Tidal Migration of Antarctic Grounding Line

A new paper led by Bryony Freer, a PhD student at the University of Leeds, uses laser altimetry from NASA’s ICESat-2 to show that the grounding line of Antarctic ice shelves can move up to 10 miles in a few hours due to tides. Her work provides insights into how tides affect the long-term changes in the Antarctic Ice Sheet, which is becoming a major source of extra water that is raising global sea levels. ESR scientist Laurie Padman is a co-author on this paper.

Read the full paper at: https://tc.copernicus.org/articles/17/4079/2023/

Freer, B. I. D., Marsh, O. J., Hogg, A. E., Fricker, H. A., and Padman, L. (2023). Modes of Antarctic tidal grounding line migration revealed by Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) laser altimetry, The Cryosphere, 17, 4079–4101, https://doi.org/10.5194/tc-17-4079-2023