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Cook, S.J., Tonkin, T.N. 
ORCID: 0000-0002-4695-6759, Midgley, N.G. ORCID: 0000-0003-0076-1785 and Wicikowski, A.,
2015.
Analysis of ‘hummocky moraine’ using Structure-from-Motion photogrammetry.
North West Geography, 15 (1), pp. 9-18.
ISSN 1476-1580
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Abstract
This study presents results of a high-resolution topographic survey of the proglacial area of Austre Lovénbreen, Svalbard. Structure-from-Motion (SfM) was used to generate a digital elevation model (DEM) of the proglacial zone from aerial imagery. This DEM is used to explore the topography of a zone of hummocky moraine within the glacier ’s Neoglacial limit. The origin of hummocky moraine has proven controversial, but detailed morphological studies can contribute to a better understanding of how these features form, and the extent to which they may be preserved in the palaeo-glaciological record, including within northwest Britain. In cross-profile, hummocky moraine is characterised by a sequence of asymmetrical ridges, with longer, low angle up-glacier faces, and shorter, steeper down-glacier faces. This profile is interpreted to represent a sequence of ridges stacked-up against a bedrock riegel and reverse bedslope. Whilst the origin of these features is uncertain, the enhanced compression associated with glacier flow against a bedrock riegel, possibly during a glacier surge, may have been sufficient to have generated debris-rich englacial thrusts that subsequently melted-out to form the observed hummocky moraine. The significance of this research highlights ongoing studies aimed at understanding the origin and palaeo-glaciological significance of hummocky moraine in northwest Britain.
| Item Type: | Journal article |
|---|---|
| Publication Title: | North West Geography |
| Creators: | Cook, S.J., Tonkin, T.N., Midgley, N.G. and Wicikowski, A. |
| Publisher: | Manchester Geographical Society |
| Place of Publication: | Manchester |
| Date: | 2015 |
| Volume: | 15 |
| Number: | 1 |
| ISSN: | 1476-1580 |
| Divisions: | Schools > School of Animal, Rural and Environmental Sciences |
| Record created by: | EPrints Services |
| Date Added: | 09 Oct 2015 09:54 |
| Last Modified: | 04 Feb 2022 14:15 |
| URI: | https://irep.ntu.ac.uk/id/eprint/4713 |
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