Groningen Region Earthquake Casualty Risk Assessment

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The aim of the project was to provide a set of judgment-based casualty rates for use in the Groningen earthquake loss estimation model. CAR’s work included the collection of qualitative data describing how people have been injured or killed in earthquake events comparable to seismic activities that may occur in the Groningen region. This was then be used to categorise individual’s injuries/deaths to establish the most common causes in areas dominated by unreinforced masonry buildings, common in the affected region.

In the latter stages, building failure mechanisms were examined from empirical sources (photographs and direct field observations) to assess typical collapse mechanisms to evaluate how possible casualties could be caused. The qualitative and quantitative assessment of causes of casualties, types of injuries and the collapse patterns all formed part of the input to a loss estimation model in assessing casualties from induced earthquakes in the region.

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