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An Ahp-derived Method for Mapping the Physical Vulnerability of Coastal Areas at Regional Scales : Volume 13, Issue 5 (16/05/2013)

By Le Cozannet, G.

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Book Id: WPLBN0004018127
Format Type: PDF Article :
File Size: Pages 19
Reproduction Date: 2015

Title: An Ahp-derived Method for Mapping the Physical Vulnerability of Coastal Areas at Regional Scales : Volume 13, Issue 5 (16/05/2013)  
Author: Le Cozannet, G.
Volume: Vol. 13, Issue 5
Language: English
Subject: Science, Natural, Hazards
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Méndez, M., Bulteau, T., Garcin, M., Mirgon, C., Oliveros, C., Yates, M. L.,...Idier, D. (2013). An Ahp-derived Method for Mapping the Physical Vulnerability of Coastal Areas at Regional Scales : Volume 13, Issue 5 (16/05/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: BRGM, 3 Avenue Claude Guillemin Cedex 2, BP 6009, 45060 Orléans, France. Assessing coastal vulnerability to climate change at regional scales is now mandatory in France since the adoption of recent laws to support adaptation to climate change. However, there is presently no commonly recognised method to assess accurately how sea level rise will modify coastal processes in the coming decades. Therefore, many assessments of the physical component of coastal vulnerability are presently based on a combined use of data (e.g. digital elevation models, historical shoreline and coastal geomorphology datasets), simple models and expert opinion. In this study, we assess the applicability and usefulness of a multi-criteria decision-mapping method (the analytical hierarchy process, AHP) to map physical coastal vulnerability to erosion and flooding in a structured way. We apply the method in two regions of France: the coastal zones of Languedoc-Roussillon (north-western Mediterranean, France) and the island of La Réunion (south-western Indian Ocean), notably using the regional geological maps. As expected, the results show not only the greater vulnerability of sand spits, estuaries and low-lying areas near to coastal lagoons in both regions, but also that of a thin strip of erodible cliffs exposed to waves in La Réunion. Despite gaps in knowledge and data, the method is found to provide a flexible and transportable framework to represent and aggregate existing knowledge and to support long-term coastal zone planning through the integration of such studies into existing adaptation schemes.

Summary
An AHP-derived method for mapping the physical vulnerability of coastal areas at regional scales

Excerpt
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