Channels of warm water are merging under Thwaites glacier, new research shows.
Data gathered during the first two years of the project has heightened concerns the glacier could collapse. If this happens it could raise global sea levels by two feet. That is enough to cause"significant problems" for coastal cities, according to NASA.
Pettit and her team's research on Thwaites is part of a larger mission coordinated by the International Thwaites Glacier Collaboration. Data collected over the course of the program will eventually be fed into modeling systems., the expedition completed last year was the first to reach the tip of the Thwaites ice shelf, the section of the glacier straddles the ocean, and is typically sealed in by sea ice.
Information collected over the last two years suggests warm water is hitting Thwaites from Pine Island Glacier to its north. This warm water is merging with two more streams of warm water coming from different directions underneath the ice shelf,The warm water streams threaten to destabilize Thwaites' traditionally more stable eastern side—which flows at approximately 2,000 feet per year, compared to 1.2 miles per year on the western side.
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