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Sea Ice Dynamics: The Role Of Broken Ice In Multi-scale Deformation

Sammonds, P; Scourfield, S; Lishman, B; Shortt, M; Bailey, E; Marchenko, A; (2019) Sea Ice Dynamics: The Role Of Broken Ice In Multi-scale Deformation. In: Henry, P-Y and Breteler, MK, (eds.) Trans-national Access in Hydralab+ Proceedings of the Joint User Meeting. (pp. pp. 166-171). Hydralab+: Bucharest, Romania. Green open access

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Abstract

Realistic models of Arctic Ocean behaviour should capture the influence of broken ice acting as a fault gouge between sliding floes. We performed double-direct shear friction tests on floating saline ice floes in the HSVA ARCTECLAB, Large Model Basin, Hamburg. We have focused these experiments on angularity and size to determine fault gouge characteristics. In our experiments the displacements and deformation of ice gouge were characterized during on-going frictional slip for the first time. Both stable sliding and stickslip behaviour were displayed. It appears that there are controls on behaviour according to gouge angularity. By measuring local stress, strain and acoustic emissions along the sliding interfacial fault we have captured the mechanics of the propagation of slip from slip initiation to dynamic propagation for the first time in the presence of broken ice.

Type: Proceedings paper
Title: Sea Ice Dynamics: The Role Of Broken Ice In Multi-scale Deformation
Event: HYDRALAB+ Joint User Meeting
Location: Bucharest, Romania
Dates: 21 May 2019 - 23 May 2019
Open access status: An open access version is available from UCL Discovery
Publisher version: https://hydralab.eu/taking-part/Hydralab-Bucharest...
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Inst for Risk and Disaster Reduction
URI: https://discovery.ucl.ac.uk/id/eprint/10074788
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