... demonstrate that reasons are more "human" than "physical" since the ideas of "hazard impact" and "humans" are strongly linked. First, the focus will be on a physical explanation of hazard impact. Global climate change and hazard characteristics will be developed. The idea of a single trend that would apply worldwide will be put to the question since there is a spatial variability of impact. Then, after explaining human interaction with its environment and its link with hazard impact definition, it will be determined which aspects are getting worse. Eventually, the emphasis will be on a failure in hazard management owing to either a lack of money or to human perception of hazard. A general increase of natural hazard impact? From a physical viewpoint, global climate change introduces new physical patterns such as increased erosion because of deforestation... Then, men have to cope with this modified environment. Global warning brings ...

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