Toward preliminary hazard assessment using DEM topographic analysis and simple mechanical modeling by means of sloping local base level

摘要

The geomorphological concept of base level is adapted to be useful for landslide hazard assessment. The Sloping Local Base Level (SLBL) is calculated by assuming that all undercut slopes lead to potential unstable volumes. Results for the 1991 Randa rockfall (30 M m~3) area has demonstrated that the SLBL exists. Furthermore, theoretical results for soil slopes are presented showing that SLBL can simulate lystric faults.