The polygons appear to be roughly 70 meters across and are bordered by wedges nearly 30 meters wide and tens of meters deep — about 10 times as large as typical polygons and wedges on Earth.

The troughs around the ice wedge polygons are very shallow, and could not be considered streams or creeks, but rather they are a kind of depression on the landscape and can act as a drainage network.

Low-centered ice wedge polygons form a pool in the middle of the ridged outer part. High-centered ice wedges look more like muffins, Liljedahl said, and are evidence of ice wedge melting.

Using deep learning and supercomputers, researchers have been able to identify and map 1.2 billion ice wedge polygons in the Arctic permafrost based on satellite imagery. The data helps establish ...

Progress of automated ice-wedge polygon prediction from sub-meter resolution commercial satellite imagery. So far, researchers have mapped more than 1 billion individual-ice wedge polygons across ...

Ice wedges are a particularly cool surface feature in the Arctic tundra. ... or by draining and drying polygon-shaped ponds by connecting them into a continuous drainage network." ...

Feb. 22, 2022 — Using deep learning and supercomputers, researchers have been able to identify and map 1.2 billion ice wedge polygons in the Arctic permafrost based on satellite imagery.

Liljedahl says as the structure of polygon ice wedges degrade, new channels for water are formed, ultimately draining and drying the landscape. The implications are varied, she says.

Alaska's Barrow Peninsula is characterized by irregular distributions of meadows, aquatic features and ice-wedge polygon formations within a mosaic of lakes, drained lake basins and surrounding ...