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    Broadband ground motion simulation of the 2010-2011 Canterbury earthquake sequence (2016)

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    12660753_Razafindrakoto_CanterburyEqGmSimulations_NZSEE_2016.pdf (5.317Mb)
    Type of Content
    Conference Contributions - Published
    UC Permalink
    http://hdl.handle.net/10092/13177
    
    Publisher
    University of Canterbury. Civil and Natural Resources Engineering
    University of Canterbury. QuakeCore
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    • Engineering: Conference Contributions [2338]
    Authors
    Razafindrakoto, H.N.T.
    Bradley, Brendon cc
    Graves, R.W.
    show all
    Abstract

    In this paper, we perform hybrid broadband (0-10 Hz) ground motion simulations for the ten most significant events (Mw 4.7-7.1) in the 2010-2011 Canterbury earthquake sequence. Taking advantage of having repeated recordings at same stations, we validate our simulations using both recordings and an empirically-developed ground motion prediction equation (GMPE). The simulation clearly captures the sedimentary basin amplification and the rupture directivity effects. Quantitative comparisons of the simulations with both recordings and the GMPE, as well as analyses of the total residuals (indicating model bias) show that simulations perform better than the empirical GMPE, especially for long period. To scrutinize the ground motion variability, we partitioned the total residuals into different components. The total residual appears to be unbiased, and the use of a 3D velocity structure reduces the long period systematic bias particularly for stations located close to the Banks Peninsula volcanic area.

    Citation
    Razafindrakoto, H.N.R., Bradley, B.A., Graves, R.W. (2016) Broadband ground motion simulation of the 2010-2011 Canterbury earthquake sequence. Christchurch, New Zealand: New Zealand Society for Earthquake Engineering Annual Conference, 1-3 April 2016. 8.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    ANZSRC Fields of Research
    40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
    46 - Information and computing sciences::4602 - Artificial intelligence::460207 - Modelling and simulation
    Rights
    https://hdl.handle.net/10092/17651

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    • Low frequency (f=1Hz) ground motion simulations of 10 events in the 2010-2011 Canterbury earthquake sequence 

      Bradley, Brendon; Graves, R.W. (University of Canterbury. Civil and Natural Resources Engineering, 2014)
    • Hybrid broadband simulations of the 2010-2011 Canterbury earthquakes 

      Razafindrakoto, H.N.T.; Bradley, Brendon; Thomson, E.M.; Graves, R.W. (University of Canterbury. Civil and Natural Resources Engineering, 2015)
    • Real-time ground motion simulation workflow 

      Huang, J.; Bae, Sung Eun; Polak, V.; Bradley, Brendon; Razafindrakoto, H.; Thomson, E.; Lee, R.; Nazer, A.; Lagrava, D.; Motha, J. (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 ...
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