ArticleScience advances2023
Direct observations of melting, freezing, and ocean circulation in an ice shelf basal crevasse.
Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Fracture-driven weakening amplifies projected ice loss from West Antarctica.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Ocean stratification and tides control basal melting at the Ross Ice Shelf Grounding Zone.Science advances · 2026Article
- A West Antarctic grounding-zone environment shaped by episodic water flow.Nature geoscience · 2025Article
- Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf.Science advances · 2024Article
- Plume-scale confinement on thermal convection.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
Corrections and comments
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Authors and funding
15 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ocean conditions near the grounding zones of Antarctica's ice shelves play a key role in controlling the outflow and mass balance of the ice sheet. However, ocean observations in these regions are largely absent. Here, we present a detailed spatial survey collected with an underwater vehicle in a basal crevasse located in the ocean cavity at the Ross Ice Shelf grounding zone. The observations depict fine-scale variability in ocean forcing that drives asymmetric melting along the lower crevasse sidewalls and freezing in the upper reaches of the crevasse. Freshwater release from melting at depth and salt rejection from freezing above drives an overturning circulation. This vertical circulation pattern overlays a dominant throughflow jet, which funnels water parallel to the coastline, orthogonal to the direction of tidal currents. Importantly, these data reveal that basal crevasses influence ocean circulation and mixing at ice shelf grounding zones to an extent previously unknown.
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Registered trials
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