Articles | Volume 16, issue 10
Research article
04 Oct 2022
Research article |  | 04 Oct 2022

Drill-site selection for cosmogenic-nuclide exposure dating of the bed of the Greenland Ice Sheet

Jason P. Briner, Caleb K. Walcott, Joerg M. Schaefer, Nicolás E. Young, Joseph A. MacGregor, Kristin Poinar, Benjamin A. Keisling, Sridhar Anandakrishnan, Mary R. Albert, Tanner Kuhl, and Grant Boeckmann

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Cited articles

Albert, M. R., Slawny, K. R., Boeckmann, G. V., Gibson, C. J., Johnson, J. A., Makinson, K., and Rix, J.: Recent innovations in drilling in ice, in: Advances in Terrestrial and Extraterrestrial Drilling: Ground, Ice, and Underwater, edited by: Bar-Cohen, Y. and Zacny, K., CRC Press, ISBN 9780367674861, 2021. 
Aschwanden, A., Fahnestock Mark, A., Truffer, M., Brinkerhoff Douglas, J., Hock, R., Khroulev, C., Mottram, R., and Khan, S. A.: Contribution of the Greenland Ice Sheet to sea level over the next millennium, Science Advances, 5, eaav9396,, 2019. 
Balco, G.: Glacier Change and Paleoclimate Applications of Cosmogenic-Nuclide Exposure Dating, Annu. Rev. Earth Pl. Sc., 48, 21–48,, 2020. 
Balter-Kennedy, A., Young, N. E., Briner, J. P., Graham, B. L., and Schaefer, J. M.: Centennial- and Orbital-Scale Erosion Beneath the Greenland Ice Sheet Near Jakobshavn Isbræ, J. Geophys. Res.-Earth, 126, e2021JF006429,, 2021. 
Bender, M. L., Burgess, E., Alley, R. B., Barnett, B., and Clow, G. D.: On the nature of the dirty ice at the bottom of the GISP2 ice core, Earth Planet. Sc. Lett., 299, 466–473,, 2010. 
Short summary
The 7.4 m of sea level equivalent stored as Greenland ice is getting smaller every year. The uncertain trajectory of ice loss could be better understood with knowledge of the ice sheet's response to past climate change. Within the bedrock below the present-day ice sheet is an archive of past ice-sheet history. We analyze all available data from Greenland to create maps showing where on the ice sheet scientists can drill, using currently available drills, to obtain sub-ice materials.