Search results: “McMahon”

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  • Regional patterns in the geochemistry of oil-field water, southern San Joaquin Valley, California, USA

    Regional patterns in the geochemistry of oil-field water, southern San Joaquin Valley, California, USA

    Applied Geochemistry, Elsevier | September 21, 2018...
    Summary

    Chemical and isotopic data for water co-extracted with hydrocarbons in oil and gasfields are commonly used toexamine the source of the formation water...

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  • Multiple-Well Monitoring Site Adjacent to the Lost Hills Oil Field, Kern County, California

    Multiple-Well Monitoring Site Adjacent to the Lost Hills Oil Field, Kern County, California

    U.S. Geological Survey (USGS) | February 20, 2020...
    Summary

    The U.S. Geological Survey (USGS), in cooperation with the California State Water Resources Control Board, is evaluating several questions about oil and gas...

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  • Occurrence and sources of radium in groundwater associated with oil fields in the southern San Joaquin Valley, California

    Occurrence and sources of radium in groundwater associated with oil fields in the southern San Joaquin Valley, California

    American Chemical Society (ACS) | August 7, 2019...
    Summary

    Geochemical data from 40 water wells were used to examine the occurrence and sources of radium (Ra) in groundwater associated with three oil...

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  • Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley

    Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley

    National Academy of Sciences | June 12, 2012...
    Summary

    Aquifer overexploitation could significantly impact crop production in the United States because 60% of irrigation relies on groundwater. Groundwater depletion in the irrigated...

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  • Methane emissions from groundwater pumping in the USA

    Methane emissions from groundwater pumping in the USA

    Nature Partner Journals (NPJ), Climate and Atmospheric Science | March 25, 2019...
    Summary

    Atmospheric methane accumulation contributes to climate change, hence quantifying methane emissions is essential to assess and model the impacts. Here, we estimate methane emissions...

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

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

    Biogeosciences, American Geophysical Union | February 12, 2018...
    Summary

    High dissolved methane gas concentrations were measured in 37 groundwater samples collected in the Los Angeles Basin, California. The origin of the methane...

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