Only 28 people have ever set foot on the remote Thwaites Glacier in West Antarctica. It is one of the widest places on the planet and is around the size of Gujarat. However, it is only a small portion of the West Antarctic ice sheet, which, according to NASA, is large enough to increase the sea level by up to 16 feet.
This area has been widely watched as the climate crisis has intensified due to its rapid melting and extensive coastline erosion. Researchers questioned if it was in serious danger of collapsing in 1973.
Nearly ten years later, they discovered that since the glacier is tethered to the seabed rather than to land, warm ocean currents may cause it to melt from below, leading to its destabilisation.
According to Peter Davis, a British Antarctic Survey oceanographer, large fractures are spreading across the surface of the ice shelf, weakening the ice structure much like a windscreen crack, as shown in satellite data. As a result, it is gradually expanding across the ice shelf and will eventually break up into several fragments.
The effects of climate change and rising temperatures are particularly severe in Thwaites. It is a floating ice shelf that serves as a dam to reduce the rate at which ice flows into the ocean from the continent. According to a recent article, scientists have created a new artificial intelligence (AI) to show how it is being harmed.
Intricate interaction
The Thwaites Glacier Ice Tongue has reportedly increased in speed twice over the past six years—from 4 km per year to 6 km per year before slowing—by about 40% each time. The scientists discovered a complicated interaction between the speed of the ice flow and crevasse creation.
According to Dr. Anna Hogg, a glaciologist at the University of Leeds, dynamic changes in ice shelves are typically believed to take place over the course of decades to centuries. It was so unexpected to witness this massive glacier accelerate and decelerate so swiftly. The study also highlights the crucial function that fractures serve in releasing the flow of ice.
Fracture tracking
In order to better predict the fate of the Doomsday glacier as conditions get worse due to climate change, the AI can assist in locating fissures and crevasses in the ice beneath the snow that is currently covering it. The West Antarctic glacier is in a phase of rapid retreat, according to past research, which has alarmed people all around the world.
An AI technique originally developed to recognise cells in microscopic photos was merged with Copernicus Sentinel-1 satellite imagery and routine synthetic aperture radar surveillance of coastal Antarctica in a study published in Nature Geoscience.
This method will enable researchers to more precisely track and predict changes on this glacier. The grounding line, or area of the glacier system where the ice flows into the sea and starts to float, was the focus of research.
Many believe that the glacier poses a serious threat to coastal cities worldwide and that it can quickly elevate sea levels by about 60 cm. The entire glacier system and potential rise in sea level may be significantly impacted by the changes to the ice shelves.
