Looking through drumlins: testing the application of ground-penetrating rada
<jats:title>Abstract</jats:title><jats:p>Ground-penetrating radar (GPR) is becoming a commonly applied technique in geomorphology. However, its use in the study of subglacial bedforms has yet to be fully explored and exploited. This paper presents the results of a GPR feasibility s...
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International Glaciological Society
2014
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ftunivliverpool:oai:livrepository.liverpool.ac.uk:3006704 2023-05-15T16:57:38+02:00 Looking through drumlins: testing the application of ground-penetrating rada Spagnolo, Matteo King, Edward C Ashmore, David W Rea, Brice R Ely, Jeremy C Clark, Chris D 2014 text http://livrepository.liverpool.ac.uk/3006704/ http://livrepository.liverpool.ac.uk/3006704/1/spagnolo2014_jglac.pdf en eng International Glaciological Society http://livrepository.liverpool.ac.uk/3006704/1/spagnolo2014_jglac.pdf Spagnolo, Matteo, King, Edward C, Ashmore, David W orcid:0000-0003-4829-7854 , Rea, Brice R, Ely, Jeremy C and Clark, Chris D (2014) Looking through drumlins: testing the application of ground-penetrating rada. Journal of Glaciology, 60 (224). 1126 - 1134. Article NonPeerReviewed 2014 ftunivliverpool 2022-04-25T09:01:46Z <jats:title>Abstract</jats:title><jats:p>Ground-penetrating radar (GPR) is becoming a commonly applied technique in geomorphology. However, its use in the study of subglacial bedforms has yet to be fully explored and exploited. This paper presents the results of a GPR feasibility study conducted on a drumlinized terrain in Cumbria, UK, where five drumlins were investigated using multiple radar antenna frequencies. The site was selected for the presence of nearby bedrock outcrops, suggesting a shallow drumlinized diamict–bedrock contact and a permeable lithology. Despite the clayey sediment and unfavourable weather conditions, a considerable penetration depth of ~12 m was achieved when using a 50 MHz antenna, with a separation of 1 m, trace spacing of 1 m and 128-fold vertical stack. Results indicate that the drumlinized diamict is in direct erosional contact with the bedrock. While the internal drumlin geometry is generally chaotic on the stoss side, evidence of layering dipping downflow at an angle greater than the drumlin surface profile was found on the lee side. The inter-drumlin areas comprise ~4 m of infill sediment that masks part of the original drumlin profile. Overall, this study indicates that GPR can be deployed successfully in the study of glacial bedform sedimentary architecture.</jats:p> Article in Journal/Newspaper Journal of Glaciology The University of Liverpool Repository |
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Open Polar |
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The University of Liverpool Repository |
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ftunivliverpool |
language |
English |
description |
<jats:title>Abstract</jats:title><jats:p>Ground-penetrating radar (GPR) is becoming a commonly applied technique in geomorphology. However, its use in the study of subglacial bedforms has yet to be fully explored and exploited. This paper presents the results of a GPR feasibility study conducted on a drumlinized terrain in Cumbria, UK, where five drumlins were investigated using multiple radar antenna frequencies. The site was selected for the presence of nearby bedrock outcrops, suggesting a shallow drumlinized diamict–bedrock contact and a permeable lithology. Despite the clayey sediment and unfavourable weather conditions, a considerable penetration depth of ~12 m was achieved when using a 50 MHz antenna, with a separation of 1 m, trace spacing of 1 m and 128-fold vertical stack. Results indicate that the drumlinized diamict is in direct erosional contact with the bedrock. While the internal drumlin geometry is generally chaotic on the stoss side, evidence of layering dipping downflow at an angle greater than the drumlin surface profile was found on the lee side. The inter-drumlin areas comprise ~4 m of infill sediment that masks part of the original drumlin profile. Overall, this study indicates that GPR can be deployed successfully in the study of glacial bedform sedimentary architecture.</jats:p> |
format |
Article in Journal/Newspaper |
author |
Spagnolo, Matteo King, Edward C Ashmore, David W Rea, Brice R Ely, Jeremy C Clark, Chris D |
spellingShingle |
Spagnolo, Matteo King, Edward C Ashmore, David W Rea, Brice R Ely, Jeremy C Clark, Chris D Looking through drumlins: testing the application of ground-penetrating rada |
author_facet |
Spagnolo, Matteo King, Edward C Ashmore, David W Rea, Brice R Ely, Jeremy C Clark, Chris D |
author_sort |
Spagnolo, Matteo |
title |
Looking through drumlins: testing the application of ground-penetrating rada |
title_short |
Looking through drumlins: testing the application of ground-penetrating rada |
title_full |
Looking through drumlins: testing the application of ground-penetrating rada |
title_fullStr |
Looking through drumlins: testing the application of ground-penetrating rada |
title_full_unstemmed |
Looking through drumlins: testing the application of ground-penetrating rada |
title_sort |
looking through drumlins: testing the application of ground-penetrating rada |
publisher |
International Glaciological Society |
publishDate |
2014 |
url |
http://livrepository.liverpool.ac.uk/3006704/ http://livrepository.liverpool.ac.uk/3006704/1/spagnolo2014_jglac.pdf |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
http://livrepository.liverpool.ac.uk/3006704/1/spagnolo2014_jglac.pdf Spagnolo, Matteo, King, Edward C, Ashmore, David W orcid:0000-0003-4829-7854 , Rea, Brice R, Ely, Jeremy C and Clark, Chris D (2014) Looking through drumlins: testing the application of ground-penetrating rada. Journal of Glaciology, 60 (224). 1126 - 1134. |
_version_ |
1766049191850672128 |