Articles | Volume 18, issue 3
07 Mar 2018
 | 07 Mar 2018

Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts

Perry Bartelt, Peter Bebi, Thomas Feistl, Othmar Buser, and Andrin Caviezel

Related authors

Shape still matters: rockfall interactions with trees and deadwood in a mountain forest uncover a new facet of rock shape dependency
Adrian Ringenbach, Peter Bebi, Perry Bartelt, Andreas Rigling, Marc Christen, Yves Bühler, Andreas Stoffel, and Andrin Caviezel
Earth Surf. Dynam., 11, 779–801,,, 2023
Short summary
Dynamic response and breakage of trees subject to a landslide-induced air blast
Yu Zhuang, Aiguo Xing, Perry Bartelt, Muhammad Bilal, and Zhaowei Ding
Nat. Hazards Earth Syst. Sci., 23, 1257–1266,,, 2023
Short summary
Modeling deadwood for rockfall mitigation assessments in windthrow areas
Adrian Ringenbach, Peter Bebi, Perry Bartelt, Andreas Rigling, Marc Christen, Yves Bühler, Andreas Stoffel, and Andrin Caviezel
Earth Surf. Dynam., 10, 1303–1319,,, 2022
Short summary
The impact of terrain model source and resolution on snow avalanche modeling
Aubrey Miller, Pascal Sirguey, Simon Morris, Perry Bartelt, Nicolas Cullen, Todd Redpath, Kevin Thompson, and Yves Bühler
Nat. Hazards Earth Syst. Sci., 22, 2673–2701,,, 2022
Short summary
Full-scale experiments to examine the role of deadwood in rockfall dynamics in forests
Adrian Ringenbach, Elia Stihl, Yves Bühler, Peter Bebi, Perry Bartelt, Andreas Rigling, Marc Christen, Guang Lu, Andreas Stoffel, Martin Kistler, Sandro Degonda, Kevin Simmler, Daniel Mader, and Andrin Caviezel
Nat. Hazards Earth Syst. Sci., 22, 2433–2443,,, 2022
Short summary

Related subject area

Other Hazards (e.g., Glacial and Snow Hazards, Karst, Wildfires Hazards, and Medical Geo-Hazards)
Brief communication: The Lahaina Fire disaster – how models can be used to understand and predict wildfires
Timothy W. Juliano, Fernando Szasdi-Bardales, Neil P. Lareau, Kasra Shamsaei, Branko Kosović, Negar Elhami-Khorasani, Eric P. James, and Hamed Ebrahimian
Nat. Hazards Earth Syst. Sci., 24, 47–52,,, 2024
Short summary
Prediction of natural dry-snow avalanche activity using physics-based snowpack simulations
Stephanie Mayer, Frank Techel, Jürg Schweizer, and Alec van Herwijnen
Nat. Hazards Earth Syst. Sci., 23, 3445–3465,,, 2023
Short summary
Automated Avalanche Terrain Exposure Scale (ATES) mapping – Local validation and optimization in Western Canada
John Sykes, Håvard Toft, Pascal Haegeli, and Grant Statham
Nat. Hazards Earth Syst. Sci. Discuss.,,, 2023
Revised manuscript accepted for NHESS
Short summary
Early warning system for ice collapses and river blockages in the Sedongpu Valley, southeastern Tibetan Plateau
Wei Yang, Zhongyan Wang, Baosheng An, Yingying Chen, Chuanxi Zhao, Chenhui Li, Yongjie Wang, Weicai Wang, Jiule Li, Guangjian Wu, Lin Bai, Fan Zhang, and Tandong Yao
Nat. Hazards Earth Syst. Sci., 23, 3015–3029,,, 2023
Short summary
Fire risk modeling: an integrated and data-driven approach applied to Sicily
Alba Marquez Torres, Giovanni Signorello, Sudeshna Kumar, Greta Adamo, Ferdinando Villa, and Stefano Balbi
Nat. Hazards Earth Syst. Sci., 23, 2937–2959,,, 2023
Short summary

Cited articles

Bartelt, P. and Stöckli, V.: The influence of tree and branch fracture, overturning and debris entrainment on snow avalanche flow, Ann. Glaciol., 32, 209–216, 2001. a
Bozhinskiy, A. N. and Losev, K. S.: The fundamentals of avalanche science, Mitt. Eidgenöss. Inst. Schnee- Lawinenforsch., Davos, p. 280, 1998. a
Chajes, A.: Principles of Structural Stability Theory, Prentice Hall Inc, Englewood Cliffs, p. 336, 1974. a
Clough, R. W. and Penzien, J.: Dynamics of Structures, McGraw-Hill Inc, New York, p. 634, 1975. a, b, c, d, e, f, g
Coutts, M.: Root architecture and tree stability, Plant Soil, 71, 171–188, 1983. a
Short summary
We study how short duration powder avalanche blasts break and overturn tall trees. Tree blow-down is often used to back-calculate avalanche pressure and therefore constrain avalanche flow velocity and motion. We find that tall trees are susceptible to avalanche air blasts because the duration of the air blast is near to the period of vibration of tall trees. Dynamic magnification factors should therefore be considered when back-calculating powder avalanche impact pressures.
Final-revised paper