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Origin of methane and sources of high concentrations in Los Angeles groundwater

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Kulongoski, J.T., McMahon, P.B., Land, M., Wright, M.T., Johnson, T.A., & Landon, M.K. (2018). Origin of methane and sources of high concentrations in Los Angeles groundwater. Journal of Geophysical Research: Biogeosciences, v. 123, no. 3, p. 818-831. https://doi.org/10.1002/2017JG004026. [Accepted article online 12 FEB 2018]

Summary

In 2014, samples from 37 monitoring wells at 17 locations, within or near oil fields, and one site >5 km from oil fields, in the Los Angeles Basin, California, were analyzed for dissolved hydrocarbon gas isotopes and abundances. The wells sample a variety of depths of an aquifer system composed of unconsolidated and semiconsolidated sediments under various conditions of confinement. Concentrations of methane in groundwater samples ranged from 0.002 to 150 mg/L—some of the highest concentrations reported in a densely populated urban area. The δ13C and δ2H of the methane ranged from −80.8 to −45.5 per mil (‰) and −249.8 to −134.9‰, respectively, and, along with oxidation‐reduction processes, helped to identify the origin of methane as [...]

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Type Scheme Key
local-index unknown 70197806
local-pk unknown 70197806
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1002/2017JG004026
series unknown Journal of Geophysical Research: Biogeosciences

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citationTypeArticle
journalJournal of Geophysical Research: Biogeosciences
languageEnglish
parts
typevolume
value123
typeissue
value3

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