Landslide tsunami case studies using a Boussinesq model and a fully nonlinear tsunami generation model

By P. Watts, Stephan T. Grilli, James T. Kirby, G. Fryer, D. Tappin. 2003

347 citations recorded by the source corpus.

Case studies of landslide tsunamis require integration of marine geology data and interpretations into numerical simulations of tsunami attack. Many landslide tsunami generation and propagation models have been proposed in recent time, further motivated by the 1998 Papua New Guinea event. However, few of these models have proven capable of integrating the best available marine geology data and interpretations into successful case studies that reproduce all available tsunami observations and records. We show that nonlinear and dispersive tsunami propagation models may be necessary for many landslide tsunami case studies. GEOWAVE is a comprehensive tsunami simulation model formed in part by combining the Tsunami Open and Progressive Initial Conditions System (TOPICS) with the fully non-linear Boussinesq water wave model FUNWAVE. TOPICS uses curve fits of numerical results from a fully nonlinear potential flow model to provide approximate landslide tsunami sources for tsunami propagation models, based on marine geology data and interpretations. In this work, we validate GEOWAVE with successful case studies of the 1946 Unimak, Alaska, the 1994 Skagway, Alaska, and the 1998 Papua New Guinea events. GEOWAVE simulates accurate runup and inundation at the same time, with no additional user interference or effort, using a slot technique. Wave breaking, if it occurs during shoaling or runup, is also accounted for with a dissipative breaking model acting on the wave front. The success of our case studies depends on the combination of accurate tsunami sources and an advanced tsunami propagation and inundation model.

Subfields: Civil and Structural Engineering, Earth-Surface Processes, Geophysics

View Paper: https://www.semanticscholar.org/paper/8b53a62ff03a928bf294b574eb2a1ef8c4ad0a56

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Citations in the corpus

Tsunami Generation by Submarine Mass Failure. I: Modeling, Experimental Validation, and Sensitivity Analyses (2005, methodology): “Such 3D elevations can be used in case studies as input for standard long wave models of tsunami propagation Watts et al. 2003 .”
Tsunami modelling with adaptively refined finite volume methods* (2011, background): “…there are some situations where it may be important to include dispersive terms (González and Kulikov 1993, Saito, Matsuzawa, Obara and Baba 2010), particularly for shorter-wavelength waves arising from submarine landslides, as discussed for example by Watts et al. (2003) or Lynett and Liu (2002).”
Tsunami Generation by Submarine Mass Failure. II: Predictive Equations and Case Studies (2005, methodology): “To carry out a rapid case study with our predictive equations, we consider the tsunami amplitudes produced by three plausible underwater slides in isolation, whose characteristics emerge from various published references: slide A along the front of the Skagway river delta, slide B southwest of the r”
Numerical simulation of tsunami waves generated by deformable submarine landslides (2013, background): “, 2002), Boussinesq equations (Lynett and Liu, 2003; Watts et al., 2003; Fuhrman and Madsen, 2009; Zhou and Teng, 2010), non-hydrostatic wave equations (Ma et al.”
Numerical Simulation of the 2011 Tohoku Tsunami Based on a New Transient FEM Co-seismic Source: Comparison to Far- and Near-Field Observations (2013, methodology): “These were initially applied to the simulation of landslide tsunamis, in which dispersive effects are important owing to the shorter wavelengths (WATTS et al. 2003; DAY et al. 2005; TAPPIN et al. 2008; ABADIE et al. 2012), but more recently also to the simulation of coseismic tsunamis (GRILLI et…”