Abstract
Seismic risk is typically quantified probabilistically for a single asset or evaluated through regional loss assessment for selected earthquake events. Ideally, a recurrence relationship for a loss quantity, economic loss or casualty, can be obtained for risk-informed decision-making. This can be achieved by a fully stochastic approach, for which a large amount of input information is required, whilst there is usually a lack of transparency that might hinder repeatability of the outputs. Hence, the objective of this paper is to introduce a simple and unambiguous procedure for developing parametric societal risk function based on rigorous loss modelling of response-specific probabilistic scenarios. This is then illustrated for the Greater Melbourne Region with fatality as the loss quantity. The proposed semi-probabilistic procedure can be extended to other loss quantities, as well as evaluating societal risk of other natural hazards or multiple hazards.
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Acknowledgements
The first author gratefully acknowledges the invitations of visiting professorship and the associated financial support offered by the Center for Disaster Management and Risk Reduction Technology at Karlsruhe Institute of Technology, Germany, for the periods January–June 2013 and June–July 2016.
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Tsang, HH., Daniell, J.E., Wenzel, F. et al. A semi-probabilistic procedure for developing societal risk function. Nat Hazards 92, 943–969 (2018). https://doi.org/10.1007/s11069-018-3233-z
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DOI: https://doi.org/10.1007/s11069-018-3233-z