Scientists warn that the Antarctic Thwaites Glacier—commonly known as the Doomsday Glacier—will lose mass at a rate equivalent to the current annual loss of the entire Antarctic ice sheet by 2067. This accelerating melt could trigger unprecedented ocean level rises and coastal transformations, threatening nations including China, India, Vietnam, Thailand, Japan, Nigeria, and the United States.
Located on the West Antarctic Ice Sheet, Thwaites Glacier spans 192,000 square kilometers—comparable to Russia’s Sverdlovsk region—and features ice up to 4,000 meters thick. Its collapse alone could elevate global sea levels by 65 centimeters, inundating coastal zones and rendering islands uninhabitable while exacerbating groundwater salinization.
The glacier acts as a critical barrier protecting the more vulnerable West Antarctic Ice Sheet. Scientists have long observed that Thwaites, along with its neighbor Pine Island Glacier, is destabilizing faster than any other Antarctic ice formation. Recent satellite data reveals the glacier’s “tongue”—the section extending into Pine Island Bay—grows over 2 kilometers annually under warm ocean currents, triggering mass collapses and iceberg calving.
A striking example occurred in 2002 when an iceberg named B-22A broke off Thwaites. Unlike typical icebergs that drift freely, B-22A grounded for two decades, slowing the glacier’s slide by over 100 kilometers. By 2023, it had surged 175 kilometers into open waters within six months.
Current research indicates Thwaites’ instability stems from dual threats: thinning ice sheets under warm currents and erosion of its base. Computer models predict conflicting outcomes—some forecasts suggest collapse by the mid-2020s, while newer analyses indicate stability could persist for centuries. Recent studies also point to geological activity in Earth’s crust as a potential driver of Thwaites’ disintegration, rather than solely human climate impacts.
In response, researchers are developing the Seabed Anchored Curtain Project—a proposed underwater barrier designed to deflect warm ocean currents. However, scientists emphasize that the glacier’s slow reaction to environmental shifts means such interventions would yield minimal short-term relief as global emissions reductions remain critical.
