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Sea ice tracker

Scientist in Antarctica placing a sea ice tracking buoy on sea ice.

University of Otago PhD candidate Antonia Radlwimmer prepares a sea ice tracker to collect data on sea ice as it breaks apart and moves away from the ice shelf.

A GPS tracker inside the plastic buoy-like container communicates in real time with the Iridium network of satellites in a low-Earth orbit. Learn more in this explainer from the first year when the trackers were deployed.  

Glossary

Rights: Inga Smith
Published: 14 August 2025Size: 4.51 MB
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