Geophysical Institute Permafrost Laboratory

Permafrost thaw and receding glaciers enhance geologic methane seepage

Sun, 2012-05-20 16:03 — ggrosse

A new article published in Nature Geoscience led by Dr. Katey Walter Anthony and co-authored by Dr. Guido Grosse from the GI Permafrost Lab highlights findings of geologic methane seepage in zones of Arctic permafrost thaw and receding glaciers. Results indicate that in a warmer future climate, deep geologic methane sources currently trapped under a Cryosphere cap may increasingly contribute to the greenhouse gas budget of the Earth's atmosphere as this cap is degrading.

All articles by ggrosse

Recent Paper on Sea-bed Permafrost North of Barrow, Alaska (Beaufort Sea) and Degradation

Sun, 2012-05-13 10:31 — rmuskett

A recent paper, Dr. Vladimir Romanovsky is co-author, details seabed geoelectric field observations of ice-rich sea-bed permafrost and estimate of the degradation rate. Sea-bed permafrost like permafrost on land can hold substantial amounts of methane, a very potent greenhouse gas. Degradation of sea-bed permafrost on the shallow continental shelves of the coastal seas of the Arctic Ocean could 'ignite' a substantially positive feedback loop with the atmosphere-land-ocean systems in the Arctic with global impact. The paper is published in JGR - Earth Surface, v.

All good things come in threes: Third paper on permafrost and thermokarst dynamics highlighted by JGR Biogeosciences

Wed, 2012-03-21 12:46 — ggrosse

A third paper resulting from our group's work on permafrost and thermokarst dynamics, funded by NASA Carbon Cycle Sciences and the NSF Arctic Program, was now selected as Editors' Highlight in Journal of Geophysical Research - Biogeosciences and as Research Spotlight in EOS.

Frontier Scientists - Permafrost Videos

Tue, 2012-01-31 10:42 — wlcable

Main Content Inline Small Fairbanks, Alaska, January 31, 2012--- Permafrost is an underground phenomena but three new videos, with beautiful footage and photos, allow you to see permafrost with your own eyes.

University of Alaska-Fairbanks scientists Vladimir Romanovsky, Sergey Marchenko, and Ronald Daanen describe permafrost in videos “It’s a Bore Hole”, “The Permafrost Tilted House” and“Permafrost Patterns”.