Risk estimation of tsunami disaster wastes in a region affected by the anticipated Nankai Trough earthquake

Abstract

During the 2011 Great Japan earthquake, approximately 23 million tons of disaster debris was generated. If disaster debris is poorly managed, the waste can have significant environmental and public health impacts and, finally, it can affect the overall recovery process. In this paper, a risk-based framework for estimating the tsunami disaster wastes in a region affected by the anticipated Nankai Trough earthquake is presented taking into consideration uncertainties associated with the prediction of tsunami hazard and structural vulnerability. As an illustrative example, risk curves of tsunami disaster waste are provided for several locations in Mie Prefecture. The proposed framework can contribute to developing a strategy to manage the tsunami debris for the disaster resilience enhancement.