CRUST (Cascading Risk and Uncertainty assessment of earthquake Shaking and Tsunami) takes advantage of the UK's leadership in uncertainty evaluation of earthquake source and ground motion and on-shore tsunami impact research to develop an innovative cross-hazard risk assessment methodology for cascading disasters that promotes dynamic decision-making processes for catastrophe risk management. CRUST is composed of four work packages (WPs): WP1-'Ground shaking risk modelling due to mega-thrust subduction earthquakes'; WP2-'Tsunami wave and fragility modelling due to mega-thrust subduction earthquakes'; WP3-'Integrated multi-hazards modelling for earthquake shaking and tsunami'; and WP4-'Case studies for the Hikurangi and Cascadia subduction zones'.
The aims of WP1 are: to generate strong motion time-histories based on uncertain earthquake slips, reflecting multiple asperities (large slip patches) over a fault plane (WP1-1); to characterise spatiotemporal occurrence of aftershocks using global catalogues of subduction earthquakes (WP1-2); and to conduct probabilistic seismic performance assessment of structures subjected to mainshock-aftershock sequences (WP1-3). WP2 comprises tsunami wave profile and inundation simulation using uncertain earthquake slips (WP2-1); characterisation of tsunami loads to structures in coastal areas through large-scale physical experiments using an innovative long wave generation system at HR Wallingford (WP2-2); and development of analytical tsunami fragility models in comparison with field observations and experiments (WP2-3). WP3 integrates the model components developed from WP1 and WP2 into a comprehensive framework for multi-hazards risk assessment for the 2011 Tohoku earthquake and tsunami (WP3-1). Then, practical engineering tools for the multi-hazards method will be developed in WP3-2. Finally, in WP4, the developed multi-hazards methodology will be applied to the Hikurangi and Cascadia subduction zones.Â
Funding: EPSRCÂ
°ä´Ç²Ô²õ´Ç°ù³Ù¾±³Ü³¾:Ìý,Ìý, British Consulate - Vancouver,ÌýForeign and Commonwealth Office,Ìý (Lower Hutt),Ìý (UK),Ìý (Japan),Ìý (Japan),Ìý (Canada),Ìý (UK),Ìý (Canada),Ìý
Epicetre Staff Involved: Tiziana Rossetto (Co-I),ÌýIan Eames,ÌýAndrew Foster,  Christian Klettner,ÌýDavid McGovern,ÌýCrescenzo Petrone,ÌýTristan Robinson.
Other researchers: Katsu Goda (PI) and Raffaele De Risi.