NASA's iceberg data includes current and historical measurements useful for mapping icebergs, glaciers that calve them, and their characteristics.
The embedded view above shows a series of false-color corrected reflectance images of iceberg A23A in the Southern Ocean, Antarctica. Press "Play" in the lower left corner of the embedded map to watch iceberg A23A move through the Southern Ocean.
When a piece of a glacier breaks off, it's called calving, and results in an iceberg.
The animation above shows a series of true-color corrected reflectance images from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard the Terra platform of Iceberg A23A moving toward South Georgia Island in Antarctica. Press the "Play" button in the lower left corner to view the animation spanning the dates , to . A23A is currently the ...
Iceberg A23A calved from East Antarctica's Filchner–Ronne Ice Shelf in 1986. Forty years later, it is finally disappearing, and rapidly. This true-color corrected reflectance image captured on Jan. 13, 2026, by the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard the Aqua platform shows the iceberg melting, turning blue, and breaking apart in the South Atlantic between ...
NASA's true-color corrected reflectance image of Iceberg A23A and iceberg A23F was captured on , from the MODIS instrument aboard the Aqua satellite.
Iceberg A23A was captured in this false-color corrected reflectance (Bands 7-2-1) image from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua platform on . The iceberg, the big blue object southwest of the island, has run aground near South Georgia Island in Antarctica
The iceberg is approximately 1550 km 2, which is about twice the size of New York City. Professor Dominic Hodgson, British Antarctic Survey glaciologist, states that the calving was expected, is part of the natural behavior of the Brunt Ice Shelf, and is not linked to climate change.