An earthquake-event-based method for mapping tsunami hazards

作者：Jaimes Miguel A^*; Reinoso Eduardo; Ordaz Mario; Silva Rodolfo; Mendoza Edgar; Huerta Benjamin; Duran Gerardo; Chavez Xavier; Rodriguez Juan C

来源：Proceedings of the Institution of Civil Engineers-Maritime Engineering, 2016, 169(4): 148-162.

DOI：10.1680/jmaen.2015.37

• coastal engineering
• safety & hazards
• seismic engineering

This paper proposes an earthquake-event-based method for the construction of regional flood hazard maps for tsunami. The method involves five steps. The first is to characterise the seismic hazard as a set of collectively exhaustive and mutually exclusive stochastic events that fully describes the spatial distribution and annual frequency of occurrence in accordance with the location of an earthquake, its depth and magnitude. The second is to compute the vertical sea-floor deformation produced by each one of the earthquakes, after which the propagation of tsunami and the inundation depth produced by each earthquake is calculated. Step four is to present the earthquake-induced tsunami hazard considering only those events that could generate a tsunami as a set of stochastic events that describes the spatial distribution of each tsunami. The final step is to obtain, for any point of interest, the tsunami inundation depth exceedance rate, taking into account the contribution of all tsunamis computed in step four. The method is applied to obtain maps of tsunami hazard for the Mexican Pacific coast for return periods of 150 and 500 years.

• 出版日期2016-12