Researchers have identified a significant increase in the size and depth of crevasses in the Greenland Ice Sheet, attributed to climate change.
A large-scale study conducted by scientists from Durham University utilized over 8,000 3D satellite surface maps to analyze changes between 2016 and 2021. The findings indicate that these wedge-shaped fractures are growing more rapidly than previously observed, particularly at the fast-flowing edges of the ice sheet.
The study revealed that crevasses have expanded significantly, suggesting that the mechanisms driving ice loss are accelerating due to climate change. This includes increased ice flow and melting caused by warmer air and ocean temperatures.
Greenland is a critical contributor to global sea level rise, having accounted for approximately 14 mm since 1992. If the entire ice sheet were to melt, it could potentially raise sea levels by up to seven meters. Current estimates suggest that Greenland could contribute an additional 30 cm to sea levels by 2100 if melting continues at the current rate.
The researchers hope their findings will enhance models predicting future behavior of the Greenland Ice Sheet, particularly in terms of how crevassing affects overall ice stability and loss.
This research underscores the urgent need for continued monitoring and understanding of the Greenland Ice Sheet’s dynamics in the context of ongoing climate change.