Table of Contents
Geosciences, Volume 10, Issue 10 (October 2020) – 40 articles
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Cover Story (view full-size image) The active emission of gas (mainly methane) from terrestrial and subsea permafrost in the Russian [...] Read more. The active emission of gas (mainly methane) from terrestrial and subsea permafrost in the Russian Arctic has been confirmed by ample evidence. A generalization and some systematization of gas manifestations recorded in the Russian Arctic are carried out. All events of onshore and shelf gas release may be divided into natural and man-caused and the natural events can be further classified as venting from lakes or explosive emissions in dryland conditions that produce craters on the surface. Observed man-caused gas manifestations associated with the drilling of geotechnical and production wells in the Arctic region. The reported evidence demonstrates the effect of permafrost degradation on gas release. View this paper