Why Pine Island Glacier Fractures Are Accelerating
🕐 7 min read | 🌍 Natural Wonders 🔒 Key Takeaways Pine Island Glacier loses 45 billion tons of ice annually and accounts for 1/4 of all West Antarctic ice loss despite covering less than 1% of the continent. A 6,250-square-kilometer iceberg (larger than Delaware) calved in 2017 from a single fracture event, captured in real-time by satellite imagery. Warm Circumpolar Deep Water melts the ice shelf from below at rates exceeding 10 meters per year, thinning it and removing back-pressure on inland ice. Fracture propagation has accelerated from 1 km/year in the 2000s to over 2 km/year today, approaching an irreversible instability threshold within 15 years. Deep in West Antarctica, a colossal glacier is tearing itself apart, and the cracks are spreading faster than ever before. Pine Island Glacier fractures now propagate at 1–2 kilometers per year, birthing icebergs the size of Delaware and unleashing 45 billion tons of ice annually into the ocean. What makes this ...