Articles | Volume 23, issue 4
https://doi.org/10.5194/nhess-23-1257-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-23-1257-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Dynamic response and breakage of trees subject to a landslide-induced air blast
Yu Zhuang
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University
of Technology, Chengdu 610059, PR China
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
Perry Bartelt
WSL Institute for Snow and Avalanche Research SLF, Flüelastrasse 11, 7260 Davos Dorf, Switzerland
Muhammad Bilal
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
Zhaowei Ding
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University
of Technology, Chengdu 610059, PR China
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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.
Caviezel, A., Margreth, S., Ivanova, K., Sovilla, B., and Bartelt, P.:
Powder snow impact of tall vibrating structures, in: 8th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2021, edited by: Papadrakakis, M. and Fragiadakis, M., Athens, Greece, 28–30 June 2021, Eccomas Proceedia, 5318–5330, https://doi.org/10.7712/120121.8868.19112, 2021.
Feistl, T., Bebi, P., Christen, M., Margreth, S., Diefenbach, L., and Bartelt, P.: Forest damage and snow avalanche flow regime, Nat. Hazards Earth Syst. Sci., 15, 1275–1288, https://doi.org/10.5194/nhess-15-1275-2015, 2015.
Fujita, K., Inoue, H., Izumi, T., Yamaguchi, S., Sadakane, A., Sunako, S., Nishimura, K., Immerzeel, W. W., Shea, J. M., Kayastha, R. B., Sawagaki, T., Breashears, D. F., Yagi, H., and Sakai, A.: Anomalous winter-snow-amplified earthquake-induced disaster of the 2015 Langtang avalanche in Nepal, Nat. Hazards Earth Syst. Sci., 17, 749–764, https://doi.org/10.5194/nhess-17-749-2017, 2017.
Gardiner, B., Peltola, H., and Kellomäki, S.: Comparison of two models
for predicting the critical wind speeds required to damage coniferous trees,
Ecol. Model., 129, 1–23, 2000.
Grigoryan, S., Urubayev, N., and Nekrasov, I.: Experimental investigation of
an avalanche air blast, Data Glaciology Student, 44, 87–93, 1982.
Johnson, B. C. and Campbell, C. S.: Drop height and volume control the mobility of long-runout landslides on the Earth and Mars, Geophys. Res. Lett., 44, 12091–12097, https://doi.org/10.1002/2017GL076113, 2017.
Jonsson, M. J., Foetzki, A., Kalberer, M., Lundström, T., Ammann, W., and Stöckli, V.: Root-soil rotation stiffness of norway spruce (Picea abies (L.) Karst) growing on subalpine forested slopes, Plant Soil, 285,
267–277, 2006.
Kantola, A. and Mäkelä, A.: Crown development in Norway spruce
[Picea abies (L.) Karst.], Trees, 18, 408–421, 2004.
Kargel, J. S., Leonard, G. J., Shugar, D. H., Kargel, J. S., Leonard, G. J., Shugar, D. H., Haritashya, U. K., Bevington, A., Fielding, E. J., Fujita, K., Geertsema, M., Miles, E. S., Steiner, J., Anderson, E., Bajracharya, S., Bawden, G. W., Breashears, D. F., Byers, A., Collins, B., Dhital, M. R., Donnellan, A., Evans, T. L., Geai, M. L., Glasscoe, M. T., Green, D., Gurung, D. R., Heijenk, R., Hilborn, A., Hudnut, K., Huyck, C., Immerzeel, W. W., Liming, J., Jibson, R., Kääb, A., Khanal, N. R., Kirschbaum, D., Kraaijenbrink, P. D. A., Lamsal, D., Shiyin, L., Mingyang, L., McKinney, D., Nahirnick, N. K., Zhuotong, N., Ojha, S., Olsenholler, J., Painter, T. H., Pleasants, M., Pratima, K. C., Yuan, Q. I., Raup, B. H., Regmi, D., Rounce, D. R., Sakai, A., Donghui, S., Shea, J. M., Shrestha, A. B., Shukla, A., Stumm, D., van der Kooij, M., Voss, K., Xin, W., Weihs, B., Wolfe, D., Lizong, W., Xiaojun, Y., Yoder, M. R., and Young, N.: Geomorphic and geologic controls of geohazards induced by Nepal's 2015 Gorkha earthquake, Science, 351, aac8353, https://doi.org/10.1126/science.aac8353, 2016.
Keshmiri, A., Wu, N., and Wang, Q.: Free Vibration Analysis of a Nonlinearly
Tapered Cone Beam by Adomian Decomposition Method, Int. J. Struct. Stab. Dy., 18, 1850101, https://doi.org/10.1142/S0219455418501018, 2018.
Lundström, T., Jonsson, M. J., and Kalberer, M.: The root-soil system of
Norway spruce subjected to turning moment: resistance as a function of
rotation, Plant Soil, 300, 35–49, 2007.
