Landslides -- Mathematical models, Landslides -- Oregon -- Portland, Earthflows -- Oregon -- Portland
LIDAR and topographic data were used to identify areas of high landslide susceptibility. An arctangent equation was used to calculate slope angle, design criteria of susceptibility and designate zones of high, moderate, and low risk.
Handrich, Tracy E.
"Landslide Susceptibility in Tryon State Park, Oregon,"
1, Article 1.