The potential of GIS modelling of gravity flows and slope instabilities

摘要: Abstract The component of gravitational acceleration parallel to the slope local surface partly determines state stability and kinematics flow under gravity on that slope. Geographical information systems based digital elevation models offer potential be able map this variable permit modelling a variety criteria processes including landslides, rock avalanches, pyroclastic flows lava flows. Three types basic operations required run them are discussed. as follows: (i) sites shallow failure (e.g. landslides), (ii) maps deposition energy balance calculations avalanches) (iii) finite difference, initial value type simulations dynamic flows). these hazard assessment is great but their application in specific cases must assessed with reference accuracy model ...