A new percussion hammer mechanism for a borehole deployable subglacial sediment corer
Subglacial sediments have the potential to reveal information about the controls on glacier flow, changes in ice-sheet history and characterise life in those environments. Retrieving sediments from beneath the ice, through hot water drilled access holes at remote field locations, present many challe...
Published in: | Annals of Glaciology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press
2021
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Online Access: | http://nora.nerc.ac.uk/id/eprint/528236/ https://nora.nerc.ac.uk/id/eprint/528236/1/a-new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer.pdf https://www.cambridge.org/core/journals/annals-of-glaciology/article/new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer/9B69C87FF52AE0F86A6F660E86F6A2AC |
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ftnerc:oai:nora.nerc.ac.uk:528236 2023-05-15T13:29:48+02:00 A new percussion hammer mechanism for a borehole deployable subglacial sediment corer Makinson, Keith Ashurst, Daniel Anker, Paul G.D. Smith, James A. Hodgson, Dominic Davis, Peter E.D. Smith, Andrew M. 2021-09 text http://nora.nerc.ac.uk/id/eprint/528236/ https://nora.nerc.ac.uk/id/eprint/528236/1/a-new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer.pdf https://www.cambridge.org/core/journals/annals-of-glaciology/article/new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer/9B69C87FF52AE0F86A6F660E86F6A2AC en eng Cambridge University Press https://nora.nerc.ac.uk/id/eprint/528236/1/a-new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer.pdf Makinson, Keith orcid:0000-0002-5791-1767 Ashurst, Daniel; Anker, Paul G.D. orcid:0000-0002-4359-4342 Smith, James A. orcid:0000-0002-1333-2544 Hodgson, Dominic orcid:0000-0002-3841-3746 Davis, Peter E.D. orcid:0000-0002-6471-6310 Smith, Andrew M. orcid:0000-0001-8577-482X . 2021 A new percussion hammer mechanism for a borehole deployable subglacial sediment corer [in special issue: Drilling through the Ice] Annals of Glaciology, 62 (85-86). 385 -389. https://doi.org/10.1017/aog.2020.83 <https://doi.org/10.1017/aog.2020.83> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1017/aog.2020.83 2023-02-04T19:50:55Z Subglacial sediments have the potential to reveal information about the controls on glacier flow, changes in ice-sheet history and characterise life in those environments. Retrieving sediments from beneath the ice, through hot water drilled access holes at remote field locations, present many challenges. Motivated by the need to minimise weight, corer diameter and simplify assembly and operation, British Antarctic Survey, in collaboration with UWITEC, developed a simple mechanical percussion corer. At depths over 1000 m however, manual operation of the percussion hammer is compromised by the lack of clear operator feedback at the surface. To address this, we present a new auto-release-recovery percussion hammer mechanism that makes coring operations depth independent and improves hammer efficiency. Using a single rope tether for both the corer and hammer operation, this modified percussion corer is relatively simple to operate, easy to maintain, and has successfully operated at a depth of >2130 m. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic British Antarctic Survey Ice Sheet Natural Environment Research Council: NERC Open Research Archive Antarctic Annals of Glaciology 1 5 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Subglacial sediments have the potential to reveal information about the controls on glacier flow, changes in ice-sheet history and characterise life in those environments. Retrieving sediments from beneath the ice, through hot water drilled access holes at remote field locations, present many challenges. Motivated by the need to minimise weight, corer diameter and simplify assembly and operation, British Antarctic Survey, in collaboration with UWITEC, developed a simple mechanical percussion corer. At depths over 1000 m however, manual operation of the percussion hammer is compromised by the lack of clear operator feedback at the surface. To address this, we present a new auto-release-recovery percussion hammer mechanism that makes coring operations depth independent and improves hammer efficiency. Using a single rope tether for both the corer and hammer operation, this modified percussion corer is relatively simple to operate, easy to maintain, and has successfully operated at a depth of >2130 m. |
format |
Article in Journal/Newspaper |
author |
Makinson, Keith Ashurst, Daniel Anker, Paul G.D. Smith, James A. Hodgson, Dominic Davis, Peter E.D. Smith, Andrew M. |
spellingShingle |
Makinson, Keith Ashurst, Daniel Anker, Paul G.D. Smith, James A. Hodgson, Dominic Davis, Peter E.D. Smith, Andrew M. A new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
author_facet |
Makinson, Keith Ashurst, Daniel Anker, Paul G.D. Smith, James A. Hodgson, Dominic Davis, Peter E.D. Smith, Andrew M. |
author_sort |
Makinson, Keith |
title |
A new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
title_short |
A new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
title_full |
A new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
title_fullStr |
A new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
title_full_unstemmed |
A new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
title_sort |
new percussion hammer mechanism for a borehole deployable subglacial sediment corer |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/528236/ https://nora.nerc.ac.uk/id/eprint/528236/1/a-new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer.pdf https://www.cambridge.org/core/journals/annals-of-glaciology/article/new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer/9B69C87FF52AE0F86A6F660E86F6A2AC |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Annals of Glaciology Antarc* Antarctic British Antarctic Survey Ice Sheet |
genre_facet |
Annals of Glaciology Antarc* Antarctic British Antarctic Survey Ice Sheet |
op_relation |
https://nora.nerc.ac.uk/id/eprint/528236/1/a-new-percussion-hammer-mechanism-for-a-borehole-deployable-subglacial-sediment-corer.pdf Makinson, Keith orcid:0000-0002-5791-1767 Ashurst, Daniel; Anker, Paul G.D. orcid:0000-0002-4359-4342 Smith, James A. orcid:0000-0002-1333-2544 Hodgson, Dominic orcid:0000-0002-3841-3746 Davis, Peter E.D. orcid:0000-0002-6471-6310 Smith, Andrew M. orcid:0000-0001-8577-482X . 2021 A new percussion hammer mechanism for a borehole deployable subglacial sediment corer [in special issue: Drilling through the Ice] Annals of Glaciology, 62 (85-86). 385 -389. https://doi.org/10.1017/aog.2020.83 <https://doi.org/10.1017/aog.2020.83> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/aog.2020.83 |
container_title |
Annals of Glaciology |
container_start_page |
1 |
op_container_end_page |
5 |
_version_ |
1766003295137038336 |