Mapping aquifer salinity gradients and effects of oil field produced water disposal using geophysical logs: Elk Hills, Buena Vista and Coles Levee Oil Fields, San Joaquin Valley, California

• Janice M. Gillespie ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing – original draft

  * E-mail: jmgillespie@usgs.gov

  Affiliation U.S. Geological Survey, San Diego, California, United States of America

  https://orcid.org/0000-0003-1667-3472

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• Michael J. Stephens,

  Roles Data curation, Formal analysis, Investigation, Methodology, Software, Writing – review & editing

  Affiliation U.S. Geological Survey, California Water Science Center, Sacramento, California, United States of America

  https://orcid.org/0000-0001-8995-9928

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• Will Chang,

  Roles Investigation, Methodology, Software

  Affiliation Hypergradient LLC, Berkeley, California, United States of America

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• John G. Warden

  Roles Data curation, Formal analysis, Investigation, Methodology, Writing – review & editing

  Affiliation U.S. Geological Survey, San Diego, California, United States of America

  https://orcid.org/0000-0003-1384-458X

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