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Survey of isotope ratios in the near coastal outflow of the Columbia River Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_projects/rj430b71q

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  • This report details ocean water salinity and stable isotope measurements (deuterium (D) and 18O) in water collected from April 17 2018 to April 21 2018 in the coastal waters of Oregon, USA. Measurements were made from surface, ship flow-through, and CTD rosette bottle samples collected as part of a student-led research cruise. The research cruise sought to explore sea-surface evaporation dynamics and regional hydrologic budgets in the Columbia River mixing zone through ship-board field observations of stable isotopes in sea water and water vapor. Ocean-water samples were collected to estimate the amount of water mass mixing and provide a spatial distribution of surface isotopic composition to compare with the vapor measurements. Sea water samples were analyzed post-cruise at Oregon State University laboratory facilities. Here we examine d18O-salinity and d18O-𝛿D (deuterium excess) relationships observed from water samples collected in the Columbia River mixing zone.
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