Feb 20, 2024 · January 2023: “Antarctica’s Brunt Ice Shelf Finally Breaks“. The long-awaited break of the Chasm 1 rift in the Brunt Ice Shelf in Antarctica occurred on January 22, 2023, spawning Iceberg A-81, approximately 1550 square kilometers in size, as observed by NASA’s Terra satellite on January 24, 2023, marking a culmination of the rift’s growth since the 1970s.