Articles | Volume 24, issue 12
Technical note
22 Dec 2020
Technical note |  | 22 Dec 2020

Technical note: Mobile open dynamic chamber measurement of methane macroseeps in lakes

Frederic Thalasso, Katey Walter Anthony, Olya Irzak, Ethan Chaleff, Laughlin Barker, Peter Anthony, Philip Hanke, and Rodrigo Gonzalez-Valencia

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Subject: Rivers and Lakes | Techniques and Approaches: Instruments and observation techniques
Hydrological, meteorological, and watershed controls on the water balance of thermokarst lakes between Inuvik and Tuktoyaktuk, Northwest Territories, Canada
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Cited articles

Bastviken, D., Tranvik, L. J., Downing, J. A., Crill, P. M., and Enrich-Prast, A.: Freshwater Methane Emissions Offset the Continental Carbon Sink, Science, 331, p. 50,, 2011. 
Bowen, R. G., Dallimore, S. R., Cote, M. M., Wright, J. F., and Lorenson, T. D.: Geomorphology and Gas Release from Pockmark Features in the Mackenzie Delta, Northwest Territories, Canada, in: Proceedings of the Ninth International Conference on Permafrost, University of Alaska, Fairbanks, U.S., 29 June–3 July 2008, 171–176, 2008. 
Collett, T. S., Lee, M. W., Agena, W. F., Miller, J. J., Lewis, K. A., Zyrianova, M. V., Boswell, R., and Inks, T. L.: Permafrost-associated natural gas hydrate occurrences on the Alaska North Slope, Mar. Petrol. Geol., 28, 279–294,, 2011. 
Davis, M. P., Groh, T. A., Parkin, T. B., Williams, R. J., Isenhart, T. M., and Hofmockel, K. S.: Portable Automation of Static Chamber Sample Collection for Quantifying Soil Gas Flux, J. Environ. Qual., 47, 270–275,, 2018. 
DelSontro, T., Kunz, M. J., Kempter, T., Wüest, A., Wehrli, B., and Senn, D. B.: Spatial Heterogeneity of Methane Ebullition in a Large Tropical Reservoir, Environ. Sci. Technol., 45, 9866–9873,, 2011. 
Short summary
Methane (CH4) seepage is the steady or episodic flow of gaseous hydrocarbons from subsurface reservoirs that has been identified as a significant source of atmospheric CH4. The monitoring of these emissions is important and despite several available methods, large macroseeps are still difficult to measure due to a lack of a lightweight and inexpensive method deployable in remote environments. Here, we report the development of a mobile chamber for measuring intense CH4 macroseepage in lakes.