Mocica, G.: Special Functions Problems, Didactic and Pedagogic
Publishing House, Bucharest, 1988.
Neild, A. S. and Wood, C. J.: Estimating stem and root-anchorage flexibility in trees, Tree Physiol., 19, 141–151, 1999.
Nicoletti, P. G. and Sorriso-Valvo, M.: Geomorphic controls of the shape
and mobility of rock avalanches, Geol. Soc. Am. Bull., 103, 1365–1373, 1991.
Nicoll, B. C., Gardiner, B. A., Rayner, B., and Peace, A. J.: Anchorage of
coniferous trees in relation to species, soil type, and rooting depth,
Can. J. Forest Res., 36, 1871–1883, 2006.
Peltola, H., Kellomäki, S., Väisänen, H., and Ikonen, V.: A
mechanistic model for assessing the risk of wind and snow damage to single
trees and stands of scots pine, norway spruce, and birch, Can. J. Forest Res., 29, 647–661, 1999.
Peltola, H., Kellomäki, S., Hassinen, A., and Granander, M.: Mechanical
stability of Scots pine, Norway spruce and birch: an analysis of
tree-pulling experiments in Finland, Forest Ecol. Manag., 135, 143–153, 2000.
Penna, I. M., Hermanns, R. L., Nicolet, P., Morken, O. A., and Jaboyedoff,
M.: Airblasts caused by large slope collapses, Geol. Soc. Am. Bull., 133, 939–948, 2021.
Pivato, D., Dupont, S., and Brunet, Y.: A simple tree swaying model for
forest motion in windstorm conditions, Trees, 28, 281–293, 2014.
Sellier, D., Brunet, Y., and Fourcaud, T.: A numerical model of tree
aerodynamic response to a turbulent airflow, Forestry, 81, 279–297, 2008.
Shugar, D. H., Jacquemart, M., Shean, D., Bhushan, S., Upadhyay, K., Sattar, A., Schwanghart, W., McBride, S., de Vries, M. Van Wyk, Mergili, M., Emmer, A., Deschamps-Berger, C., McDonnell, M., Bhambri, R., Allen, S., Berthier, E., Carrivick, J. L., Clague, J. J., Dokukin, M., Dunning, S. A., Frey, H.,
Gascoin, S., Haritashya, U. K., Huggel, C., Kääb, A., Kargel, J. S.,
Kavanaugh, J. L., Lacroix, P., Petley, D., Rupper, S., Azam, M. F., Cook, S. J., Dimri, A. P., Eriksson, M., Farinotti, D., Fiddes, J., Gnyawali, K. R., Harrison, S., Jha, M., Koppes, M., Kumar, A., Leinss, S., Majeed, U., Mal, S., Muhuri, A., Noetzli, J., Paul, F., Rashid, I., Sain, K., Steiner, J., Ugalde, F., Watson, C. S., and Westoby, M. J.: A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya, Science, 373, 300–306, 2021.
Šilhán, K.: Tree ring evidence of slope movements preceding
catastrophic landslides, Landslides, 17, 615–626, 2020.
Sukhanov, G.: The mechanism of avalanche air blast formation as derived from
field measurements, Data Glaciology Student, 44, 94–98, 1982.
Yin, Y. P.: Vertical acceleration effect on landsides triggered by the
Wenchuan earthquake, China, Environ. Earth Sci., 71, 4703–4714, 2014.
Yin, Y. P. and Xing, A. G.: Aerodynamic modeling of the yigong gigantic
rock slide-debris avalanche, Tibet, China, B. Eng. Geol. Environ., 71, 149–160, 2012.
Zhang, K. Q., Wang, L. Q., Dai, Z. W., Huang, B. L., and Zhang, Z. H.:
Evolution trend of the Huangyanwo rock mass under the action of reservoir
water fluctuation, Nat. Hazards, 113, 1583–1600, 2022.
Zhuang, Y., Xu, Q., and Xing, A. G.: Numerical investigation of the air
blast generated by the Wenjia valley rock avalanche in Mianzhu, Sichuan,
China, Landslides, 16, 2499–2508, 2019.
Zhuang, Y., Xing, A. G., Jiang, Y. H., Sun, Q., Yan, J. K., and Zhang, Y.
B.: Typhoon, rainfall and trees jointly cause landslides in coastal regions,
Eng. Geol., 298, 106561, https://doi.org/10.1016/j.enggeo.2022.106561, 2022a.
Zhuang, Y., Xu, Q., Xing, A. G., Bilal, M., and Gnyawali, K. R.: Catastrophic air blasts triggered by large ice/rock avalanches, Landslides, 20, 53–64, https://doi.org/10.1007/s10346-022-01967-8, 2022b.
Short summary
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.
Tree destruction is often used to back calculate the air blast impact region and to estimate the...
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