Landslide Wave and Tsunami Eddy

Oral

1171 - A Two-Layer Non-Hydrostatic Landslide Model For Tsunami Generation On Irregular Bathymetry

Presenting Author(s)

• 

  Cheng Zhang, PhD

  Research assistant
  Center for Applied Coastal Research, Department of Civil and Environmental Engineering, University of Delaware

Additional Author #1(s)

• JK

  James Kirby

  University of Delaware

Additional Author #2(s)

• SG

  Stephan Grilli

Additional Author #3(s)

• FS

  Fengyan Shi

  Center for Applied Coastal Research, University of Delaware

Additional Author #4(s)

• GM

  Gangfeng Ma

In this study, a two-layer landslide model is presented for investigating submarine landslides and generated waves that propagate over irregular bathymetry. The landslide is described as either a mudflow or a fully saturated granular flow, which are distinguished by using different rheological closure based on physical principles. Depth-averaged governing equations for the landslide are derived in a regular Cartesian coordinate system, and take into account the effect of vertical acceleration and interface traction from the upper-layer water.Tsunami waves generated by the landslide are simulated by the three-dimensional non-hydrostatic wave model NHWAVE (Ma et al., 2012).