A new percussion hammer mechanism for a borehole deployable subglacial sediment corer
Abstract 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 ma...
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crcambridgeupr:10.1017/aog.2020.83 2024-06-09T07:38:32+00:00 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 A. Davis, Peter E. D. Smith, Andrew M. 2020 http://dx.doi.org/10.1017/aog.2020.83 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S026030552000083X en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology volume 62, issue 85-86, page 385-389 ISSN 0260-3055 1727-5644 journal-article 2020 crcambridgeupr https://doi.org/10.1017/aog.2020.83 2024-05-15T13:12:54Z Abstract 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 Cambridge University Press Antarctic Annals of Glaciology 1 5 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract 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 A. Davis, Peter E. D. Smith, Andrew M. |
spellingShingle |
Makinson, Keith Ashurst, Daniel Anker, Paul G. D. Smith, James A. Hodgson, Dominic A. 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 A. 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 (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/aog.2020.83 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S026030552000083X |
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_source |
Annals of Glaciology volume 62, issue 85-86, page 385-389 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
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_ |
1801373543969062912 |