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wiki:protection_forest_calc [2018/11/27 10:57] marsthwiki:protection_forest_calc [2020/11/27 11:28] (current) katharinalapin
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 **(3) Calculate avalanche cost path:**<font inherit/inherit;;windowtext;;inherit>The cost path represents the easiest way down a slope following the highest elevation differences from one raster pixel to the next. In Arc GIS this can be accomplished with the tool (cost path) using the Flow-Direction as Cost Backlink raster and the DEM as Cost Distance Raster.</font> **(3) Calculate avalanche cost path:**<font inherit/inherit;;windowtext;;inherit>The cost path represents the easiest way down a slope following the highest elevation differences from one raster pixel to the next. In Arc GIS this can be accomplished with the tool (cost path) using the Flow-Direction as Cost Backlink raster and the DEM as Cost Distance Raster.</font>
  
-**(4) Calculate energy line angle for every release area:**<font inherit/inherit;;windowtext;;inherit>The energy line,</font><font inherit/inherit;;windowtext;;inherit>or</font><font inherit/inherit;;windowtext;;inherit>generalized</font><font inherit/inherit;;windowtext;;inherit>gradient</font><font inherit/inherit;;windowtext;;inherit>, represents the angle of the connecting line from the release point and the outer edge of the run out zone of a mass movement with the horizontal plan. (Bauerhansel et al 2009)</font>+**(4) Calculate energy line angle for every release area:**<font inherit/inherit;;windowtext;;inherit>The energy line,</font><font inherit/inherit;;windowtext;;inherit>or</font><font inherit/inherit;;windowtext;;inherit>'generalized</font><font inherit/inherit;;windowtext;;inherit>gradient</font><font inherit/inherit;;windowtext;;inherit>'</font><font inherit/inherit;;windowtext;;inherit>, represents the angle of the connecting line from the release point and the outer edge of the run out zone of a mass movement with the horizontal plan. (Bauerhansel et al 2009)</font>
  
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 **(15) Backlink intersections of hazard potential and damage potential to release areas:**In the case of avalanches all the transition zones that intersect with infrastructure have to be traced back to the corresponding release area. Using Raster in ArcGIS, this can be done by inverting the DEM and performing a new cost path analysis starting from the intersected damage potential areas. Finally, by combining the avalanche release and transition zones as well as rockfall transition zones that possibly harm infrastructure we are able to identify Object-protecting forest. **(15) Backlink intersections of hazard potential and damage potential to release areas:**In the case of avalanches all the transition zones that intersect with infrastructure have to be traced back to the corresponding release area. Using Raster in ArcGIS, this can be done by inverting the DEM and performing a new cost path analysis starting from the intersected damage potential areas. Finally, by combining the avalanche release and transition zones as well as rockfall transition zones that possibly harm infrastructure we are able to identify Object-protecting forest.
  
-{{:en:protection_forest_flowchart_f1.jpg?nolink&1643x2001}}+{{:en:protection_forest_flowchart_f1.jpg?nolink&1643x2001|protection_forest_flowchart_f1.jpg}}
  
-{{:en:test_legens.jpg?nolink&500x297}}+{{:en:test_legens.jpg?nolink&500x297|test_legens.jpg}}
  
 <font 18px/inherit;;inherit;;inherit>**Flowchart depicting the procedures used to derive the supply, flow and demand indicators**</font> <font 18px/inherit;;inherit;;inherit>**Flowchart depicting the procedures used to derive the supply, flow and demand indicators**</font>
wiki/protection_forest_calc.1543312640.txt.gz · Last modified: 2018/11/27 10:57 by marsth