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Natural hazards are environmental processes of a certain magnitude, varied character and origin that have an impact in societies for causing victims, damages to property and infrastructures, and for producing socioeconomic disruption, that we call disasters and catastrophes. They are a limiting factor for the development of a great number of countries and some regions in the world. Their increasing impact is the result of more population exposed in hazard-prone areas and the changes in vulnerability. The change of the exposure conditions, the implementation of mitigation strategies and emergency preparedeness are the principal components of a risk management policy conceived to minimize the effects of a hazardous event.