Woods Hole Oceanographic Institution study analyzes ice-sheet stability

Researchers at the Woods Hole Oceanographic Institution (WHOI) have conducted a comprehensive observational analysis of ice cliffs surrounding Earth's ice sheets to better understand their impact on sea level rise. Using more than 15,000 satellite laser altimetry observations, the study evaluated the Marine Ice-Cliff Instability (MICI) theory, which suggests that ice cliffs taller than 100 meters above the waterline can become structurally unstable, potentially triggering rapid, self-sustaining ice loss.

The findings indicate that current ice-sheet models may underestimate the speed at which tall ice cliffs break apart. However, the data also shows that glaciers often thin and retreat into areas where conditions are less conducive to continuous rapid retreat, which may limit runaway ice loss. This research aims to improve the accuracy of future sea level rise projections, which is critical for protecting coastal communities and infrastructure worldwide.