A Simple Model for Simulating Tornado Damage in Forests
Public Deposited- Creator
-
Holland, Andrew
- Affiliation: University of North Carolina at Chapel Hill
-
Riordan, Allen
- Other Affiliation: North Carolina State University
-
Franklin, E. C.
- Other Affiliation: North Carolina State University
- Abstract
- An analytical model is presented to describe patterns of downed trees produced by tornadic winds. The model uses a combined Rankine voitex of specified tangential and radial components to describe a simple tornado circulation. A total wind field is then computed by adding the forward motion of the vortex. The lateral and vertical forces on modeled tree stands are then computed and are compared with physical characteristics of Scots and loblolly pine. From this model, patterns of windfall are computed and are compared to reveal three basic damage patterns: cross-track symmetric, along-track asymmetric, and criss-cross asymmetric. These patterns are shown to depend on forward speed, radial speed, and tree resistance. It is anticipated that this model will prove to be useful in assessing storm characteristics from damage patterns observed in forested areas.
- Date of publication
- 2006
- Keyword
- Dommage catastrophe naturelle
- Peuplement forestier artificiel
- Coniferales
- Simulation numérique
- Classification
- natural disaster damages
- Trajectoire
- Spermatophyta
- Softwood forest tree
- Tornade
- Pinus
- Tornado
- Severe weather
- trajectory
- Plantae
- Pinaceae
- Distribution vent
- Temps violent
- Arbre forestier résineux
- Artificial forest stand
- Wind field
- Forêt
- digital simulation
- gymnosperms
- classification
- forests
- DOI
- Identifier
- https://dx.doi.org/10.1175/JAM2413.1
- Onescience ID: c69bfb8c048fcf2b6d095dd627cd47afb5ed5296
- Resource type
- Article
- Rights statement
- In Copyright
- Journal title
- Journal of Applied Meteorology and Climatology
- Journal volume
- 45
- Journal issue
- 12
- Page start
- 1597
- Page end
- 1611
- Language
- English
- ISSN
- 1558-8432
- 1558-8424
Relations
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