Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts
We study how short duration powder avalanche blasts can break and overturn tall trees. Tree blow-down is often used to back-calculate avalanche pressure and therefore constrain avalanche flow velocity and motion. We find that tall trees are susceptible to avalanche air blasts because the duration...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-03-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | https://www.nat-hazards-earth-syst-sci.net/18/759/2018/nhess-18-759-2018.pdf |
| _version_ | 1811325107962904576 |
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| author | P. Bartelt P. Bebi T. Feistl O. Buser A. Caviezel |
| author_facet | P. Bartelt P. Bebi T. Feistl O. Buser A. Caviezel |
| author_sort | P. Bartelt |
| collection | DOAJ |
| description | We study how short duration powder avalanche blasts can break and overturn
tall trees. Tree blow-down is often used to back-calculate avalanche pressure
and therefore constrain avalanche flow velocity and motion. We find that tall
trees are susceptible to avalanche air blasts because the duration of the air
blast is near to the period of vibration of tall trees, both in bending and
root-plate overturning. Dynamic magnification factors for bending and
overturning failures should therefore be considered when back-calculating
avalanche impact pressures. |
| first_indexed | 2024-04-13T14:27:15Z |
| format | Article |
| id | doaj.art-6bb2c71bb74744899b782a7aa7dc07c6 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-04-13T14:27:15Z |
| publishDate | 2018-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-6bb2c71bb74744899b782a7aa7dc07c62022-12-22T02:43:16ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812018-03-011875976410.5194/nhess-18-759-2018Dynamic magnification factors for tree blow-down by powder snow avalanche air blastsP. Bartelt0P. Bebi1T. Feistl2O. Buser3A. Caviezel4WSL Institute for Snow and Avalanche Research SLF, Flüelastrasse 11, 7260 Davos Dorf, SwitzerlandWSL Institute for Snow and Avalanche Research SLF, Flüelastrasse 11, 7260 Davos Dorf, SwitzerlandLawinenwarnzentrale im bayerischen Landesamt für Umwelt, Hessstrasse 128, 80797 Munich, GermanyLawinenwarnzentrale im bayerischen Landesamt für Umwelt, Hessstrasse 128, 80797 Munich, GermanyWSL Institute for Snow and Avalanche Research SLF, Flüelastrasse 11, 7260 Davos Dorf, SwitzerlandWe study how short duration powder avalanche blasts can break and overturn tall trees. Tree blow-down is often used to back-calculate avalanche pressure and therefore constrain avalanche flow velocity and motion. We find that tall trees are susceptible to avalanche air blasts because the duration of the air blast is near to the period of vibration of tall trees, both in bending and root-plate overturning. Dynamic magnification factors for bending and overturning failures should therefore be considered when back-calculating avalanche impact pressures.https://www.nat-hazards-earth-syst-sci.net/18/759/2018/nhess-18-759-2018.pdf |
| spellingShingle | P. Bartelt P. Bebi T. Feistl O. Buser A. Caviezel Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts Natural Hazards and Earth System Sciences |
| title | Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts |
| title_full | Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts |
| title_fullStr | Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts |
| title_full_unstemmed | Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts |
| title_short | Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts |
| title_sort | dynamic magnification factors for tree blow down by powder snow avalanche air blasts |
| url | https://www.nat-hazards-earth-syst-sci.net/18/759/2018/nhess-18-759-2018.pdf |
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