Articles | Volume 12, issue 5
Nat. Hazards Earth Syst. Sci., 12, 1503–1520, 2012
https://doi.org/10.5194/nhess-12-1503-2012
Nat. Hazards Earth Syst. Sci., 12, 1503–1520, 2012
https://doi.org/10.5194/nhess-12-1503-2012

Research article 16 May 2012

Research article | 16 May 2012

The influence of landslide shape and continental shelf on landslide generated tsunamis along a plane beach

E. Renzi1,* and P. Sammarco1 E. Renzi and P. Sammarco
  • 1Università degli Studi di Roma Tor Vergata, Dipartimento di Ingegneria Civile, Via del Politecnico 1, 00133 Rome, Italy
  • *now at: UCD School of Mathematical Sciences, University College Dublin, Belfield, Dublin 4, Ireland

Abstract. This work proposes an advancement in analytical modelling of landslide tsunamis propagating along a plane beach. It is divided into two parts. In the first one, the analytical two-horizontal-dimension model of Sammarco and Renzi (2008) for tsunamis generated by a Gaussian-shaped landslide on a plane beach is revised and extended to realistic landslide shapes. The influence of finiteness and shape of the slide on the propagating waves is investigated and discussed. In the second part, a new model of landslide tsunamis propagating along a semi-plane beach is devised to analyse the role of the continental platform in attenuating the wave amplitude along the shoreline. With these parameters taken into account, the fit with available experimental data is enhanced and the model completed.

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