In Japan, wide]scale measurement forsabo works was conducted from 2008 to 2010 using laser profilers (LPs) with a standard data format. These LP data provide detailed topographic information on areas prone to sediment]related disaster. Therefore, widespread use of these data is expected in crisis management and sabo work research. However, because software applications for LP data are lacking, these data are not effectively used at present. In this paper, we used LP topographic data to improve the accuracy of Kanako 2D, GUI equipped debris flow simulations. We focused on a method to easily produce appropriate landform data for the simulation using the standard LP data maintained for current sabo works. We also concentrated on constructing a comprehensive debris flow simulation system based on a geographical information system (GIS) to enable visualization of the results. The use of accurate topographical data produced reasonable analytical results. This is a very useful tool for debris flow prediction and sabo planning. We refer to the system we developed as gHyper KANAKO".

Key wordsFlaser profilers (LPs), topographic information, KANAKO2D, debris flow simulation, GIS, Hyper KANAKO