Underwater Landslide Shape, Motion, Deformation, and Tsunami Generation
نویسندگان
چکیده
We study underwater landslide shape, motion and deformation at early times. We present experimental and numerical results in a search for general behaviors of tsunamigenic underwater landslides. Our experimental work presents a granular mass moving and deforming down a steep incline. Our numerical work uses a Bingham-like fluid model (BING) to simulate more realistic underwater landslide models. We show that both landslide motion and deformation can be described with theoretical predictions derived for solid blocks. We find that it is possible to reduce our results into analytical expressions for shape, motion, and deformation of coherent features.
منابع مشابه
1 Comparing Model Simulations of Three Benchmark Tsunami Generation Cases
Three benchmark cases are proposed to study tsunamis generated by underwater landslides. Two distinct numerical models are applied to each benchmark case. Each model involves distinct center of mass motions and rates of landslide deformation. Computed tsunami amplitudes agree reasonably well for both models, although there are differences that remain to be explained. One of the benchmark cases ...
متن کاملComparing Model Simulations of Three Benchmark Tsunami Generation Cases
Three benchmark cases are proposed to study tsunamis generated by underwater landslides. Two distinct numerical models are applied to each benchmark case. Each model involves distinct center of mass motions and rates of landslide deformation. Computed tsunami amplitudes agree reasonably well for both models, although there are differences that remain to be explained. One of the benchmark cases ...
متن کاملTsunami Generation by Submarine Mass Failure
Numerical experiments are conducted for two-dimensional model problems of tsunami generation by underwater slides and slumps. These problems consist of a semi-ellipse, translating down an incline with a prescribed center of mass motion. For each problem, this motion is derived as a function of geometric and material parameters, and we calculate corresponding characteristic tsunami amplitudes. L...
متن کاملOn the characteristics of landslide tsunamis
This review presents modelling techniques and processes that govern landslide tsunami generation, with emphasis on tsunamis induced by fully submerged landslides. The analysis focuses on a set of representative examples in simplified geometries demonstrating the main kinematic landslide parameters influencing initial tsunami amplitudes and wavelengths. Scaling relations from laboratory experime...
متن کاملComparison between three-dimensional linear and nonlinear tsunami generation models
The modeling of tsunami generation is an essential phase in understanding tsunamis. For tsunamis generated by underwater earthquakes, it involves the modeling of the sea bottom motion as well as the resulting motion of the water above it. A comparison between various models for three-dimensional water motion, ranging from linear theory to fully nonlinear theory, is performed. It is found that f...
متن کامل