Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 3.102
IF3.102
IF 5-year value: 3.284
IF 5-year
3.284
CiteScore value: 5.1
CiteScore
5.1
SNIP value: 1.37
SNIP1.37
IPP value: 3.21
IPP3.21
SJR value: 1.005
SJR1.005
Scimago H <br class='widget-line-break'>index value: 90
Scimago H
index
90
h5-index value: 42
h5-index42
Preprints
https://doi.org/10.5194/nhess-2019-396
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-2019-396
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  20 Jan 2020

20 Jan 2020

Review status
This preprint is currently under review for the journal NHESS.

An efficient two-layer landslide-tsunami numerical model: effects of momentum transfer validated with physical experiments of waves generated by granular landslides

Martin Franz1, Michel Jaboyedoff1, Ryan P. Mulligan2, Yury Podladchikov1, and W. Andy Take2 Martin Franz et al.
  • 1Institute of Earth Sciences, University of Lausanne, Lausanne, CH-1015, Switzerland
  • 2Department of Civil Engineering, Queen's University, Kingston, ON K7L 3N6, Ontario, Canada

Abstract. A landslide-generated tsunami is a complex phenomenon that involves landslide dynamics, wave dynamics and their interaction. Numerous lives and infrastructures around the world are threatened by these events.

Predictive numerical models are a suitable tool to assess this natural hazard. However, the complexity of this phenomenon causes such models to be either computationally inefficient or unable to handle the overall process. Our model, which is based on shallow water equations, is developed to address these two problems. In our model, the two materials are treated as two different layers, and their interaction is resolved by momentum transfer inspired by elastic collision principles.

The goal of this study is to demonstrate the validity of our model through benchmark tests based on physical experiments performed by Miller et al. (2017). A dry case is reproduced to validate the behaviour of the landslide propagation model using different rheological laws and to determine which law performs the best. In addition, a wet case is reproduced to investigate the influence of different still water levels on both the landslide deposit and the generated waves.

The numerical results are in good agreement with the physical experiments, thereby confirming the validity of our model, particularly concerning the novel momentum transfer approach.

Martin Franz et al.

Interactive discussion

Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Martin Franz et al.

Martin Franz et al.

Viewed

Total article views: 425 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
307 107 11 425 11 15
  • HTML: 307
  • PDF: 107
  • XML: 11
  • Total: 425
  • BibTeX: 11
  • EndNote: 15
Views and downloads (calculated since 20 Jan 2020)
Cumulative views and downloads (calculated since 20 Jan 2020)

Viewed (geographical distribution)

Total article views: 363 (including HTML, PDF, and XML) Thereof 361 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 29 Sep 2020
Publications Copernicus
Download
Short summary
A landslide-generated tsunami is a complex phenomenon that involves landslide dynamics, wave dynamics and their interaction. This phenomenon threatens numerous lives and infrastructures around the world. To assess this natural hazard, we developed an efficient numerical model able to simulate the landslide, the momentum transfer and the wave, all at once. The good agreement between the numerical simulations and physical experiments validates our model and its novel momentum transfer approach.
A landslide-generated tsunami is a complex phenomenon that involves landslide dynamics, wave...
Citation
Altmetrics