Abstract

Relationships among landslides, slope geometry, and river steepness
Track: Disaster and Emergency Management
Authors: Tank Ojha, Peter DeCelles

Landslide activity in Himalayan region is controlled by a complex interaction among geological structures, earthquakes, geomorphic, and meteorological factors. To understand the effects of those factors on existing landslides in far west Nepal geological bedding data and DEM were used to calculate the topographic bedding intersection angles. River steepness indexes were also extracted from DEM. Landslides are found mainly correlated with high angle dip slopes and steep parts of the rivers.