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DC Field | Value | Language |
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dc.contributor.author | Micallef, Aaron | - |
dc.contributor.author | Masson, Douglas G. | - |
dc.contributor.author | Berndt, Christian | - |
dc.contributor.author | Stow, Dorrik A.V. | - |
dc.date.accessioned | 2018-02-22T09:38:16Z | - |
dc.date.available | 2018-02-22T09:38:16Z | - |
dc.date.issued | 2007 | - |
dc.identifier.citation | Micallef, A., Masson, D. G., Berndt, C., & Stow, D. A. (2007). Morphology and mechanics of submarine spreading: A case study from the Storegga Slide. Journal of Geophysical Research: Earth Surface, 112(F3023), 1-21. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar//handle/123456789/27192 | - |
dc.description.abstract | Spreading is a common type of ground failure in subaerial environments. However, this type of mass movement has hardly been documented in submarine settings. In this paper we show that spreading covers at least 25% of the Storegga Slide scar area, a giant submarine slide located offshore mid-Norway. The morphological signature of spreading is a repetitive pattern of ridges and troughs oriented perpendicular to the direction of movement. Two modes of failure can be identified: retrogressive failure of the headwall and slab failure and extension, both involving the breakup of a sediment unit into coherent blocks. These blocks are displaced downslope along planar slip surfaces. Limit equilibrium modeling indicates that loss of support and seismic loading are the main potential triggering mechanisms. The extent of displacement of the spreading sediment is controlled by gravitationally induced stress, angle of internal friction of the sediment, pore pressure escape, and friction. The resulting block movement pattern entails an exponential increase of displacement and thinning of the failing sediment with distance downslope. Sediment properties explain the remaining spatial variation of ridge and trough morphologies associated with spreading. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Wiley-Blackwell Publishing, Inc. | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Marine ecology -- Arctic Ocean | en_GB |
dc.subject | Submarine topography -- Norwegian Sea | en_GB |
dc.subject | Sediments (Geology) -- Analysis | en_GB |
dc.title | Morphology and mechanics of submarine spreading : a case study from the Storegga Slide | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1029/2006jf000739 | - |
dc.publication.title | Journal of Geophysical Research: Earth Surface | en_GB |
Appears in Collections: | Scholarly Works - FacSciGeo |
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File | Description | Size | Format | |
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Morphology_and_mechanics_of_submarine_spreading.pdf | 3.51 MB | Adobe PDF | View/Open |
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