Reactions and energy absorption of trees subject to rockfall: a detailed assessment using a new experimental method.

@article{Lundstrm2009ReactionsAE,
  title={Reactions and energy absorption of trees subject to rockfall: a detailed assessment using a new experimental method.},
  author={Tor Lundstr{\"o}m and Martin Jonsson and Axel Volkwein and Markus Stoffel},
  journal={Tree physiology},
  year={2009},
  volume={29 3},
  pages={
          345-59
        }
}
A new method for investigating the detailed reaction and the energy absorption of trees during a rock impact was developed and applied to 15 subalpine Norway spruce (Picea abies L. Karst) trees. A wedge-shaped trolley, guided by prestressed steel wires, was mounted on a forested slope to simulate a falling rock. The trolley accelerates down the wires and hits a tree at a preselected stem height with variable energies. The tree displacements and accelerations during the impact were recorded to… CONTINUE READING

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