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Acustic Tomography
Manage episode 481421782 series 3618509
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In this Thursday episode of Talking Trees, we delve into the use of acoustic tomography—specifically the PiCUS Sonic Tomograph and TreeTronic systems—for diagnosing hidden internal decay in trees.
We discuss:
- How sound waves and electrical resistance are used to map internal wood structure without damaging the tree
- The key steps in setting up, calibrating, and interpreting tomograms, including common challenges like the “cogwheel effect”
- Insights into the biology of wood-decay fungi and how tomographic tools can detect and predict the development of decay
- Case studies from managed spruce and oak stands, comparing tomographic data with stump analyses and visual assessments
- The value of combining acoustic and electrical tomography in urban tree risk assessments and long-term tree preservation strategies
Acoustic tomography represents a powerful, non-invasive way to understand what’s going on beneath the bark—helping arborists make informed, science-based decisions.
Background information:
- Göcke. 2017. PiCUS Sonic Tomograph Software Manual Q74.pdf
- Schwarze. 2008. Diagnosis and prognosis of the development of wood decay in urban trees.pdf
- Tamu et al. 2022. The Application of Sonic Tomography (PiCUS 3 Sonic Tomograph) to Detect and Quantify Hidden Wood Decay in Managed Norway Spruce Stands.pdf
- Wang et al. 2007. Acoustic Tomography for Decay Detection in Red Oak Trees.pdf
- iml. 2021. Picus Treetronic Manual.pdf
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Chapters
1. Introduction to Tree Stability Assessment (00:00:00)
2. Understanding Sonic Tomography Basics (00:05:27)
3. Advantages and Limitations Explored (00:11:15)
4. Setting Up the Tomography Process (00:16:31)
5. Measurement and Sensor Placement (00:18:40)
6. Reading Tomogram Colors and Patterns (00:21:03)
7. Decay Science and Real-World Applications (00:26:25)
8. Ethics and Future of Tree Assessment (00:26:41)
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