National Tsunami Model: Stage 1 final report (revised edition including Stage 1a)

This report presents the outcomes of Stage 1 and Stage 1a of the National Tsunami Model. Central to this work is the use of physics-based source catalogues and hydrodynamic modelling of tsunami impacts.

Drawing upon this work, and in consultation with the wider Aotearoa New Zealand research community, the team have developed a strategy for a nationally consistent model of tsunami hazard and risk. This approach to Te Whanganui-a-Tara / Wellington Region. In this framework,  physics-informed models of the earthquake cycle are used to generate a catalogue of 30,000 years of synthetic earthquakes.

This catalogue is analysed to create hydrodynamic models of inundation for the events that create significant loss. Loss is then calculated with the RiskScapeTM platform. The report concludes by presenting a new model of tsunami hazard and risk that includes the critically important effects of complex, multi-fault rupture.