A three-level framework for multi-risk assessment
Citation
Liu, Z., Nadim, F., Garcia-Aristizabal, A., Mignan, A., Fleming, K., Luna, B.Q. (2015). A three-level framework for multi-risk assessment. Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards, 9(2): 59-73. Link to paper
Abstract
Many regions of the world are exposed to and are affected by a number of different types of hazards. The assessment and mitigation of the risk posed by those natural and man-made threats at a given location requires that all relevant hazards be considered simultaneously, in a multi-risk (multi-hazard) framework. A three-level framework for multi-risk assessment is proposed. Level 1 comprises the calculation of risk due to single hazards, considering the temporal probability of occurrence, spatial probability of impact, and the vulnerability and value of the exposed elements. Level 2 quantifies the possible hazard interactions and assesses the risk, considering the interactions. Level 3 combines the risks from single hazards and hazard interactions and performs a holistic multi-risk assessment. The proposed framework is illustrated with examples from different regions in Europe.