Looking through drumlins: testing the application of ground-penetrating radar
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, whe...
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International Glaciological Society
2014
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Online Access: | http://nora.nerc.ac.uk/id/eprint/508841/ https://nora.nerc.ac.uk/id/eprint/508841/1/j14j110.pdf https://doi.org/10.3189/2014JoG14J110 |
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ftnerc:oai:nora.nerc.ac.uk:508841 2023-05-15T16:57:39+02:00 Looking through drumlins: testing the application of ground-penetrating radar Spagnolo, Matteo King, Edward C. Ashmore, David W. Rea, Brice R. Ely, Jeremy C. Clark, Chris D. 2014-11-01 text http://nora.nerc.ac.uk/id/eprint/508841/ https://nora.nerc.ac.uk/id/eprint/508841/1/j14j110.pdf https://doi.org/10.3189/2014JoG14J110 en eng International Glaciological Society https://nora.nerc.ac.uk/id/eprint/508841/1/j14j110.pdf Spagnolo, Matteo; King, Edward C. orcid:0000-0003-3793-3915 Ashmore, David W.; Rea, Brice R.; Ely, Jeremy C.; Clark, Chris D. 2014 Looking through drumlins: testing the application of ground-penetrating radar. Journal of Glaciology, 60 (224). 1126-1134. https://doi.org/10.3189/2014JoG14J110 <https://doi.org/10.3189/2014JoG14J110> cc_by CC-BY Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.3189/2014JoG14J110 2023-02-04T19:40:31Z 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 �12m was achieved when using a 50MHz antenna, with a separation of 1 m, trace spacing of 1m 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 �4m 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. Article in Journal/Newspaper Journal of Glaciology Natural Environment Research Council: NERC Open Research Archive Journal of Glaciology 60 224 1126 1134 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
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 �12m was achieved when using a 50MHz antenna, with a separation of 1 m, trace spacing of 1m 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 �4m 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. |
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 radar |
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 radar |
title_short |
Looking through drumlins: testing the application of ground-penetrating radar |
title_full |
Looking through drumlins: testing the application of ground-penetrating radar |
title_fullStr |
Looking through drumlins: testing the application of ground-penetrating radar |
title_full_unstemmed |
Looking through drumlins: testing the application of ground-penetrating radar |
title_sort |
looking through drumlins: testing the application of ground-penetrating radar |
publisher |
International Glaciological Society |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/508841/ https://nora.nerc.ac.uk/id/eprint/508841/1/j14j110.pdf https://doi.org/10.3189/2014JoG14J110 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
https://nora.nerc.ac.uk/id/eprint/508841/1/j14j110.pdf Spagnolo, Matteo; King, Edward C. orcid:0000-0003-3793-3915 Ashmore, David W.; Rea, Brice R.; Ely, Jeremy C.; Clark, Chris D. 2014 Looking through drumlins: testing the application of ground-penetrating radar. Journal of Glaciology, 60 (224). 1126-1134. https://doi.org/10.3189/2014JoG14J110 <https://doi.org/10.3189/2014JoG14J110> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3189/2014JoG14J110 |
container_title |
Journal of Glaciology |
container_volume |
60 |
container_issue |
224 |
container_start_page |
1126 |
op_container_end_page |
1134 |
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1766049210684145664 |