[REVISION HISTORY]

Thwaites Glacier melting and seismic research

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2026-10-21 20:33 UTC → 2026-10-27 00:14 UTC · added ~~removed~~

Research regarding the Thwaites Glacier in West Antarctica has focused on understanding sub-ice melting processes and their impact on global sea levels. Data recovered from the Ran, an autonomous underwater vehicle, revealed that strong undersea currents are causing significant erosion to the ice layer beneath the Dotson Ice Shelf. Recent modeling from NASA, the University of California, Irvine, and the Jet Propulsion Laboratory has significantly revised risk assessments by accounting for a ‘grounding zone’—a several-kilometer area where seawater flows under the ice—rather than a fixed line. This suggests the glacier could contribute approximately 30 mm (1.2 inches) to global sea level rise by 2100, roughly doubling previous projections. New research published in Nature Communications reinforces these findings, noting that this wide grounding zone allows warm seawater to flow in and out with the tides, accelerating melting from beneath the ice. To better understand these hidden interactions, the International Thwaites Glacier Collaboration (ITGC) has employed advanced monitoring techniques, such as hot-water drilling, to deploy oceanographic instruments. While Thwaites currently contributes about 4% to global sea-level rise, its total collapse could raise sea levels by over 60 centimeters and potentially trigger a total rise of up to 3 meters by destabilizing the broader Antarctic ice sheet. Simulations by the British Antarctic Survey suggest the glacier may be on an ‘irreversible path of ice loss,’ projected to continue losing mass for at least the next 150 years even if ocean warming is halted. ~~Modeling from~~ Scientists attribute this ongoing loss to climatic changes dating back to the ~~University of California, Irvine, and NASA’s Jet Propulsion Laboratory suggests~~ 1940s, noting that ~~past ocean-induced~~ three independent computer models show melting ~~has already committed the glacier to this future of inevitable ice loss.~~ would persist even if seawater-induced melting were halted. While the neighboring Pine Island Glacier has shown signs of thickening, Thwaites has only experienced a slowdown in its rate of retreat.

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