"Satellite Radar Reveals Weight and Movement of Massive A23a Iceberg"
Radar data from the European Space Agency's CryoSat-2 mission has helped scientists estimate that the world's largest iceberg, A23a, weighs nearly 1 trillion tons. A23a, which broke off from Antarctica in 1986, recently became dislodged and started drifting again. Its movement is uncertain, but it is expected to pass through an area known as "iceberg alley," affecting the ocean and ocean floor it travels over. Icebergs like A23a play a crucial role in fertilizing the ocean by churning seawater and bringing nutrients to the surface.