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chapter 4 - DRK

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Strictly under embargo until Wednesday 22 September at 00:01 GMT (02:01 Geneva time)Miscellaneous accidents: Collapse of domestic / non-industrial structures; explosions;fires.In Tables 1–13, ‘disasters’ refer to disasters with a natural or a technological triggeronly, and do not include wars, conflict-related famines, diseases or epidemics. Theclassification of countries as ‘very high’, ‘high’, ‘medium’ or ‘low human development’is based on UNDP’s 2009 Human Development Index (HDI). For a small number ofcountries, which do not appear in the HDI, the World Bank’s classification of economiesby the countries’ level of income is used as reference (‘high’, ‘upper middle’ ‘lowermiddle’ and ‘low’).In both EM-DAT and the tables in this annex, data are considered at country level formany reasons, including the fact that it is at this level that they are reported most of thetime and also due to issues regarding possible aggregation and disaggregation of data.For droughts or food insecurities, which are often multi-year events, their impact overtime is taken into account.Bearing in mind that data on deaths and economic damage from drought are infrequentlyreported, CRED has adopted the following rules regarding data for droughts:The total number of deaths reported for a drought is divided by the number ofyears for which the drought persists. The resulting number is registered for eachyear of the drought’s duration.The same calculation is done for the reported economic damages.For the total number of people reported to be affected, CRED considers that thesame number is affected each year that the disaster persists.ANNEX 1Some disasters begin at the end of a year and may last some weeks or months into thefollowing year. In such case, CRED has adopted the following rules:With regard to the number of people reported affected, the total number isrecorded for both the start year and the end year.For the number of people reported killed, CRED distinguishes between suddenonsetdisasters (earthquakes, flash floods, landslides, etc.) and slow-onset disasters(wildfires, some floods, extreme temperatures, etc.) as follows:– Sudden-onset disasters – all those killed are registered according to the start yearof the disaster– Slow-onset disasters – the total of all those killed is divided by two and a half isattributed to each year of persistence.Reported economic damages are always attributed to the end year of the disaster.This is because damage is related to both the strength of a disaster and its duration.By using these rules, some data bias correction is attempted. However, they are farfrom perfect and CRED will try to improve them, as well as the database as a whole,in the future.World Disasters Report 2010 – Disaster data163

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