Some of the most remarkable, marginal features of permafrost – palsas – are degrading and disappearing metre by metre from North European peatlands, and are driven close to extinction by the climate change. What are these permafrost features? A palsa is a peat mound with an icy core, which stays frozen throughout summer due to the insulating property of dry peat. These mounds can rise up to 10 met ...[Read More]
Image of the Week – Permafrost features disappearing from subarctic peatlands
Remnants of palsa, most of which has already collapsed into surrounding pond [Credit: Mariana Verdonen].