Figure 6
From: The effect of tidal forcing on biogeochemical processes in intertidal salt marsh sediments
Water level changes (from low tide levels) and porewater Mn2+, Fe2+, ΣH2S, org-Fe(III)(aq), and FeS(aq) measured in situ at five fixed depths and as a function of time during a tidal cycle at the mud flat site in June 2003. a) Well water levels measured at the sediment-water interface (SWI) and 15 cm below the SWI, and tidal fluctuations obtained from the Fort Pulaski NOAA buoy; Concentrations (left) and current intensities (right) measured: b) in the overlying water; c) at the SWI; d) at 3.5 cm; e) at 7.0 cm; and f) at 10.5 cm. Dissolved oxygen was never detected in the porewaters.