The impact of fault-bend folding and high resolution bathymetry on models of tsunami generation

In subduction zones, the greatest hazard from earthquakes often comes from tsunami waves. However, models linking earthquake slip to tsunamis often fit data poorly (e.g. 2010 M7.8 Mentawai earthquake, Hill et al., 2012). These models typically assume that the seafloor uplift due to earthquake slip can be modelled as an elastic process (e.g. Okada, 1985). We propose to approach seafloor uplift from the perspective of structural geology instead, using models of fault-bend folds to evaluate surface deformation above fault ramps (e.g. Suppe, 1983; Shaw et al., 2005).

Funding Sources: 

  • Earth Observatory of Singapore

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