Under the Tundra: Thawing Permafrost — Arctic tundra is underlain by permafrost, perennially frozen ground which stores methane and carbon dioxide. But in our changing world, the Arctic is warming twice as fast as the rest of the globe. As permafrost thaws the land above can fail, forming thermokarst features, sinkholes and landslides. In these videos geophysical researchers track permafrost changes to better understand the implications of this transformation.
Arctic Permafrost and Climate Change
According to Vladimir Romanovsky, Geophysics professor at the University of Alaska Fairbanks, the most common definition of permafrost is any material below ground which is at or below 0 degrees Celsius for two or more years consecutively.
[ video ] The Permafrost Tilted House Vladimir Romanovsky visits Fairbanks resident Ruth Macchioni to talk about permafrost effects on houses and how to build over permafrost.
[ video ] It’s A Bore Hole! Vladimir Romanovsky and Sergey Marchenko visit a bore hole and download data collected over a year’s time. Marchenko and Romanovsky describe what the collected data shows about permafrost.
[ video ] Permafrost Patterns Ronald Daanen (assistant professor at the University of Alaska, Fairbanks) and Vladimir Romanovsky (professor in Geophysics, and professor of geology at the University of Alaska, Fairbanks) explain patterns that permafrost has created in the Arctic.
Video locations: Fairbanks, Alaska, & Boreholes located throughout Alaska
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