Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica
| Autor: | Scott Braddock, Ryan A. Venturelli, Keir Nichols, Elliot Moravec, Grant V. Boeckmann, Seth Campbell, Greg Balco, Robert Ackert, David Small, Joanne S. Johnson, Nelia Dunbar, John Woodward, Sujoy Mukhopadhyay, Brent Goehring |
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| Jazyk: | angličtina |
| Předmět: | |
| Zdroj: | Annals of Glaciology, Pp 1-11 |
| Druh dokumentu: | article |
| ISSN: | 0260-3055 1727-5644 |
| DOI: | 10.1017/aog.2024.12 |
| Popis: | 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 ( |
| Databáze: | Directory of Open Access Journals |
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