Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica
We review successes and challenges from five recent subglacial bedrock drilling campaigns intended to find evidence for Antarctic Ice Sheet retreat during warm periods in the geologic past. Insights into times when the polar ice sheets were smaller than present serve as guiding information for model...
Published in: | Annals of Glaciology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press
2024
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Online Access: | http://nora.nerc.ac.uk/id/eprint/536633/ https://nora.nerc.ac.uk/id/eprint/536633/1/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica.pdf https://www.cambridge.org/core/journals/annals-of-glaciology/article/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica/76755344683D32F31F14326EBB79E8B5 |
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ftnerc:oai:nora.nerc.ac.uk:536633 2024-05-19T07:28:40+00:00 Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica Braddock, Scott Venturelli, Ryan A. Nichols, Keir Moravec, Elliot Boeckmann, Grant V. Campbell, Seth Balco, Greg Ackert, Robert Small, David Johnson, Joanne S. Dunbar, Nelia Woodward, John Mukhopadhyay, Sujoy 2024-03-27 text http://nora.nerc.ac.uk/id/eprint/536633/ https://nora.nerc.ac.uk/id/eprint/536633/1/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica.pdf https://www.cambridge.org/core/journals/annals-of-glaciology/article/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica/76755344683D32F31F14326EBB79E8B5 en eng Cambridge University Press https://nora.nerc.ac.uk/id/eprint/536633/1/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica.pdf Braddock, Scott; Venturelli, Ryan A.; Nichols, Keir; Moravec, Elliot; Boeckmann, Grant V.; Campbell, Seth; Balco, Greg; Ackert, Robert; Small, David; Johnson, Joanne S. orcid:0000-0003-4537-4447 Dunbar, Nelia; Woodward, John; Mukhopadhyay, Sujoy. 2024 Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica. Annals of Glaciology. 11, pp. https://doi.org/10.1017/aog.2024.12 <https://doi.org/10.1017/aog.2024.12> cc_by_4 Publication - Article PeerReviewed 2024 ftnerc https://doi.org/10.1017/aog.2024.12 2024-04-30T23:32:31Z We review successes and challenges from five recent subglacial bedrock drilling campaigns intended to find evidence for Antarctic Ice Sheet retreat during warm periods in the geologic past. Insights into times when the polar ice sheets were smaller than present serve as guiding information for modeling efforts that aim to predict the rate and magnitude of future sea level rise that would accompany major retreat of the Antarctic Ice Sheet. One method to provide direct evidence for the timing of deglaciations and minimum extent of prior ice sheets is to extract subglacial bedrock cores for cosmogenic nuclide analysis from beneath the modern ice sheet surface. Here we summarize the lessons learned from five field seasons tasked with obtaining bedrock cores from shallow depths (<120 m beneath ice surface) across West Antarctica since 2016. We focus our findings on drilling efforts and technology and geophysical surveys with ground-penetrating radar. Shallow subglacial drilling provides a high risk, high reward means to test for past instabilities of the Antarctic Ice Sheet, and we highlight key challenges and solutions to increase the likelihood of success for future subglacial drilling efforts in polar regions. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica Natural Environment Research Council: NERC Open Research Archive Annals of Glaciology 1 35 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
We review successes and challenges from five recent subglacial bedrock drilling campaigns intended to find evidence for Antarctic Ice Sheet retreat during warm periods in the geologic past. Insights into times when the polar ice sheets were smaller than present serve as guiding information for modeling efforts that aim to predict the rate and magnitude of future sea level rise that would accompany major retreat of the Antarctic Ice Sheet. One method to provide direct evidence for the timing of deglaciations and minimum extent of prior ice sheets is to extract subglacial bedrock cores for cosmogenic nuclide analysis from beneath the modern ice sheet surface. Here we summarize the lessons learned from five field seasons tasked with obtaining bedrock cores from shallow depths (<120 m beneath ice surface) across West Antarctica since 2016. We focus our findings on drilling efforts and technology and geophysical surveys with ground-penetrating radar. Shallow subglacial drilling provides a high risk, high reward means to test for past instabilities of the Antarctic Ice Sheet, and we highlight key challenges and solutions to increase the likelihood of success for future subglacial drilling efforts in polar regions. |
format |
Article in Journal/Newspaper |
author |
Braddock, Scott Venturelli, Ryan A. Nichols, Keir Moravec, Elliot Boeckmann, Grant V. Campbell, Seth Balco, Greg Ackert, Robert Small, David Johnson, Joanne S. Dunbar, Nelia Woodward, John Mukhopadhyay, Sujoy |
spellingShingle |
Braddock, Scott Venturelli, Ryan A. Nichols, Keir Moravec, Elliot Boeckmann, Grant V. Campbell, Seth Balco, Greg Ackert, Robert Small, David Johnson, Joanne S. Dunbar, Nelia Woodward, John Mukhopadhyay, Sujoy Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica |
author_facet |
Braddock, Scott Venturelli, Ryan A. Nichols, Keir Moravec, Elliot Boeckmann, Grant V. Campbell, Seth Balco, Greg Ackert, Robert Small, David Johnson, Joanne S. Dunbar, Nelia Woodward, John Mukhopadhyay, Sujoy |
author_sort |
Braddock, Scott |
title |
Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica |
title_short |
Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica |
title_full |
Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica |
title_fullStr |
Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica |
title_full_unstemmed |
Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica |
title_sort |
lessons learned from shallow subglacial bedrock drilling campaigns in antarctica |
publisher |
Cambridge University Press |
publishDate |
2024 |
url |
http://nora.nerc.ac.uk/id/eprint/536633/ https://nora.nerc.ac.uk/id/eprint/536633/1/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica.pdf https://www.cambridge.org/core/journals/annals-of-glaciology/article/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica/76755344683D32F31F14326EBB79E8B5 |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/536633/1/lessons-learned-from-shallow-subglacial-bedrock-drilling-campaigns-in-antarctica.pdf Braddock, Scott; Venturelli, Ryan A.; Nichols, Keir; Moravec, Elliot; Boeckmann, Grant V.; Campbell, Seth; Balco, Greg; Ackert, Robert; Small, David; Johnson, Joanne S. orcid:0000-0003-4537-4447 Dunbar, Nelia; Woodward, John; Mukhopadhyay, Sujoy. 2024 Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica. Annals of Glaciology. 11, pp. https://doi.org/10.1017/aog.2024.12 <https://doi.org/10.1017/aog.2024.12> |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1017/aog.2024.12 |
container_title |
Annals of Glaciology |
container_start_page |
1 |
op_container_end_page |
35 |
_version_ |
1799475331769303040 |