Interdisciplinary solutions for early hazard warning and disaster management require easy access to large sets of geo-referenced data. Therefore, three-dimensional (3D) geo-databases, hitherto hardly noticed by the public and decision makers, will probably have a central role to play, a situation comparable to the appearance of 3D city models 15 years ago. At that time, these models seemed to be too expensive to become widely used, but now it is clear that visualisation of 3D city models is only the first step on the way to further analysis for experts and decision makers in disaster management.
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