scholarly journals Simulation on 2D underwater landslide-induced tsunamis

2013 ◽  
Vol 3 (3) ◽  
pp. 032004
Author(s):  
Wenyang Duan ◽  
Binbin Zhao
Keyword(s):  
Underwater Landslide

scholarly journals Boussinesq modeling of surface waves due to underwater landslides

2013 ◽  
Vol 20 (3) ◽  
pp. 267-285 ◽  
Author(s):  
D. Dutykh ◽  
H. Kalisch
Keyword(s):  
Surface Waves ◽  
Shallow Water ◽  
Bottom Topography ◽  
Equations Of Motion ◽  
Boussinesq Equations ◽  
Time Dependent ◽  
Viscous Drag ◽  
Underwater Landslide ◽  
Landslide Mass ◽  
Run Up

Abstract. Consideration is given to the influence of an underwater landslide on waves at the surface of a shallow body of fluid. The equations of motion that govern the evolution of the barycenter of the landslide mass include various dissipative effects due to bottom friction, internal energy dissipation, and viscous drag. The surface waves are studied in the Boussinesq scaling, with time-dependent bathymetry. A numerical model for the Boussinesq equations is introduced that is able to handle time-dependent bottom topography, and the equations of motion for the landslide and surface waves are solved simultaneously. The numerical solver for the Boussinesq equations can also be restricted to implement a shallow-water solver, and the shallow-water and Boussinesq configurations are compared. A particular bathymetry is chosen to illustrate the general method, and it is found that the Boussinesq system predicts larger wave run-up than the shallow-water theory in the example treated in this paper. It is also found that the finite fluid domain has a significant impact on the behavior of the wave run-up.

Chalk Reveals Greatest Underwater Landslide

Science News ◽  
2000 ◽  
Vol 158 (24) ◽  
pp. 373
Author(s):  
Laura Sivitz
Keyword(s):  
Underwater Landslide

scholarly journals Self-Similar Solutions in the Theory of Underwater Landslide Dynamics in Inclined Canyons

2010 ◽  
Vol 4 (1) ◽  
pp. 92-98
Author(s):  
Narcisse Zahibo ◽  
Efim Pelinovsky ◽  
Tatiana Talipova ◽  
Irina Nikolkina
Keyword(s):  
Underwater Landslide ◽  
Self Similar ◽  
Similar Solutions ◽  
Landslide Dynamics

ON GEODYNAMIC CONDITIONS AND UNDERWATER-LANDSLIDE DEFORMATIONS IN THE ULUTAU FORMATION

2020 ◽  
Vol 0 (4) ◽  
pp. 46-52
Author(s):  
T.T. KAZANTSEVA ◽  
Keyword(s):  
Structural Characteristics ◽  
Research Area ◽  
Earth’S Crust ◽  
The West ◽  
Clastic Rocks ◽  
Underwater Landslide ◽  
Tectonic Development ◽  
Earth's Crust ◽  
Folded Structures ◽  
The Village

To understand the features of geodynamics during the accumulation of the systems of geological matter in the Earth's crust at the formation level of the Paleozoic Urals, this paper presents the author's factual materials on structural characteristics of clastic rocks of the flysch sequence of the Ulutau Formation (Middle Devonian Givetian) within the mapping area of the Urtazym zone of the Magnitogorsk Synclinorium. Here, to the west of the village of Tash-Tugay, rhythmites are developed in the lower reaches of the Tanalyk River that show very informative underwater interlayer dislocations: cross-bedding, spherical and folded structures serving as a decisive marker for the synchronism of sedimentation and dislocation. They characterize the deformation period in the tectonic development of the folded region, according to the main points of the thrust-nappe theory of the formation of the Earth's crust and the scientific research area «structural factor in theoretical geology».

scholarly journals Deformation Anomalies Accompanying Tsunami Origination

2021 ◽  
Vol 9 (10) ◽  
pp. 1144
Author(s):  
Grigory Dolgikh ◽  
Stanislav Dolgikh
Keyword(s):  
Gordon Equation ◽  
Experimental Results ◽  
Tsunami Generation ◽  
Sine Gordon Equation ◽  
Laser Strainmeter ◽  
Underwater Landslide ◽  
Deformation Jump ◽  
Earth's Crust ◽  
The Many ◽  
The One

Basing on the analysis of data on variations of deformations in the Earth’s crust, which were obtained with a laser strainmeter, we found that deformation anomalies (deformation jumps) occurred at the time of tsunami generation. Deformation jumps recorded by the laser strainmeter were apparently caused by bottom displacements, leading to tsunami formation. According to the data for the many recorded tsunamigenic earthquakes, we calculated the damping ratios of the identified deformation anomalies for three regions of the planet. We proved the obtained experimental results by applying the sine-Gordon equation, the one-kink and two-kink solutions of which allowed us to describe the observed deformation anomalies. We also formulated the direction of a theoretical deformation jump occurrence—a kink (bore)—during an underwater landslide causing a tsunami.

scholarly journals Momentum Conservative Scheme for Simulating Wave Runup and Underwater Landslide

2019 ◽  
Vol 4 (1) ◽  
pp. 29
Author(s):  
Didit Adytia
Keyword(s):  
Water Waves ◽  
Harmonic Wave ◽  
Equation Model ◽  
Boundary Integral ◽  
Staggered Grid ◽  
Wave Runup ◽  
Tsunami Waves ◽  
Conservative Scheme ◽  
Underwater Landslide ◽  
Grid Scheme

This paper focuses on the numerical modelling and simulation of tsunami waves triggered by an underwater landslide. The equation of motion for water waves is represented by the Nonlinear Shallow Water Equations (NSWE). Meanwhile, the motion of underwater landslide is modeled by incorporating a term for bottom motion into the NSWE. The model is solved numerically by using a finite volume method with a momentum conservative staggered grid scheme that is proposed by Stelling & Duinmeijer 2003 [12].  Here, we modify the scheme for the implementation of bottom motion. The accuracy of the implementation for representing wave runup and rundown is shown by performing the runup of harmonic wave as proposed by Carrier & Greenspan 1958 [2], and also solitary wave runup of Synolakis, 1986 [14], for both breaking and non-breaking cases. For the underwater landslide, result of the simulation is compared with simulation using the Boundary Integral Equation Model (BIEM) that is performed by Lynett and Liu, 2002 [9].

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