Fig. 2: Vertical sulfate concentration gradient and the corresponding anaerobic oxidation of methane (AOM) capacity. | Communications Earth & Environment

Fig. 2: Vertical sulfate concentration gradient and the corresponding anaerobic oxidation of methane (AOM) capacity.

From: Anaerobic oxidation has a minor effect on mitigating seafloor methane emissions from gas hydrate dissociation

Fig. 2

a Schematic view (not to scale) of the transient response of the vertical sulfate profile to a sudden increase in CH4 flux from below, with inspiration from24. S(t,z) is sulfate concentration, t is time in years, and z is depth below seafloor in meters. Ssw is the fixed bottom water sulfate concentration and SMT is the sulfate-methane transition at the base of sulfate-reduction zone. b The Egger relation25 describes the depth-integrated AOM capacity as a function of SMT depth. The SMTmin for Cases A and B2-B5 are shown as black circles (Case B1 is outside the plotted range).

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