Articles | Volume 19, issue 1
https://doi.org/10.5194/tc-19-303-2025
https://doi.org/10.5194/tc-19-303-2025
Research article
 | 
24 Jan 2025
Research article |  | 24 Jan 2025

Assessing the suitability of sites near Pine Island Glacier for subglacial bedrock drilling aimed at detecting Holocene retreat–readvance

Joanne S. Johnson, John Woodward, Ian Nesbitt, Kate Winter, Seth Campbell, Keir A. Nichols, Ryan A. Venturelli, Scott Braddock, Brent M. Goehring, Brenda Hall, Dylan H. Rood, and Greg Balco

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Manuscript not accepted for further review
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Cited articles

Arndt, J. E., Larter, R. D., Friedl, P., Gohl, K., Höppner, K., and the Science Team of Expedition PS104: Bathymetric controls on calving processes at Pine Island Glacier, The Cryosphere, 12, 2039–2050, https://doi.org/10.5194/tc-12-2039-2018, 2018. 
Balco, G., Brown, N., Nichols, K., Venturelli, R. A., Adams, J., Braddock, S., Campbell, S., Goehring, B., Johnson, J. S., Rood, D. H., Wilcken, K., Hall, B., and Woodward, J.: Reversible ice sheet thinning in the Amundsen Sea Embayment during the Late Holocene, The Cryosphere, 17, 1787–1801, https://doi.org/10.5194/tc-17-1787-2023, 2023. 
Balter-Kennedy, A., Schaefer, J. M., Briner, J. P., Young, N. E., Walcott, C., Kuhl, T., Moravec, E., Keisling, B. A., Anandakrishnan, S., Stevens, N., and Brown, N.: First Results from GreenDrill: Exposure dating in sub-ice material from Prudhoe Dome, northwestern Greenland, Abstract, AGU Fall Meeting, San Francisco, USA, 2023, https://agu.confex.com/agu/fm23/meetingapp.cgi/Paper/1314764 (last access: 13 January 2025), 2023a. 
Balter-Kennedy, A., Schaefer, J. M., Schwartz, R., Lamp, J. L., Penrose, L., Middleton, J., Hanley, J., Tibari, B., Blard, P.-H., Winckler, G., Hidy, A. J., and Balco, G.: Cosmogenic 10Be in pyroxene: laboratory progress, production rate systematics, and application of the 10Be–3He nuclide pair in the Antarctic Dry Valleys, Geochronology, 5, 301–321, https://doi.org/10.5194/gchron-5-301-2023, 2023b. 
Bergelin, M., Balco, G., Corbett, L. B., and Bierman, P. R.: Production rate calibration for cosmogenic 10Be in pyroxene by applying a rapid fusion method to 10Be-saturated samples from the Transantarctic Mountains, Antarctica, Geochronology, 6, 491–502, https://doi.org/10.5194/gchron-6-491-2024, 2024. 
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Short summary
Determining where and when the Antarctic ice sheet was smaller than present requires recovery and exposure dating of subglacial bedrock. Here we use ice sheet model outputs and field data (geological and glaciological observations, bedrock samples, and ground-penetrating radar) to assess the suitability for subglacial drilling of sites in the Hudson Mountains, West Antarctica. We find that no sites are perfect, but two are feasible, with the most suitable being Winkie Nunatak (74.86°S, 99.77°W).
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