New Observations Reveal Greater Antarctic Grounding Line Exposure to Warm Waters

Scientific Reports, 3 January 2025

A new Antarctic-wide measuring project (using gravity inversion for bathymetry) that includes all Antarctic ice shelves has shown a deeper continental shelf in many regions, along with previously unknown underwater canyons. These would result in an overall greater exposure of the Antarctic ice sheet’s grounding line (where the ice rests on bedrock) to warmer waters. The greater depths of canyons on the continental shelf, as well as ice shelf cavities, imply that many glaciers are more vulnerable to ocean subsurface warming than previously thought, which may increase melting and projections of sea-level rise from Antarctica.

全文 https://doi.org/10.1038/s41598-024-81599-1

帕姆·皮尔森

最新帖子

Lakes at the Edge of the Greenland Ice Sheet Increase Ice Loss, Sea-level Rise

Nature Communications, 1 April 2026 A growing network of meltwater lakes along the edge of…

6 天 ago

Arctic River Rusting Driven by Iron Release from Permafrost Thaw

Nature Communications, 6 April 2026 Arctic warming increases the amount of iron draining out of…

6 天 ago

Northern Arctic Vegetation Takes Decades to Recover Following Abrupt Permafrost Thaw

Nature Climate Change, 30 March 2026 Rising temperatures increase the frequency of retrogressive thaw slumps…

6 天 ago

Only Low Emissions Scenarios Slow Growth in Antarctic Surface Melt

Nature Communications, 30 March 2026 Surface melting in Antarctica is projected to increase this century,…

6 天 ago

COP30 Video of the Week: Monitoring Global Permafrost Thaw and Climate Feedbacks

Permafrost is a critical component of the global climate system because its thaw releases vast…

6 天 ago

Shutdown of AMOC Could Release Ocean Carbon, Increasing Global Warming

Communications Earth & Environment, 27 March 2026 The potential collapse of the major system of…

1 周 ago