Atollscape: Simulating freshwater management in Pacific Atolls. Spatial processes and time dependence issues

Perez Pascal, Dray Anne, White Ian M., Le Page Christophe, Falkland Tony. 2003. Atollscape: Simulating freshwater management in Pacific Atolls. Spatial processes and time dependence issues. In : Integrative Modelling of Biophysical, Social, and Economic Systems for Resource Management Solutions. International Congress on Modelling and Simulation, Townsville, Australia, 14-17 July 2003. Post David A. (ed.). s.l. : MSSANZ, 514-518. ISBN 0-9758400-2-9 International Congress on Modelling and Simulation, Townsville, Australie, 14 Juillet 2003/17 Juillet 2003.

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Résumé : Groundwater has long been ranked as a high priority research area by small island nations in the Pacific. It is the major source of freshwater on the atoll of Tarawa (Rep.of Kiribati) and its availability, quality, management and allocation are central to the atoll¿s sustainable development and poverty alleviation. From a modeling perspective, simulating freshwater lens behavior represents a challenge, as it requires sophisticated numerical models. Such models can hardly fit within an integrated management framework taking into account spatially distributed water use (e.g. wells, trees) and social interactions. Simple analytical solutions exist but they apply for steady-state conditions, verified only on an annual basis. Recent advances in the field of Distributed Artificial Intelligence have permitted the development of a Multi Agent System (MAS) approach, closely related to the problem of complexity. AtollScape uses MAS techniques to simulate water management and freshwater lens behavior on the Tarawa atoll. A distributed and nested structure is used to represent local inputs and uptakes, along with freshwater lens adjustments on a 10 day time steps.

Mots-clés Agrovoc : atoll, gestion des eaux, modèle de simulation, modélisation environnementale, eau douce, approvisionnement en eau, environnement socioéconomique, hydrologie

Mots-clés géographiques Agrovoc : Kiribati

Mots-clés complémentaires : Système multiagents

Classification Agris : P10 - Ressources en eau et leur gestion
U10 - Informatique, mathématiques et statistiques

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