Tsunami damage and post-event disruption assessment of road and electricity infrastructure

A recent study by led by University of Canterbury researchers proposes and tests a framework (consisting of hazard, exposure, vulnerability and impacts) for tsunami impact assessment of critical infrastructure. In collaboration with infrastructure network operators in Ōtautahi Christchurch, a deterministic tsunami impact scenario was investigated using RiskScape software to quantify road and electricity network component damage, service disruption and restoration time. Results published in the International Journal of Disaster Risk Reduction demonstrate the isolation several coastal suburbs to network services for 3–44 days, with 10–44 days required to reinstate all routes. This information is critical for informing mitigation initiatives for asset managers, planners and emergency managers.