Distribution of methane and carbon monoxide between the atmosphere and natural waters

Swinnerton, J. W.; Linnenbom, V. J.; Cheek, C. H.

doi:10.1021/es60032a006

Cited by 87 publications

(31 citation statements)

References 6 publications

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“…87 Ocean transect 91 involving sampling at 2°intervals from 27°S to 5°N was consistent with previous work and showed that the mixed layer maximum is a consistent feature, except near the equator. Most of these saturation measurements preceded reliable seawater solubility measurements, 56,57 so saturation was assessed by differences in free-air and equilibrator gas-phase concentrations.…”

Section: Oceanic Water Column Methane Distributionssupporting

confidence: 90%

Oceanic Methane Biogeochemistry

2007

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from 1968 until 1993, when he joined the University of California Irvine as one of the founding faculty of the Program in Geosciences, now the Department of Earth System Science. He was editor of Global Biogeochemical Cycles from 1998 to 2004 and was elected AGU Fellow in 2001. His research focus has been on methane geochemistry, particularly documenting the occurrence and extent of anaerobic oxidation of methane, and recent measurements of natural stable isotopes ( 2 H-CH 4 , 13 C-CH 4 ) and radiocarbon ( 14 C-CH 4 ) in methane from anoxic marine sediments and waters.

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Section: Oceanic Water Column Methane Distributionssupporting

confidence: 90%

Oceanic Methane Biogeochemistry

2007

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“…Scattered data for surface waters of estuarine systems also exist. Swinnerton et al (1969) and Lamontagne et al (1973) measured elevated methane levels in Chesapeake Bay, while Brooks and Sackett (1973) and Brooks et al (1973) reported supersaturated CH, values for portions of the Mississippi delta. Additionally, Sebacher and Harriss (1982) and Bartlett et al (1985) analyzed CH, in the surface waters of tidal creeks at various tidal stages in a salt marsh.…”

Section: Methane In Surface Waters Of Oregon Estuaries and Rivers'mentioning

confidence: 96%

“…The only direct measurements of CH, flux for these environments are those reported for a Florida canal and estuary (Zimmerman 1977). Surface CH, concentrations, from which methane fluxes to the atmosphere can be calculated, have been reported for a few polluted North American rivers (Swinnerton et al 1969;Lamontagne et al 1973) and one natural river in New Guinea (Wilkniss et al 1978). All samples were found to be supersaturated with CH, with respect to the atmosphere.…”

Section: Methane In Surface Waters Of Oregon Estuaries and Rivers'mentioning

confidence: 99%

“…Swinnerton et al (1969) and Lamontagne et al ( 1973) measured methane levels ranging from 11 to 1,700 nM (R = 6-5 7 5) in three major North American rivers and attributed the large supersaturations to pollution. However, Wilkniss et al (1978) observed surface concentrations averaging 102 nM CH, (R = 52) in a pristine river in New Guinea where biogenic production was the sole source mechanism.…”

Section: Methane In Surface Waters Of Oregon Estuaries and Rivers'mentioning

confidence: 99%

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Methane in surface waters of Oregon estuaries and rivers1

Angelis

Lilley

1987

Limnology & Oceanography

120

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Methane concentrations in surface waters of Oregon rivers and estuaries were measured over a 4‐yr period. Geographic variations in riverine CH4 were observed. Results from undisturbed forest streams indicate that rivers can contain high natural levels of CH4 not attributable to pollution. Lateral diffusion and runoff from saturated forest and fertilized agricultural soils may be important in determining methane levels in rivers. Methane concentrations in well‐flushed estuaries appear to be controlled mainly by mixing between high CH4‐containing river water and low CH4‐containing seawater endmembers. Rivers and estuaries were found to be sources of methane to the atmosphere. Calculated daily fluxes to the atmosphere ranged from 1.2 to 71 mg CH4 m−2 for rivers and from 0.04 to 21 mg CH4 m−2 for estuarine samples.

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“…5 Another set of measurements obtained previously in the same area results in methane concentrations of 1.24 ± 0.03 ppm. 6 Methane concentrations in samples collected in suburban and rural areas around Cincinnati, Ohio, ranged from 1.38 to 1.44 ppm. 7 Based on these results, the background surface methane concentration should be within the range 1.3 ±0.1 ppm.…”

Section: Resultsmentioning

confidence: 99%