D. Scott Mackay

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Many modern hydrological models require data inputs provided by automated digital terrain analysis functions incorporated into GIS. These inputs include elds representing surface ow directions, up-slope contributing areas, and sub-catchment partitions. Existing raster-based terrain analysis tools, including both those in oOE-the-shelf GIS packages and those(More)
Global information systems have the potential of providing decision makers with timely spatial information about earth systems. This information will come from diverse sources, including field monitoring, remotely sensed imagery, and environmental models. Of the three the latter has the greatest potential of providing regional and global scale information(More)
Spatial models of ecological and hydrological processes are widely used tools for studying natural systems over large areas. However, these models lack speciÿc mechanisms for reporting output uncertainty contributed by model structure, and so testing their suitability for studying a large range of problems is diicult. This paper describes a method of(More)
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