World Largest One Trillion Iceberg Melt Down After Decades of Stillness
The world’s largest and oldest iceberg, A23a, has broken free after decades of being grounded on the seabed near Antarctica. This colossal "mega-berg," weighing over a trillion tonnes and spanning an area twice the size of Greater London, is now drifting into the Southern Ocean.
A23a was calved from Antarctica’s Filchner Ice Shelf in 1986, marking the beginning of its extraordinary journey. For over 30 years, it remained grounded on the seabed of the Weddell Sea. In 2020, it began to shift northward, but its progress was slowed by a Taylor Column, an oceanographic phenomenon that kept it spinning in one spot for months.
Dr. Andrew Meijers, an oceanographer at the British Antarctic Survey, remarked, “It’s exciting to see A23a on the move again after periods of being stuck. We are curi...
