Dynamic magnification factors for  tree blow-down by powder snow avalanche air blasts

Bartelt, Perry; Bebi, Peter; Feistl, Thomas; Buser, Othmar; Caviezel, Andrin

doi:https://doi.org/10.5194/nhess-18-759-2018

Articles | Volume 18, issue 3

https://doi.org/10.5194/nhess-18-759-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-18-759-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 3

07 Mar 2018

| 07 Mar 2018

Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts

Perry Bartelt, Peter Bebi, Thomas Feistl, Othmar Buser, and Andrin Caviezel

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Final revised paper (published on 07 Mar 2018)
Preprint (discussion started on 07 Jul 2017)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Comment to `Dynamic magnification factors for tree blow-down by powder snow avalanche air blasts´', Anonymous Referee #1, 28 Sep 2017
- AC1: 'Reply to Reviewers / Reply to Editor', Perry Bartelt, 13 Dec 2017
RC2: 'Review', Anonymous Referee #2, 28 Nov 2017
- AC2: 'Reply to reviewers: Brief communication. Tree blow-down by powder snow avalanche air blasts', Perry Bartelt, 03 Jan 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (24 Jan 2018) by Oded Katz

AR by Perry Bartelt on behalf of the Authors (26 Jan 2018) Author's response Manuscript

ED: Publish as is (01 Feb 2018) by Oded Katz

Short summary

We study how short duration powder avalanche blasts 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. Dynamic magnification factors should therefore be considered when back-calculating powder avalanche impact pressures.