A Numerical Model for Predicting the Effects of Landslide-Generated Water Waters

A numerical model for the generation and propagation of landslide-generated water waves in reservoirs is developed. Only two-dimensional hydrodynamic quantities are obtained from the program; however, a pseudo three-dimensional effect is present since the three-dimensional geometry of an actual reservoir can be represented. The model provides an approach to the evaluation of the first wave crest that may result from potential landslide regions located on reservoirs. Arbitrary landslide volumes, reservoir depths, slide propagation velocity, slide shape, and initial and final location of the slide can be considered. The numerical results have been compared with experimental results obtained on a 1:120 undistorted scale model of Libby Dam and Lake Koocanusa in Montana.