Articles | Volume 23, issue 4
https://doi.org/10.5194/nhess-23-1257-2023
https://doi.org/10.5194/nhess-23-1257-2023
Research article
 | 
04 Apr 2023
Research article |  | 04 Apr 2023

Dynamic response and breakage of trees subject to a landslide-induced air blast

Yu Zhuang, Aiguo Xing, Perry Bartelt, Muhammad Bilal, and Zhaowei Ding

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Cited articles

Adams, J.: Earthquake-dammed lakes in New Zealand, Geology, 9, 215–219, 1881. 
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. 
Bartelt, P., Buser, O., Vera Valero, C., and Bühler, Y.: Configurational energy and the formation of mixed flowing/powder snow and ice avalanches, Ann. Glaciol., 57, 179–188, 2016. 
Bartelt, P., Bebi, P., Feistl, T., Buser, O., and Caviezel, A.: Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts, Nat. Hazards Earth Syst. Sci., 18, 759–764, https://doi.org/10.5194/nhess-18-759-2018, 2018a. 
Bartelt, P., Christen, M., Bühler, Y., and Buser, O.: Thermomechanical modelling of rock avalanches with debris, ice and snow entrainment, in: Numerical Methods in Geotechnical Engineering IX, Taylor & Francis Group, London, 1047–1054, https://doi.org/10.1201/9781351003629-132​​​​​​​, 2018b. 
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Tree destruction is often used to back calculate the air blast impact region and to estimate the air blast power. Here we established a novel model to assess air blast power using tree destruction information. We find that the dynamic magnification effect makes the trees easier to damage by a landslide-induced air blast, but the large tree deformation would weaken the effect. Bending and overturning are two likely failure modes, which depend heavily on the properties of trees.
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