Principles of the tool Rockfor.net for quantifying the rockfall hazard below a protection forest

There are presently no clear rules for determining optimal rockfall protection forests, taking into account forest and site characteristics as well as the size and energy of the falling rock. To provide a tool that meets these requirements and quantifies the protective capacity, we have developed Rockfor.net (www.rockfor.net). This paper explains the underlying principles as well as the calculation methods used. Furthermore, it presents case studies which provide validation.

[1]  Luciano Broilli.  Ein Felssturz im Großversuch , 1974 .

[2]  G. Meissl.  Modellierung der Reichweite von Felsstürzen : Fallbeispiele zur GIS-gestützten Gefahrenbeurteilung aus dem Bayerischen und Tiroler Alpenraum , 1998 .

[3]  A. Heim.  Bergsturz und Menschenleben , 1932 .

[4]  S. Evans,et al.  The assessment of rockfall hazard at the base of talus slopes , 1993 .

[5]  F. Berger,et al.  Real-size experiments and 3-D simulation of rockfall on forested and non-forested slopes , 2006 .

[6]  R. Spang,et al.  Optimized Rockfall Protection By'ROCKFALL' , 1995 .

[7]  Zusammenfassung und Schlussfolgerungen aus den Modellrechnungen , 1977 .

[8]  H. Kienholz,et al.  Rockfalls into forests: Analysis and simulation of rockfall trajectories — considerations with respect to mountainous forests in Switzerland , 2004 .

[9]  Ronald Toppe,et al.  Terrain models — A tool for natural hazard mapping , 2007 .

[10]  F. Berger,et al.  Mechanisms, effects and management implications of rockfall in forests , 2005 .

[11]  P. Brang.  Resistance and elasticity: promising concepts for the management of protection forests in the European Alps , 2001 .

[12]  Frédéric Berger,et al.  Stem breakage of trees and energy dissipation during rockfall impacts. , 2006, Tree physiology.

[13]  M. Stoffel,et al.  Assessing the protective effect of mountain forests against rockfall using a 3D simulation model , 2006 .

[14]  Theodor H. Erismann,et al.  Dynamics of rockslides and rockfalls , 2001 .

[15]  Sonja Vospernik,et al.  Forest management decision support for evaluating forest protection effects against rockfall , 2005 .

[16]  Walter Bitterlich,et al.  The relascope idea. Relative measurements in forestry. , 1984 .

[17]  H. Kienholz,et al.  ASSESSMENT OF GEOMORPHIC HAZARDS AND PRIORITIES FOR FOREST MANAGEMENT ON THE RIGI NORTH FACE, SWITZERLAND , 1994 .

[18]  M. Selby,et al.  Hillslope materials and processes , 1982 .

[19]  Olivier Gimenez,et al.  Environmental influence on canopy phenology in the dry tropics , 2005 .