Saanich inlet

Fig. 16-8 Depth distribution of the concentration of redox couples in a partially anoxic f]ord, Saanich Inlet. (Redrawn from Emerson et al., 1979.)...

O2, Mn, pH, and solid concentrations indicates that the character of the solid is important partly because some surfaces bind Mn " more strongly and partly because they facilitate the electron transfer differently. Catalysis by enzymes is clearly the most effective oxidation enhancing process as indicated by the laboratory studies with spores and material from the O2/H2S interface of Saanich Inlet. Microbial catalysis in this environment reduces the oxidation lifetime of Mn to about one day. This example illustrates... 

Table 16-6 Redox half reactions, pg°, pe, and calculated pe values from the redox species distributions psc for the zone 125-135 m in Saanich Inlet...

Wong et al. [38] conducted an inter comparison of sampling devices using seawater at 9 m in a plastic enclosure of 65 m in Saanich Inlet, BC, Canada. The sampling methods were ... 

Table 8.5. Sulfate concentrations Cs°4 (mmol l 1) at depth z (cm) in pore waters from the Saanich Inlet, British Columbia (Murray et al., 1978).

Figure 8.23 Sulfate concentrations in pore waters as a function of the depth below the water-sediment interface of the Saanich Inlet Murray et al. (1978). The exponential curve supports the diffusional diagenetic model.

Murray, J. W., Grundmanis, V. Smethie, W. M. (1978). Interstitial water chemistry in the sediments of Saanich Inlet. Geochim. Cosmochim. Acta, 42, 1011-26. 

Locations of disseminated (nonphosphorite) authigenic CFA occurrence, as well as locations of phosphorites. Areas with substantial phosphorite deposits include the East China Sea between Korea and Japan, Ceara Rise, Saanich Inlet, eastern and western equatorial Pacific, California Borderland Basins, Gulf of St. Lawrence, Labrador Sea, Long Island Sound, Gulf of Mexico, North Atlantic continental platform, and Iberian margin in the northeastern Atlantic. Source From Ruttenberg, K. C. (2003). Treatise on Geochemistry, Elsevier Ltd. pp. 585-643. 

The observations in Lake Greifen are in line with other studies of As(III) and As(V) at oxic-anoxic boundaries (16, 17, 76). In Saanich Inlet (16) and in Lake Pavin (17), increasing As(III) concentrations were found below the 02-H2S boundary, although the reduction of As(V) was not complete. A similar situation is encountered in Lake Greifen, in which sulfide is only an intermittent species. The formation of reduced and methylated As species in the upper layers of various lakes has also been described in ref. 76. 

These results are in broad agreement with the findings in ref. 11, which indicate the reduction of Cr(VI) in the presence of H2S. In Saanich Inlet H2S is always present in the deeper water, whereas in Lake Greifen an intermediate situation is observed with the predominance of Mn(II) in the hypolimnion. The method used for the determination of Cr(III) in ref. 11 would probably include colloidal Cr(III) the present study attempted to determine dissolved Cr(III). 

Saanich Inlet British Columbia, Canada bottom waters... 

Saanich Inlet Washington, USA sediment porewaters 23 analyses... 

Saanich Inlet British Columbia, Canada 22 analyses from 1.3-16 Peterson and Carpenter (1986)... 

Peterson, M.L. and Carpenter, R. (1986) Arsenic distributions in porewaters and sediments of Puget Sound, Lake Washington, the Washington Coast and Saanich Inlet, BC. Geochimica et Cosmochimica Acta, 50(3), 353-69. 

Presley, B.J., Kolodny, Y., Nissanbaum, A. and Kaplan, I.R. (1972) Early diagenesis in a reducing fjiord, Saanich Inlet British - II Trace element distribution in interstitial water and sediment Columbia. Geochim. Cosmochim. Acta, 36, 1073-1075. 

Figure 3. An example of vertical distributions of chlorophyll a (A) and particulate glutathione (B) in Saanich Inlet, B.C. (Reproduced with permission from Reference 36. Copyright 1988 American Society of Limnology and Oceanography, Inc.)...

Todd, J.F., Elsinger, R.J., and Moore, W.S. (1988) The distributions of uranium, radium, and thorium isotopes in two anoxic fjords Framvaren Fjord (Norway) and Saanich Inlet (British Columbia). Mar. Chem. 23, 393—415. 

Tunnicliffe, V. (2000) A fine-scale record of 130 years of organic carbon deposition in an anoxic fjord, Saanich Inlet, British Columbia. Limnol. Oceanogr. 45, 1380-1387. 

N2O profiles from oceanic regions with suboxic zones such as the Arabian Sea and the eastern tropical North Pacific Ocean, which are sites of intense denitrification activities, generally show a two-peak structure (Fig. 2.3) N2O maxima are found at the upper and lower boundaries of the oxygen minimum zone (OMZ), whereas in the core of the suboxic zone, N2O concentrations are considerably depleted (Bange et ah, 2001b Cohen and Gordon, 1978). In anoxic water masses such as found in the central Baltic Sea, the Cariaco Basin, and Saanich Inlet, N2O concentrations are close to the detection limit or not detectable (Brettar and Rheinheimer, 1991 Cohen, 1978 Hashimoto et ah, 1983 Ronner, 1983 Walter et ah, 2006b). 

Cohen, Y. (1978). Consumption of dissolved nitrous oxide in an anoxic basin, Saanich Inlet, British... 

Figure 6.Z( Dissolved oxygen versus nitrite concentration for the waters of the ODZ (<20 tM O2) the eastern tropical North Pacific (upper, redrawn from Cline and Richards, 1972), the Arabian Sea (center, redrawn after Morrison et ai, 1999), and Saanich Inlet (lower, redrawn from Devol, 1975). Note, axes are different on each plot. Vertical lines denote possible denitrification thresholds for each area.

Anderson, J. J., and Devol, A. H. (1973). Deep-Water renewal in Saanich Inlet, an intermittendy anoxic basin. Estuar. coast, mar. sci. 1, 1—10. 

Bird, D. F., Juniper, S. K., Ricciardi-Rigault, M., Martineu, P., Prairie, Y. T., and Calvert, S. E. (2001). Subsurface viruses and bacteria in Holocene/Late Pleistocene sediments of Saanich Inlet, BC OOP Holes 1033B and 1034B, Leg 169S. Mar. Geol. 174, 227-239. 

Lee B. S., Bulhster J. L., and Whitney F. A. (1999) Chlorofluorocarbon CFC-11 and carbon tetrachloride removal in Saanich Inlet, an intermittently anoxic basin. Mar. Chem. 66, 171-185. 

Anderson R. F., Lehuray A. P., Fleisher M. Q., and Murray J. W. (1989) Uranium deposition in Saanich Inlet sediments, Vancouver Island. Geochim. Cosmochim. Acta 53(9), 2205-2213. 

The absence of elevated molybdenum concentrations in particulate samples from sediment traps deployed in the water columns of modem anoxic basins (e.g., Saanich Inlet, Cariaco Basin, and Black Sea) has suggested to some that... 

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