Figure 4
From: Reduced gravity promotes bacterially mediated anoxic hotspots in unsaturated porous media
Changes in the anoxic conditions and wetted area with changing gravity conditions. (A) Boxplots show the minimum oxygen concentration reached at the end of the parabola (yellow data points in Fig. 3B) for three gravity conditions (Martian, Lunar, and zero gravity) and in sterile networks at zero gravity. Inoculated networks and sterile networks experiencing zero gravity differ significantly. Furthermore, a decline in residual oxygen concentration is visible with decreasing gravitational acceleration. (B) Boxplots show the wetted area at the end of the parabola relative to the wetted area at 1 g for four values of gravitational acceleration. Wetted area (the area around aggregates which are visibly wetted taken as a proxy for liquid volume around the hotspot) increases with decreasing gravitational acceleration. The geometry used in the mathematical model captures this trend well (dashed red line).
