Abstract
Subaerial landslides sliding into shallow water are physically modeled in a three-dimensional wave basin. The generated impulse waves are highly nonlinear, and a large-scale splash zone is formed above the waves. Such impulse wave characteristics are different from those from landslides into deep water that are completely submerged after sliding. The recorded wave profiles included three wave types, namely nonlinear oscillatory wave, nonlinear transition wave and bore-like wave, mainly depending on the relative slide thickness and slide Froude number at impact. Bore-like waves were possible produced only by landslides into shallow water in three-dimensional experiments. The conversion rate of landslide kinetic energy at impact into the wave train energy is 1 to 18%. Energy conversion characteristics are compared with other two- and three-dimensional studies on landslide-generated waves and the results are discussed.
Highlights
Subaerial landslides sliding into shallow water are physically modeled in a three-dimensional wave basin
According to the study’s results of two-dimensional block slide experiments by N oda[38] and two-dimensional granular slide experiments by Fritz et al.[12], impulse waves generated by landslides were classified into nonlinear oscillatory waves, nonlinear transition waves, solitary-like waves and dissipative transient bores based on the landslide Froude number and relative slide thickness at impact
Based on the Froude similitude, impulse waves induced by three-dimensional rock landslides are physically modeled, and the wave types and energy conversion of subaerial landslide generated impulse waves were investigated
Summary
Subaerial landslides sliding into shallow water are physically modeled in a three-dimensional wave basin. The attention is focused on the topic of wave type classification and energy conversion of landslide-generated impulse waves in shallow water in reservoirs. The physical experiments on impulse waves generated by landslide into shallow water were conducted in a three-dimensional wave basin.
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