Brief communication: Updated grounding line mapping in the Amundsen Sea Embayment, Antarctica, from one day repeat Sentinel-1 SAR data
Abstract. Knowledge of Antarctic glacier grounding lines, which mark the transition between grounded and floating ice, is a vital parameter in determining the stability of major ice shelves and hence the ice sheet. Rapid grounding line retreat and associated mass loss has been documented at numerous Antarctic glaciers, particularly in the Amundsen Sea Embayment. However, few comprehensive grounding line mappings exist, particularly from recent years. Here, we utilize a unique record of Sentinel-1 Synthetic Aperture Radar 1 d repeat-pass imagery to generate a comprehensive retrieval of grounding line location in the Amundsen Sea Embayment in 2025 and evaluate recent changes.
Authors
- Romain Millan (ORCID: https://orcid.org/0000-0002-7987-1305)
- Lucille Gimenes
- B. Scheuchl (ORCID: https://orcid.org/0000-0001-5947-7709)
- Éric Rignot
- Jean Baptiste Barré
- Anders Anker Bjørk (ORCID: https://orcid.org/0000-0002-4919-792X)
- Jonas Kvist Andersen (ORCID: https://orcid.org/0000-0002-6372-9435)
Institutions
- Institut polytechnique de Grenoble (FR)
- University of Copenhagen (DK)
- Centre National de la Recherche Scientifique (FR)
- Jet Propulsion Laboratory (US)
- University of California, Irvine (US)
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR)
- Institut des Géosciences de l'Environnement (FR)
- Institut de Recherche pour le Développement (FR)
- Université Grenoble Alpes (FR)
Publication Details
- Journal
- The cryosphere
- Published
- 2026-03-16
- DOI
- https://doi.org/10.5194/tc-20-1589-2026
- Primary Topic
- Cryospheric studies and observations
- Type
- article
- Field-Weighted Citation Impact
- 0.00