Estimation of near-field characteristics of tsunami generation by submarine landslide

Najafi-Jilani, A.; Ataie-Ashtiani, Behzad

doi:10.1016/j.oceaneng.2007.11.006

Cited by 45 publications

(12 citation statements)

References 15 publications

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“…Whereas P was developed for subaerial landslide tsunamis (impulse waves), it does not apply to submarine landslide tsunamis [5,9,25,[39][40][41]. Although some slide parameters are significant for both phenomena, other parameters not considered in P, including the initial slide submergence, are only relevant for underwater landslide tsunamis.…”

Section: Limitationsmentioning

confidence: 99%

A Universal Parameter to Predict Subaerial Landslide Tsunamis?

Heller

Hager

2014

JMSE

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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.

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Section: Limitationsmentioning

confidence: 99%

A Universal Parameter to Predict Subaerial Landslide Tsunamis?

Heller

Hager

2014

JMSE

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“…The details of the experimental setup are provided in [5,12] and a brief description is also provided here. Two inclined planes with adjustable slope from 15 to 60 degrees were made for sliding down solid blocks or sliding materials and another one for observation of run-up of slide-generated waves.…”

Section: Experimental Set-upmentioning

confidence: 99%

Impulsive waves caused by subaerial landslides

2008

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This paper presents the experimental results of impulsive waves caused by subaerial landslides. A wide range of effective parameters are considered and studied by performing 120 laboratory tests. Considered slide masses are both rigid and deformable. The effects of bed slope angle, water depth, slide impact velocity, geometry, shape and deformation on impulse wave characteristics have been inspected. The impulse wave features such as amplitude, period and also energy conversation are studied. The effects of slide Froude number and deformation on energy conversation from slide into wave are also investigated. Based on laboratory measured data an empirical equation for impulse wave amplitude and period have been presented and successfully verified using available data of previous laboratory works.

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“…The runup on an opposing hill slope from the offshore propagating waves generated by landslides has been studied in two-dimensional physical models [Fritz et al, 2001;Ataie-Ashtiani and Najafi-Jilani, 2008;Ataie-Ashtiani and Nik-Khah, 2008;Najafi-Jilani and Ataie-Ashtiani, 2008;Fritz et al, 2009] and in a threedimensional scaled physical model of Sunnylvsfjorden branch of Storfjorden, Norway [Harbitz et al, 2014;Lindstrøm et al, 2014]. Opposing hill slope runup has been investigated in the laboratory and analytically for incident solitary waves [Hall and Watts, 1953;Kishi and Saeki, 1966;Camfield and Street, 1969;Synolakis, 1987;Liu et al, 1995;Madsen and Sch€ affer, 2010;Saelevik et al, 2013], cnoidal waves [Synolakis et al, 1988;Madsen and Sch€ affer, 2010;Chan and Liu, 2012], and periodic waves [Carrier and Greenspan, 1958;Keller and Keller, 1964;Guza and Thornton, 1982;Holman, 1986;Kanoglu and Synolakis, 1998;Madsen and Sch€ affer, 2010].…”

Section: Introductionmentioning

confidence: 99%

Runup of granular landslide‐generated tsunamis on planar coasts and conical islands

McFall

Fritz

2017

JGR Oceans

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Large‐scale physical model experiments of tsunamis generated by granular landslides and volcanic flank collapses are conducted to study the wave runup on both the hill slope laterally adjacent to the landslide and an opposing hill slope. A pneumatic landslide tsunami generator was deployed on planar and convex conical hill slopes to simulate deformable landslides with various geometries and kinematics. On the landslide hill slope, maximum runup and rundown were observed in the landslide impact region followed by adjacent second maxima after the lateral waves were fully formed. The runup and rundown decayed asymptotically from the second maxima. In the conical island scenario, a localized runup amplification was measured on the lee side of the island. Outside the landslide impact region, the effects of the landslide granulometry on the lateral wave runup are minimal. The lateral wave runup on the planar hill slope was generally larger than on the convex conical hill slope outside the landslide impact region. The convex conical hill slope traps less lateral wave energy. The zeroth mode of the edge wave dispersion relation matched the first and second lateral waves on the planar hill slope and the first wave on the convex conical hill slope. Predictive equations for the laterally propagating wave characteristics are derived and a method to predict the runup on an opposing hill slope is presented. The predictive wave and runup equations are benchmarked against the 2007 landslide‐generated tsunami in Chehalis Lake, British Columbia, Canada.

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Estimation of near-field characteristics of tsunami generation by submarine landslide

Cited by 45 publications

References 15 publications

A Universal Parameter to Predict Subaerial Landslide Tsunamis?

A Universal Parameter to Predict Subaerial Landslide Tsunamis?

Impulsive waves caused by subaerial landslides

Runup of granular landslide‐generated tsunamis on planar coasts and conical islands

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