Abstract
Recently, large-sized landslides causing a river blockage due to high magnitude earthquake occur and form a number of landslide dams. The water blocked by the dam may provoke floods which spread out the down stream area, causing damages to human activities and communication lines. The establishment of prediction method of landslide dam formation is expected to prevent these disasters. To clarify the moving mass phenomena of landslide due to earthquake, the equation having high advection velocity is necessary to analyze. This paper discusses a numerical method preventing for numerical oscillation due to the discretization of convection term by using stabilized finite element method combined with slope limiter function method and shock-capturing method of second-order accuracy. The presented analysis method poses the preventive function of numerical oscillation, the accuracy and utility of analysis scheme are confirmed in comparison with model analysis and actual landslide dam phenomena
