Late Holocene stabilization of Conway Ice Ridge

Hoffman, Andrew O.; Summers, Paul T.; Suckale, Jenny; Christianson, Knut; Catania, Ginny; Conway, Howard

doi:10.5194/tc-20-3977-2026

Articles | Volume 20, issue 7

https://doi.org/10.5194/tc-20-3977-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-20-3977-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 7

Research article

|

20 Jul 2026

Research article |

| 20 Jul 2026

Late Holocene stabilization of Conway Ice Ridge

Andrew O. Hoffman, Paul T. Summers, Jenny Suckale, Knut Christianson, Ginny Catania, and Howard Conway

Data sets

Impulse HF radar data from Conway Ridge A. Hoffman et al. https://doi.org/10.15784/601810

somonesummers/IceStreamA: Code for Manuscript and associate model data P. Summers https://doi.org/10.5281/zenodo.19354457

Short summary

In Antarctica, fast-flowing ice streams drive most ice loss. Radar data from Conway Ice Ridge reveal that the van der Veen and Mercer Ice Streams were wider ~3000 years ago and narrowed progressively. Numerical modeling demonstrates that small thickness changes can rapidly alter shear-margin locations. These findings offer crucial insights into Late Holocene Ice Sheet readvance.