A landmark 30-year study led by glaciologists at the University of California, Irvine, has produced the most comprehensive circumpolar map to date of Antarctica’s ice grounding-line migration. By analysing three decades of satellite data, researchers found that while much of the continent remains strikingly stable, key regions are experiencing significant ice loss.
The findings, published in Proceedings of the National Academy of Sciences, show that 77% of Antarctica’s coastline has seen no grounding line movement since 1996. Yet in vulnerable sectors—particularly West Antarctica, the Antarctic Peninsula, and parts of East Antarctica—retreat has been concentrated and persistent.
Over the past 30 years, these areas have lost 12,820 square kilometres (nearly 5,000 square miles) of grounded ice—roughly equivalent to 10 cities the size of Greater Los Angeles. The study underscores a critical contrast: widespread stability across the continent, but accelerating change in regions most susceptible to warming oceans and climate stress.
The message is clear—Antarctica is not collapsing uniformly, but where it is retreating, the losses are substantial and consequential for global sea levels. Read More
News Credit: Phys.org
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