Permafrost—ground that remains frozen year-round—is capped by a few feet of dirt and plant detritus. Called the active layer, this soil normally thaws each summer and refreezes in winter ...

Lachenbruch was an expert in permafrost, the rock-like layer of frozen soil just below the thin, insulated cover of soil and vegetation. In December 1970, he released a study in which he explained ...

Permafrost, a perpetually frozen layer under the ground surface, contains rocks, soil, sand and, in some cases, pockets of pure ice. But not all permafrost warms up in the same way. Most Arctic ...

Christina Shintani / Woodwell Climate Research Center Permafrost is soil, rock, or sediment that remains frozen for two or more consecutive years. It is found in high-latitude regions, such as the ...

Core samples had been taken from just the top three metres of permafrost. The study instead analysed mercury in sediments in riverbanks and sandbars, tapping into deeper soil layers. It found that ...

TASS/. The permafrost’s thawing in the tundra causes gradual, unobvious migration of pollutants into the soil’s upper layers thus threatening the Arctic territories, where intensive ...

This trend poses a significant threat to permafrost, which contains approximately one-third of the world’s soil organic carbon ... A sediment core was extracted from GSL, reaching depths ...

More needs to be done to better understand rapidly changing Arctic landscapes that are sinking as climate-driven permafrost ...

"In Sweden, permafrost lands are important as soil carbon reservoirs and for traditional land use practices, such as reindeer herding. Like in other regions of the Arctic, permafrost thaw is ...

The viruses, which were found in an ice core collected in 2015 ... makeup suggests they would have more likely originated from soil or plants, not animals or humans. The findings were published ...