Articles | Volume 23, issue 1
https://doi.org/10.5194/nhess-23-293-2023
https://doi.org/10.5194/nhess-23-293-2023
Research article
 | 
26 Jan 2023
Research article |  | 26 Jan 2023

Temporal evolution of crack propagation characteristics in a weak snowpack layer: conditions of crack arrest and sustained propagation

Bastian Bergfeld, Alec van Herwijnen, Grégoire Bobillier, Philipp L. Rosendahl, Philipp Weißgraeber, Valentin Adam, Jürg Dual, and Jürg Schweizer

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2022-161', Anonymous Referee #1, 13 Jul 2022
    • AC1: 'Reply on RC1', Bastian Bergfeld, 17 Nov 2022
  • RC2: 'Comment on nhess-2022-161', Edward Bair, 19 Jul 2022
    • AC2: 'Reply on RC2', Bastian Bergfeld, 17 Nov 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to minor revisions (review by editor) (30 Nov 2022) by Pascal Haegeli
AR by Bastian Bergfeld on behalf of the Authors (01 Dec 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (13 Dec 2022) by Pascal Haegeli
AR by Bastian Bergfeld on behalf of the Authors (20 Dec 2022)  Manuscript 

Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Bastian Bergfeld on behalf of the Authors (24 Jan 2023)   Author's adjustment   Manuscript
EA: Adjustments approved (24 Jan 2023) by Pascal Haegeli
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Short summary
For a slab avalanche to release, the snowpack must facilitate crack propagation over large distances. Field measurements on crack propagation at this scale are very scarce. We performed a series of experiments, up to 10 m long, over a period of 10 weeks. Beside the temporal evolution of the mechanical properties of the snowpack, we found that crack speeds were highest for tests resulting in full propagation. Based on these findings, an index for self-sustained crack propagation is proposed.
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