In the context of climate change and increasing urbanization, floods are considerably affecting urban areas. The concept of urban resilience may be an interesting means of responding to urban flood issues. The objective of this research is to propose a spatial decision support tool based on geovisualization techniques and a resilience assessment method. The goal is to localize the level of resilience modelled in different territories. The methodology proposed consists of integrating three resilience indicators applied to a case study in Avignon (Provence-Alpes-Côte d'Azur region, France) and the use of geovisualization techniques: using GIS for data processing and analysis, visualization, mapping, and model processing. The methodology integrates decision-making by identifying characteristics capable of improving urban resilience and facilitating its understanding using a visual tool. The results demonstrate the usefulness of modelling resilience using geovisualization techniques to identify the potential for local resilience; integrate local stakeholders into a process of clarifying the concept through the contribution of visualization; and consider easier access to this concept based on data analysis, processing and visualization through the design of maps.

In the context of climate change and increasing urbanization, Small Island Developing States are increasingly vulnerable to natural disasters. In response to urbanization in at risk areas, the concept of territorial resilience has potential as an approach to urban flood issues. The objective of this research is to develop a spatial decision support tool based on a collaborative assessment method of territorial resilience. The proposed methodology consists of: the adaptation to the French Polynesian context, three existing resilience assessment methods applied to a case study in the Punaruu Valley’s (Punaauia, French Polynesia) and the use of geovisualization techniques: use of GIS for data processing and analysis, visualization, mapping and model processing. This methodology integrates the technical, urban and social components of the territory, while highlighting the various levers available to improve territorial resilience and facilitate its understanding through collaborative work efforts and the use of a visual tool. The results demonstrate the reproducibility of these methods for assessing resilience in French Polynesia. They underline the potential of a collaborative approach to highlight critical infrastructures and generate possible decision support to improve the territory’s ability to function despite a disruption and the ability to rebuild following this disruption.

Dans un contexte de dérèglement climatique, les catastrophes sont plus dommageables et plus fréquentes. Cette augmentation dans la récurrence et l’intensité des catastrophes a accentué la vulnérabilité de certains espaces, notamment des espaces insulaires comme ceux du Pacifique. Face à cette tendance, et au vu du manque d’outils de gestion et d’atténuation des risques et de la vulnérabilité, le concept de résilience permet d’enrichir le panel de stratégies pour atténuer les impacts négatifs de la récurrence et de l’intensité des catastrophes. Bien que novateur dans son approche, le concept de résilience est cependant très peu opérationnalisé. L’objectif de cette approche est d’approfondir et adapter des outils d’aide à la décision construits pour opérationnaliser la résilience. L’idée est de poursuivre ces approches afin de construire un Observatoire de résilience. L’objectif de cet observatoire est de développer des méthodologies d’évaluation et de suivi de la résilience afin de faciliter et favoriser la mise en action de la résilience face au dérèglement climatique pour les îles de Polynésie Française.