Related Experiment Video
Updated: Mar 8, 2026

06:27
Simulating Impacts of Ice Storms on Forest Ecosystems
Published on: June 30, 2020
7.5K
Reply to "Comment on 'Critical wind speed at which trees break' ".
E Virot1, A Ponomarenko1,2, É Dehandschoewercker1,2
1LadHyX, CNRS UMR 7646, École Polytechnique, 91128 Palaiseau, France.
Physical Review. E
|January 14, 2017
Summary
This study addresses tree breakage models, emphasizing dominant factors influencing wind speed resistance. Our idealized model identifies essential parameters, capturing observed trends and magnitudes for future research.
Area of Science:
- Physics
- Ecology
- Biomechanics
Background:
- A previous comment questioned the completeness of our tree breakage model.
- The comment suggested missing biomechanical factors in our wind speed analysis.
Purpose of the Study:
- To reaffirm our model's focus on dominant factors in tree breakage.
- To highlight the model's success in capturing observed trends and magnitudes.
- To establish a foundation for more detailed future research.
Main Methods:
- Development of an idealized physical model for tree breakage.
- Analysis of wind speed as a critical factor in tree failure.
- Comparison of model predictions with empirical observations.
Main Results:
- The model successfully identifies key parameters governing tree breakage.
- The model captures both the trends and orders of magnitude of observed phenomena.
- Despite idealizations, the model provides essential insights into tree mechanics.
Conclusions:
- Our idealized model effectively highlights the dominant factors in tree breakage.
- The identified parameters are crucial for understanding wind-induced tree failure.
- This work serves as a vital step towards more sophisticated biomechanical models.
Related Concept Videos
Design Example: Calculating Safe Diameter for Wind-Exposed Disc
369
Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
369
Wind Turbine Machine Models
638
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
638
Drag Force and Terminal Speed
3.6K
An interesting force in everyday life is the force of drag on an object when it is moving in a fluid. Like friction, the drag force always opposes the motion of an object. Unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid. This functionality is complicated and depends upon the shape of the object, its size, its velocity, and the fluid it is in. For most large objects, such as cyclists, cars, and baseballs, that are not moving too...
3.6K
Survival Tree
453
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
453
Speed of Sound in Gases
4.2K
The speed of sound in a gaseous medium depends on various factors. Since gases constitute molecules that are free to move, they are highly compressible. Hence, sound waves travel slowly through gases. Thermodynamics helps us understand the relationship between pressure, volume, and temperature of gases, thus, the speed of sound in an ideal gas can be determined using the laws of thermodynamics. At the same time, Newton's laws of motion and the continuity equation of fluid dynamics also come...
4.2K
Adaptations that Reduce Water Loss
28.4K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
28.4K

