Articles | Volume 13, issue 1
Biogeosciences, 13, 27–44, 2016
https://doi.org/10.5194/bg-13-27-2016

Special issue: Freshwater ecosystems in changing permafrost landscapes

Biogeosciences, 13, 27–44, 2016
https://doi.org/10.5194/bg-13-27-2016

Research article 14 Jan 2016

Research article | 14 Jan 2016

Detection and spatiotemporal analysis of methane ebullition on thermokarst lake ice using high-resolution optical aerial imagery

P. R. Lindgren et al.

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Short summary
We mapped and characterized methane ebullition bubbles trapped in lake ice, and estimated whole-lake methane emission using high-resolution aerial images of a lake acquired following freeze-up. We identified the location and relative sizes of high- and low-flux seepage zones within the lake. A large number of seeps showed spatiotemporal stability over our study period. Our approach is applicable to other regions to improve the estimation of methane emission from lakes at the regional scale.
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