| It is important to clarify the motion mechanism of landslides for reasonable prevention. Recently, video cameras have been set up at some sites where landslide collapse may occur. Video images of the collapse process captured at two landslide sites in Japan are obtained. The Particle Image Velocimetry (PIV) method, which is one of the typical techniques for velocity vector detection, is applied to the video images in order to understand the landslide collapse. As a result, the surface movement of the landslides is analyzed in detail, and it is suggested the possibility to estimate the inner movement of landslide blocks. |
