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April 19, 2025 - Icebergs A-74a and A-74c
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On April 16, 2025, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this true-color image of two drifting icebergs, A-74A and A-76C. These icebergs were located just north of the Antarctic Peninsula and south of the South Georgia and South Sandwich Islands, floating slowly northward towards the Southern Ocean on a path frequently followed by Antarctic Icebergs.
The larger berg is A-74A, the largest portion of the massive Iceberg A-74 which calved off the Brunt Ice Shelf in February 2021. At that time, the big berg covered an area of 1,270 square kilometers (490 square miles) and was said to be more than twice the size of the city of Chicago, Illinois.
The smaller iceberg is A-76C, a fragment of another large iceberg known as A-76 which calved off the Filchner-Ronne Ice Shelf in May 2021. On May 26, shortly after calving, A-76 shattered and calved two new large icebergs. The biggest of the three fragments was named A-76A, with the other two named A-76B and A-76C. A-76C was the smallest of the three fragments and it is the only one that remains large enough to be monitored by the U.S. National Ice Center.
Image Facts
Satellite:
Terra
Date Acquired: 4/16/2025
Resolutions:
1km (231 KB), 500m (593.6 KB), 250m (1.3 MB)
Bands Used: 1,4,3
Image Credit:
MODIS Land Rapid Response Team, NASA GSFC
On April 16, 2025, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this true-color image of two drifting icebergs, A-74A and A-76C. These icebergs were located just north of the Antarctic Peninsula and south of the South Georgia and South Sandwich Islands, floating slowly northward towards the Southern Ocean on a path frequently followed by Antarctic Icebergs.
The larger berg is A-74A, the largest portion of the massive Iceberg A-74 which calved off the Brunt Ice Shelf in February 2021. At that time, the big berg covered an area of 1,270 square kilometers (490 square miles) and was said to be more than twice the size of the city of Chicago, Illinois.
The smaller iceberg is A-76C, a fragment of another large iceberg known as A-76 which calved off the Filchner-Ronne Ice Shelf in May 2021. On May 26, shortly after calving, A-76 shattered and calved two new large icebergs. The biggest of the three fragments was named A-76A, with the other two named A-76B and A-76C. A-76C was the smallest of the three fragments and it is the only one that remains large enough to be monitored by the U.S. National Ice Center.
Image Facts
Satellite:
Terra
Date Acquired: 4/16/2025
Resolutions:
1km (231 KB), 500m (593.6 KB), 250m (1.3 MB)
Bands Used: 1,4,3
Image Credit:
MODIS Land Rapid Response Team, NASA GSFC
