The 2,500 sq km (965 sq mile) iceberg broke off earlier this month from the Mertz Glacier's 160 km (100 miles) floating tongue of ice that sticks out into the Southern Ocean.
The collision has since halved the size of the tongue that drains ice from the vast East Antarctic ice sheet.
"The break up (calving) itself hasn't been directly linked to climate change but it is related to the natural processes occurring on the ice sheet," said Rob Massom, a senior scientist.
This 97 km long slab of ice is a remnant of an iceberg of more than 5,000 sq km that broke off, or calved, in 1987, making it one of the largest icebergs ever recorded in Antarctica
Click on the headline for more detailed information