The world’s largest iceberg, A23a, has broken free after three decades of being grounded in Antarctica’s Weddell Sea. This massive ice structure, weighing one trillion tonnes and measuring twice the size of Greater London (3,800 square kilometers), has begun its journey into the Southern Ocean. Unprecedented Movement After 30 Years A23a originally calved from Antarctica’s Filchner Ice Shelf in 1986. The colossal structure remained static in the Weddell Sea until 2020, when it began a slow northward drift. Recent observations confirm the iceberg has now escaped a Taylor Column – a unique oceanographic phenomenon where rotating water above a seamount … Continue reading World’s Largest Iceberg A23a, 3,800 Sq Km, Breaks Free After 30 Years; Scientists Monitor Its Path