Fallout plutonium in two oxic‐anoxic environments1

Sanchez, Anthony; Murray, James W.; Schell, W.R.; Miller, Laurence G.

doi:10.4319/lo.1986.31.5.1110

Cited by 19 publications

(5 citation statements)

References 36 publications

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“…Phosphates trapped within the bottom anoxic water would also precipitate in various forms with iron. The role of bacteria as well as the chemical dynamics of O,/H,S interfaces of meromictic lakes have been studied in detail by several authors (Wetzel, 1975;Jorgensen et al, 1979;Postgate, 1979;Cloem etal., 1983;Sanchez et al, 1986) and is beyond the scope of the present study.…”

Section: Dissolved O Hs and Trace Metalsmentioning

confidence: 87%

Physico-chemical characteristics and origin of hypersaline meromictic Lake Garrow in the Canadian high Arctic

Ouellet

Dickman

Bisson³

et al. 1989

Hydrobiologia

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Garrow Lake (75' 23' N; 96" 50' W), located 3 km from the southern tip of Little Comwallis Island and 6.7 m above mean sea level, is a meromictic ecto-creno-cryogenic lake with an area of 418 ha and a maximum water depth of 49 m. The thermal stratification of this lake is mesothermic (heliothermic). Some of the solar energy that penetrates through the 2 m ice cover is stored for a long period of time in the upper level of the monimolimnion, under a greenhouse effect due the water density gradient. The energy transfer (0.06 "C m-') by conduction toward the bottom sediments is very constant from one year to the next and is likely to prevent the presence of permafrost under this water body.In its chemical composition, this meromictic lake is quite comparable to the world's saltiest water bodies and is the first lake, with a salinity greater than sea water to be reported for the Canadian Arctic. Its anoxic monimolimnion is nearly three times (90x,,) as salty as normal sea water.This hypersaline water seems to have been derived from isostatic trapped marine waters within the present lacustrine basin as well as from underground during deglaciation of the area. The subsequent freezing-out of salt from the underground waters and the migration and accumulation of these waters in the bottom of Garrow Lake through a talik within the permafrost were the main contributing factors. The speed of formation and migration of the underground brine was a function of the postglacial isostatic uplift rate as well as the permafrost growth rate.

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Section: Dissolved O Hs and Trace Metalsmentioning

confidence: 87%

Physico-chemical characteristics and origin of hypersaline meromictic Lake Garrow in the Canadian high Arctic

Ouellet

Dickman

Bisson³

et al. 1989

Hydrobiologia

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“…Surface salinities were 15% o in Soap Lake [Sanchez et al, 1986], 27% o in Big Soda Lake [see Zehr et al, 1987], and 78% o in Mono Lake (L. Miller, unpublished data, 1984}. Bottom water sulfate concentrations were 68 mM in Big Soda Lake [Oremland and Des Marais, 1983], 133 mM in Mono Lake and 265 mM in Soap Lake [Sanchez et al, 1986]. Searsville Lake, California is a seasonally stratified, freshwater reservoir with < 1% o surface salinity and < 1 mM dissolved sulfate (L. Miller, unpublished data, 1986}.…”

Section: And Site Descriptionsmentioning

confidence: 97%

“…The three alkaline, saline lakes (Big Soda Lake, Nevada; Soap Lake, Washington; and Mono Lake, Cal-ifornia} were meromictic. Surface salinities were 15% o in Soap Lake [Sanchez et al, 1986], 27% o in Big Soda Lake [see Zehr et al, 1987], and 78% o in Mono Lake (L. Miller, unpublished data, 1984}. Bottom water sulfate concentrations were 68 mM in Big Soda Lake [Oremland and Des Marais, 1983], 133 mM in Mono Lake and 265 mM in Soap Lake [Sanchez et al, 1986].…”

Section: And Site Descriptionsmentioning

confidence: 99%

Methane efflux from the pelagic regions of four lakes

Miller¹,

Oremland²

1988

Global Biogeochemical Cycles

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Methane emission to the atmosphere was studied in the deepest, central (“pelagic”) regions of one freshwater and three meromictic, alkaline saline lakes. The range of methane emissions was 0.0004 to 2.916 mmol m−2 h−1 (n = 41). Outward flux was dominated by bubble ebullition only in the freshwater lake. Diffusive gas exchange was the sole mechanism of transfer in the meromictic lakes, and flux from these lakes was equivalent to or lower than that from the freshwater lake during its periods of ebullition. A comparison of measured flux with flux calculated using a model of gas exchange in Mono Lake suggested that floating chambers provide reasonable estimates of the magnitude of methane emissions from diffusion‐dominated systems.

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“…Plutonium in the water column of Mono Lake appears to be predominantly in the IV oxidation state (Nelson et al 1989), providing an exception to the rule about the high sediment affinity of Pu(IV), and demonstrating that under some conditions the distribution of Pu(IV) is dominated by enhanced solution complexation. Further evidence comes from a study of Soap Lake in Washington State (Sanchez et al 1986). Further evidence comes from a study of Soap Lake in Washington State (Sanchez et al 1986).…”

Section: 240pumentioning

confidence: 99%

“…The following summary of its main biogeochemical characteristics is taken from several sources (chiefly Cooke and Bruland 1987;Weres et al 1989;Masscheleyn et al 1991). (Sanchez et al 1986) importantly in various organic forms including seleno amino acids in biota and volatile alkyl species. Chemical eqUilibrium is rarely achieved with regard to the various oxidation states.…”

Section: Seleniummentioning

confidence: 99%