Seismic vulnerability assessment and loss estimation in Cephalonia and Ithaca islands, Greece, due to earthquake events: A case study

摘要

In this paper an estimation of seismic losses for various seismic scenarios of the Cephalonia and Ithaca islands, Greece, is proposed. The area under consideration is located in one of the most seismically active regions with the most damage and human casualties in recent history. Seismic losses were estimated at buildings, economic and human level. The estimation method is based on the assumption that seismic risk depends on vulnerability and seismic hazard. Vulnerability estimation was done by detailed fragility curves representing the structures in the area. Subsequently, losses in the wider area were estimated for various seismic risk scenarios. Parametric scenarios for different earthquake level and retrofit strategy were performed. The earthquake loss estimation software ELER (Earthquake Loss Estimation Routine) was used for the calculations. The numerical results extracted and their comparison with results from actual earthquake loss showed that losses can be estimated in the same order of magnitude as the real data and thus enable the state to be better prepared to deal with future earthquakes more effectively.