Articles | Volume 15, issue 7
https://doi.org/10.5194/tc-15-3329-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-3329-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Jul 2021
Research article |
| 20 Jul 2021
| 20 Jul 2021
Holocene thinning of Darwin and Hatherton glaciers, Antarctica, and implications for grounding-line retreat in the Ross Sea
Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA
now at: Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
John O. Stone
Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA
Michelle Koutnik
Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA
Courtney King
School of Earth and Climate Science and Climate Change Institute, University of Maine, Orono, ME 04469, USA
Howard Conway
Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA
Brenda Hall
School of Earth and Climate Science and Climate Change Institute, University of Maine, Orono, ME 04469, USA
Keir Nichols
Department of Earth and Environmental Sciences, Tulane University, New Orleans, LA 70118, USA
Brent Goehring
Department of Earth and Environmental Sciences, Tulane University, New Orleans, LA 70118, USA
Mette K. Gillespie
Faculty of Engineering and Science, Western Norway University of Applied Sciences, Sogndal, 6856, Norway
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Short summary
We present chronologies from Darwin and Hatherton glaciers to better constrain ice sheet retreat during the last deglaciation in the Ross Sector of Antarctica. We use a glacier flowband model and an ensemble of 3D ice sheet model simulations to show that (i) the whole glacier system likely thinned steadily from about 9–3 ka, and (ii) the grounding line likely reached the Darwin–Hatherton Glacier System at about 3 ka, which is ≥3.8 kyr later than was suggested by previous reconstructions.
We present chronologies from Darwin and Hatherton glaciers to better constrain ice sheet retreat...
