Rapid Healing of Thermal Cracks in Ice
Abstract The structural integrity of the arctic sea ice cover is under threat owing largely to the combination of thinning and larger waves. Another contributor may be thermal cracking. In concentrating stress, thermal cracks may weaken the cover. Of interest, therefore, is the strength of thermally...
Published in: | Geophysical Research Letters |
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ftdoajarticles:oai:doaj.org/article:e563006f9e1a458ca5035ed1df22744d 2024-09-15T18:34:55+00:00 Rapid Healing of Thermal Cracks in Ice Andrii Murdza Erland M. Schulson Carl E. Renshaw Arttu Polojärvi 2022-09-01T00:00:00Z https://doi.org/10.1029/2022GL099771 https://doaj.org/article/e563006f9e1a458ca5035ed1df22744d EN eng Wiley https://doi.org/10.1029/2022GL099771 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL099771 https://doaj.org/article/e563006f9e1a458ca5035ed1df22744d Geophysical Research Letters, Vol 49, Iss 17, Pp n/a-n/a (2022) ice cracks healing fracture Geophysics. Cosmic physics QC801-809 article 2022 ftdoajarticles https://doi.org/10.1029/2022GL099771 2024-08-05T17:49:10Z Abstract The structural integrity of the arctic sea ice cover is under threat owing largely to the combination of thinning and larger waves. Another contributor may be thermal cracking. In concentrating stress, thermal cracks may weaken the cover. Of interest, therefore, is the strength of thermally damaged ice. To that end, new experiments were performed on sea ice and on lab‐grown saline and salt‐free ice that had been cracked by thermal shocking. As expected, the cracks weakened the materials in accord with fracture mechanics. However, within tens to hundreds of seconds of shocking, the strength recovered completely, for the ice had healed. Healing is attributed to thermally activated sintering related to surface diffusion, assisted possibly by the formation of a quasi‐liquid layer on crack faces. Whether behavior on the small scale is indicative of behavior on the large scale remains to be determined. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 49 17 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ice cracks healing fracture Geophysics. Cosmic physics QC801-809 |
spellingShingle |
ice cracks healing fracture Geophysics. Cosmic physics QC801-809 Andrii Murdza Erland M. Schulson Carl E. Renshaw Arttu Polojärvi Rapid Healing of Thermal Cracks in Ice |
topic_facet |
ice cracks healing fracture Geophysics. Cosmic physics QC801-809 |
description |
Abstract The structural integrity of the arctic sea ice cover is under threat owing largely to the combination of thinning and larger waves. Another contributor may be thermal cracking. In concentrating stress, thermal cracks may weaken the cover. Of interest, therefore, is the strength of thermally damaged ice. To that end, new experiments were performed on sea ice and on lab‐grown saline and salt‐free ice that had been cracked by thermal shocking. As expected, the cracks weakened the materials in accord with fracture mechanics. However, within tens to hundreds of seconds of shocking, the strength recovered completely, for the ice had healed. Healing is attributed to thermally activated sintering related to surface diffusion, assisted possibly by the formation of a quasi‐liquid layer on crack faces. Whether behavior on the small scale is indicative of behavior on the large scale remains to be determined. |
format |
Article in Journal/Newspaper |
author |
Andrii Murdza Erland M. Schulson Carl E. Renshaw Arttu Polojärvi |
author_facet |
Andrii Murdza Erland M. Schulson Carl E. Renshaw Arttu Polojärvi |
author_sort |
Andrii Murdza |
title |
Rapid Healing of Thermal Cracks in Ice |
title_short |
Rapid Healing of Thermal Cracks in Ice |
title_full |
Rapid Healing of Thermal Cracks in Ice |
title_fullStr |
Rapid Healing of Thermal Cracks in Ice |
title_full_unstemmed |
Rapid Healing of Thermal Cracks in Ice |
title_sort |
rapid healing of thermal cracks in ice |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1029/2022GL099771 https://doaj.org/article/e563006f9e1a458ca5035ed1df22744d |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Geophysical Research Letters, Vol 49, Iss 17, Pp n/a-n/a (2022) |
op_relation |
https://doi.org/10.1029/2022GL099771 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL099771 https://doaj.org/article/e563006f9e1a458ca5035ed1df22744d |
op_doi |
https://doi.org/10.1029/2022GL099771 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
17 |
_version_ |
1810477151579799552 |