This iceberg was once the biggest in the world
8 hours ago
- #Climate Change
- #Antarctica
- #Icebergs
- A23a, once the largest iceberg on Earth, is nearing its end after a 40-year journey.
- The iceberg, which broke off from the Filchner Ice Shelf in 1986, has been melting and disintegrating rapidly over the past year.
- Scientists have been studying A23a's disintegration to understand how Antarctica's ice shelves might respond to climate change.
- A23a's journey took it across the South Atlantic Ocean, where it encountered warmer waters, accelerating its melt.
- The iceberg's final months were marked by hydrofracturing, where meltwater widened cracks, leading to its breakup.
- By March, A23a had shrunk to approximately 180 sq km, with scientists expecting it to disappear completely within weeks.
- The study of A23a provides insights into the stability of Antarctic ice shelves and their role in sea-level rise.