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A universal parameter to predict subaerial landslide tsunamis?

Heller, Valentin; Hager, Willi H.

A universal parameter to predict subaerial landslide tsunamis? Thumbnail


Willi H. Hager


The significance of the impulse product parameter P is reviewed, which is believed to be the most universal parameter for subaerial landslide tsunami (impulse wave) prediction. This semi-empirical parameter is based on the streamwise slide momentum flux component and it was refined with a multiple regression laboratory data analysis. Empirical equations based on P allow for a simple prediction of wave features under diverse conditions (landslides and ice masses, granular and block slides, etc.). Analytical evidence reveals that a mass sliding down a hill slope of angle 51.6° results in the highest waves. The wave height ―observed‖ in the 1958 Lituya Bay case was well predicted using P. Other real-world case studies illustrate how efficient empirical equations based on P deliver wave estimates which support hazard assessment. Future applications are hoped to further confirm the applicability of P to cases with more complex water body geometries and bathymetries.
Keywords: hazard


Heller, V., & Hager, W. H. (2014). A universal parameter to predict subaerial landslide tsunamis?. Journal of Marine Science and Engineering, 2(2),

Journal Article Type Article
Acceptance Date Mar 31, 2014
Publication Date Apr 29, 2014
Deposit Date Jul 26, 2016
Publicly Available Date Jul 26, 2016
Journal Journal of Marine Science and Engineering
Electronic ISSN 2077-1312
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 2
Issue 2
Keywords hazard assessment; impulse wave; landslide; landslide tsunami; physical modelling; wave generation
Public URL
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Heller and Hager (2014) A universal parameter to predict subaerial landslide tsunamis.pdf (823 Kb)

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