In France, in the context of regulatory mapping (PPRNs –Prevention Plans of Natural Risk based on French regulatory rules), landslide hazard assessment follows an empirical approach and uses basic available data. Therefore, the results are closely linked to the quality of the expertise and divergent opinions may arise in some specific cases. In recent years, numerical approaches using GIS, the availability of new databases, the development of new acquisition tools in the field and web visualization services have improved the knowledge of phenomena and different landslide-prone areas. Numerical approaches using GIS, that allow the transparency and traceability of results, have various levels of complexity and require different quantities of input data. However, they are often neglected by experts and new data and tools are not currently used to develop regulatory mapping documents. Numerous scientific examples show that these numerical approaches, web services and new tools can be a significant help in improving knowledge and provide a credible alternative to the expert approach, even in a regulatory context such as a PPRN. Thus, through this synthesis carried out as part of the regulatory mapping of landslide hazards and risks in France, a state-of-the-art spatial assessment of current landslide hazards is performed. The new tools and newly available databases to support this type of analysis are then described. Finally, the perspectives and limitations of alternative approaches and new tools and data are discussed, leading to some considerations for the improvement of the current method of producing landslide hazard maps for PPRNs in France
Improvement of landslide hazard assessments for regulatory zoning in France: STATE–OF–THE-ART perspectives and considerations
Résumé
en
In France, in the context of regulatory mapping (PPRNs –Prevention Plans of Natural Risk based on French regulatory rules), landslide hazard assessment follows an empirical approach and uses basic available data. Therefore, the results are closely linked to the quality of the expertise and divergent opinions may arise in some specific cases. In recent years, numerical approaches using GIS, the availability of new databases, the development of new acquisition tools in the field and web visualization services have improved the knowledge of phenomena and different landslide-prone areas. Numerical approaches using GIS, that allow the transparency and traceability of results, have various levels of complexity and require different quantities of input data. However, they are often neglected by experts and new data and tools are not currently used to develop regulatory mapping documents. Numerous scientific examples show that these numerical approaches, web services and new tools can be a significant help in improving knowledge and provide a credible alternative to the expert approach, even in a regulatory context such as a PPRN. Thus, through this synthesis carried out as part of the regulatory mapping of landslide hazards and risks in France, a state-of-the-art spatial assessment of current landslide hazards is performed. The new tools and newly available databases to support this type of analysis are then described. Finally, the perspectives and limitations of alternative approaches and new tools and data are discussed, leading to some considerations for the improvement of the current method of producing landslide hazard maps for PPRNs in France
1
BRGM -
Bureau de Recherches Géologiques et Minières
( 18404 )
- regroupe le site d'Orléans et l'ensemble des Directions régionales sous une seule et même affiliation. Ne pas décliner de sous-structures locales
- France
2
EVS -
Environnement, Ville, Société
( 145345 )
- 18 Rue Chevreul
69362 LYON CEDEX 07
UMR 5600
- France
École normale supérieure de Lyon UMR5600 ( 6818 )
;
École des Mines de Saint-Étienne UMR5600 ( 29212 )
;
Institut National des Sciences Appliquées de Lyon ( 219748 )
;
Université de Lyon ( 301088 )
;
Institut National des Sciences Appliquées ( 301232 )
;
Université Jean Monnet - Saint-Étienne UMR5600 ( 300284 )
;
École Nationale des Travaux Publics de l'État UMR5600 ( 300365 )
;
École nationale supérieure d'architecture de Lyon ( 411390 )
;
Centre National de la Recherche Scientifique UMR5600 ( 441569 )
3
LETG - Caen -
Littoral, Environnement, Télédétection, Géomatique
( 929 )
- Esplanade de la Paix, CS 14032, 14032 Caen cedex 5
- France
Littoral, Environnement, Télédétection, Géomatique UMR 6554 ( 14266 )
;
Université de Caen Normandie ( 7127 )
;
Normandie Université ( 455934 )
;
Université d'Angers ( 74911 )
;
École Pratique des Hautes Études ( 110691 )
;
Université Paris Sciences et Lettres ( 564132 )
;
Université de Brest ( 300314 )
;
Université de Rennes 2 ( 406201 )
;
Centre National de la Recherche Scientifique UMR 6554 ( 441569 )
;
Institut de Géographie et d'Aménagement Régional de l'Université de Nantes ( 530572 )
;
Université de Nantes 93263 ( 93263 )
Langue du document
Anglais
Nom de la revue
IJDRR -
International Journal of Disaster Risk Reduction
(ISSN : 2212-4209)
Publié par Elsevier
Revue non référencée dans Sherpa-Romeo
Vulgarisation
Non
Comité de lecture
Oui
Audience
Internationale
Date de publication
2020-03-17
Volume
47
Page/Identifiant
101562
Domaine(s)
Sciences de l'Homme et Société/Géographie
Sciences de l'environnement
Mots-clés
en
Landslides, Hazard, Regulatory zoning, France, Alternative approaches, landslides hazard regulatory zoning France alternative approaches, landslides, hazard, regulatory zoning, alternative approaches