoc-Roussillon Century evolution of sand budget 1970’s Erosion in the shoreface Present day
Existing sand management plan Priority sites CPER 2007/2013 Narbonnais Accretion Erosion 1984/2009 The Coastal Sand Management Plan of Languedoc-Roussillon Homogenisation and globalisation of sand management to regional scale (Brunel et al., in prep.)
(BEACON, 2009) The Coastal Sand Management Plan of Languedoc-Roussillon (Patsch & Griggs, 2007)
The Coastal Sand Management Plan of Languedoc-Roussillon Restoration of global sand transfer