Articles | Volume 17, issue 12
https://doi.org/10.5194/bg-17-3247-2020
https://doi.org/10.5194/bg-17-3247-2020
Research article
 | 
26 Jun 2020
Research article |  | 26 Jun 2020

Assessing the potential for non-turbulent methane escape from the East Siberian Arctic Shelf

Matteo Puglini, Victor Brovkin, Pierre Regnier, and Sandra Arndt

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Cited articles

Aguilera, D., Jourabchi, P., Spiteri, C., and Regnier, P.: A knowledge-based reactive transport approach for the simulation of biogeochemical dynamics in Earth systems, Geochem. Geophy. Geosy., 6, Q07012, https://doi.org/10.1029/2004GC000899, 2005. a
Aloisi, G., Wallmann, K., Haese, R., and Saliege, J.-F.: Chemical, biological and hydrological controls on the 14C content of cold seep carbonate crusts: numerical modeling and implications for convection at cold seeps, Chem. Geol., 213, 359–383, 2004. a, b
Aris, R.: Prolegomena to the rational analysis of systems of chemical reactions II. Some addenda, Arch. Ration. Mech. An., 27, 356–364, 1968. a
Arndt, S., Jørgensen, B. B., LaRowe, D. E., Middelburg, J., Pancost, R., and Regnier, P.: Quantifying the degradation of organic matter in marine sediments: a review and synthesis, Earth-Sci. Rev., 123, 53–86, 2013. a, b
Athy, L. F.: Density, porosity, and compaction of sedimentary rocks, AAPG Bull., 14, 1–24, 1930. a
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A reaction-transport model to assess the potential non-turbulent methane flux from the East Siberian Arctic sediments to water columns is applied here. We show that anaerobic oxidation of methane (AOM) is an efficient filter except for high values of sedimentation rate and advective flow, which enable considerable non-turbulent steady-state methane fluxes. Significant transient methane fluxes can also occur during the building-up phase of the AOM-performing biomass microbial community.
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