Multi-scale spatial sensitivity analysis of a model for economic appraisal of flood risk management policies - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Environmental Modelling and Software Année : 2014

Multi-scale spatial sensitivity analysis of a model for economic appraisal of flood risk management policies

Résumé

We demonstrate the use of sensitivity analysis to rank sources of uncertainty in models for economic appraisal of flood risk management policies, taking into account spatial scale issues. A methodology of multi-scale variance-based global sensitivity analysis is developed, and illustrated on the NOE model on the Orb River, France. The variability of the amount of expected annual flood avoided damages, and the associated sensitivity indices, are estimated over different spatial supports, ranging from small cells to the entire floodplain. Both uncertainty maps and sensitivity maps are produced to identify the key input variables in the NOE model at different spatial scales. Our results show that on small spatial supports, variance of the output indicator is mainly due to the water depth maps and the assets map (spatially distributed model inputs), while on large spatial supports, it is mainly due to the flood frequencies and depthedamage curves (non spatial inputs).
Fichier principal
Vignette du fichier
SaintGeours2014b.pdf (1016.96 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01526090 , version 1 (22-05-2017)

Identifiants

Citer

Nathalie Saint-Geours, Jean-Stéphane Bailly, Frédéric Grelot, Christian Lavergne. Multi-scale spatial sensitivity analysis of a model for economic appraisal of flood risk management policies. Environmental Modelling and Software, 2014, 60 (60), pp.153-166. ⟨10.1016/j.envsoft.2014.06.012⟩. ⟨hal-01526090⟩
228 Consultations
521 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More