Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica
Abstract 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...
Published in: | Annals of Glaciology |
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Language: | English |
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Cambridge University Press (CUP)
2024
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Online Access: | http://dx.doi.org/10.1017/aog.2024.12 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305524000120 |
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crcambridgeupr:10.1017/aog.2024.12 2024-06-09T07:38:26+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 Goehring, Brent Natural Environment Research Council Natural Environment Research Council Natural Environment Research Council Natural Environment Research Council National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation 2024 http://dx.doi.org/10.1017/aog.2024.12 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305524000120 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology page 1-11 ISSN 0260-3055 1727-5644 journal-article 2024 crcambridgeupr https://doi.org/10.1017/aog.2024.12 2024-05-15T13:09:31Z Abstract 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 Cambridge University Press Antarctic The Antarctic West Antarctica Annals of Glaciology 1 35 |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract 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. |
author2 |
Natural Environment Research Council Natural Environment Research Council Natural Environment Research Council Natural Environment Research Council National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation National Science Foundation |
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 Goehring, Brent |
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 Goehring, Brent 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 Goehring, Brent |
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 (CUP) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1017/aog.2024.12 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305524000120 |
geographic |
Antarctic The Antarctic West Antarctica |
geographic_facet |
Antarctic The Antarctic West Antarctica |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_source |
Annals of Glaciology page 1-11 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
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_ |
1801372923198439424 |