Falcini, Francesca, Krabbendam, Maarten, Selby, Katherine Anne orcid.org/0000-0002-3055-2872 et al. (1 more author) (2022) Using bed-roughness signatures to characterise glacial landform assemblages beneath contemporary and palaeo ice-sheets. Journal of Glaciology. pp. 518-532. ISSN 0022-1430
Abstract
Palaeo-glacial landforms can give insights into bed roughness that currently cannot be captured underneath contemporary-ice streams. A few studies have measured bed roughness of palaeo-ice streams but the bed roughness of specific landform assemblages has not been assessed. If glacial landform assemblages have a characteristic bed-roughness signature, this could potentially be used to constrain where certain landform assemblages exist underneath contemporary-ice sheets. To test this, bed roughness was calculated along 5 m × 5 m resolution transects (NEXTMap DTM, 5 m resolution), which were placed over glacial landform assemblages (e.g. drumlins) in the UK. We find that a combination of total roughness and anisotropy of roughness can be used to define characteristic roughness signatures of glacial landform assemblages. The results show that different window sizes are required to determine the characteristic roughness for a wide range of landform types and to produce bed-roughness signatures of these. Mega scale glacial lineations on average have the lowest bed-roughness values and are the most anisotropic landform assemblage.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s), 2021. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Environment and Geography (York) |
Depositing User: | Pure (York) |
Date Deposited: | 07 Dec 2021 16:40 |
Last Modified: | 08 Feb 2025 00:41 |
Published Version: | https://doi.org/10.1017/jog.2021.122 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1017/jog.2021.122 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:181339 |
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Description: using-bed-roughness-signatures-to-characterise-glacial-landform-assemblages-beneath-palaeo-ice-sheets
Licence: CC-BY 2.5