ABSTRACT
As more population migrates to coastal regions worldwide, earthquake-triggered tsunamis pose a greater threat than ever before. Coastal communities face an urgent need for operational decision-support tools that provide robust and accurate performance assessments of infrastructural systems under multi-hazard actions. This chapter presents a novel stochastic earthquake-tsunami multi-hazard analysis and carries out a multi-hazard loss estimation by incorporating earthquake and tsunami vulnerability components. Possible implementations of the new multi-risk tool in the context of cost-benefit analysis of risk mitigation options are discussed to illustrate their applications in developing more effective disaster risk reduction strategies, including early warning systems and evacuation plans for tsunamis. A case study of evacuation planning in Padang, Indonesia, is discussed by focusing on tsunami evacuation shelters, which represent a prime example of critical structures and facilities that must withstand against the sequence of earthquake and tsunami.
