Li, B., Wirp, S.A., Gabriel, A.A., Bader, M. and Halldórsson, B. (2019), Towards physics-based probabilistic seismic hazard assessment in complex fault networks - the ChEESE project, in Proceedings of the Northquake 2019 workshop, edited by Sigurjón Jónsson, Benedikt Halldórsson, Kristín Jónsdóttir, Páll Einarsson, Ragnar Stefánsson, Helena Eydís Ingólfsdóttir and Heiða Elín Aðalsteinsdóttir, pp. 93-95, Þekkingarnet Þingeyinga / Husavik Academic Centre, ISBN: 978-9935-405-58-6, Husavik, North Iceland, 21-24 May 2019.
Type of publication
Publication in Conference Proceedings/Workshop
Year of publication
Physics-based probabilistic seismic hazard assessment (PSHA) has been used to make official national hazard maps, develop building code requirements, determine earthquake insurance rates, and other safety decisions. However, current PHSA are generally based on empirical, time-independent assumptions that are simplified and conflict with earthquake physics. To improve the PHSA, we need to have a good knowledge of the tomography, a three-dimensional (3D) geological structures and velocity model of the study region, together with accurate fault network geometries and appropriate stress and frictional parameters, etc. And in order to better estimate the seismic hazard scenarios and for engineering applications, the frequency of the wave field needs to be resolved up to 10 Hz. As part of the Centre of Excellence for Exascale in Solid Earth (CHEESE) project, we plan to run numerous multiphysics simulations, and use Bayesian approaches to provide a more reliable probabilistic-based hazard estimation in North Iceland. To achieve this goal, two software packages- SeisSol and ExaHype will be applied.