Real-time ground motion simulation workflow (2017)
Background and objective : QuakeCoRE developed the Ground Motion (GM) simulation workflow based on the Graves and Pitarka (2010, 2015) methodology, we have strived to deliver the simulation result in timely manner to increase the research throughput. Our effort has been made in two directions. Firstly we utilized high-performance computing (HPC) facility in partnership with New Zealand eScience Infrastructure (NeSI) to improve the computational capacity. Secondly we have incrementally refined the overall workflow, hence improved the computational efficiency. The importance of such an effort was highlighted by the 2016 Mw7.8 Kaikoura earthquake. While the timely simulation result obtained in the immediate aftermath of an event can be of tremendous value for scientific reconnaissance and civil defence response, our delivery was not responsive, taking 7 hours just to produce the inputs, followed by 2 days of actual computation. This motivated to acquire “Near Real-time” GM simulation capability. In this poster, we present how we carried out the comprehensive overhaul of the computational workflow to achieve this goal.
ANZSRC Fields of Research40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
46 - Information and computing sciences::4602 - Artificial intelligence::460207 - Modelling and simulation
37 - Earth sciences::3706 - Geophysics::370609 - Seismology and seismic exploration
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Polak V; Bradley, Brendon; Zhu M; Bae, Sung Eun; Motha J; Razafindrakoto HNT (2018)Overview. GMSimViz is an automation tool that produces an animated 3D visualization of geological faults, ground motion and other earthquake related data. Typically verification of ground motion simulations involves ...
Huang, Jonney; Bae, Sung Eun; Polak, Viktor; Bradley, Brendon; Razafindrakoto, Hoby; Thomson, Ethan; Lee, Robin; Nazer, Ahsan; Lagrava, Daniel; Motha, Jason (2017)Background and Objective QuakeCoRE developed the Ground Motion (GM) simulation workflow based on the Graves and Pitarka (2010, 2015) methodology, we have strived to deliver the simulation result in timely manner to increase ...
Bradley, Brendon; Tarbali K; Huang J; Lagrava D; Motha J; Bae, Sung Eun; Polak, V (2018)This paper presents the computational workflow and preliminary results of probabilistic seismic hazard analysis (PSHA) in New Zealand based on physics-based ground motion simulations (‘Cybershake NZ’). In the current ...