A new study of Antarctica has found that an ice stream in West Antarctica is radiating seismic signals, providing scientists with a way to track its movement and better understand how the continent is melting.

The study, published in the journal Nature Geoscience, used seismic data collected by the Polar Earth Observing Network (POLENET), a network of seismic stations installed across Antarctica. The researchers found that the Thwaites Ice Stream is producing a continuous seismic signal that is unrelated to earthquakes.

According to the researchers, the seismic signal is caused by the movement of the ice stream over its bed. As the ice moves, it creates friction and produces vibrations that can be detected by seismic instruments. The researchers say that the seismic signal can be used to track the movement of the ice stream and to measure its speed and direction.

The Thwaites Ice Stream is one of the largest and fastest-moving ice streams in Antarctica. It is located in West Antarctica, where the ice sheet is thinning and melting at an accelerating rate. Scientists are concerned that the Thwaites Ice Stream could collapse, which would lead to a significant rise in sea levels.

The new study provides scientists with a new tool to track the movement of the Thwaites Ice Stream and to better understand how it is melting. This information will be essential for developing strategies to mitigate the effects of climate change and protect the Antarctic ice sheet.