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Filtering by: Subject Columbia River Remove constraint Subject: Columbia River Academic Affiliation Oceanography Remove constraint Academic Affiliation: Oceanography Degree Level Doctoral Remove constraint Degree Level: Doctoral

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  • The Columbia River as a source of marine light scattering particles

    Creator:
    Pak, Hasong
    Abstract:
    The Columbia River plume region was investigated during the period of 20 June to 3 July, 1968 by light scattering measurements and standard hydrographic station observations. The Columbia River plume was traced by the light scattering particles of the plume water. The light scattering particles are estimated to be contained...
    Resource Type:
    Dissertation
    Full Text:
    OF PHILOSOPHY (Degree) in OCEANOGRAPHY presented on July 14, 1969 (Major) Title: THE COLUMBIA RIVER

  • Chromium-51 in the Columbia River and adjacent Pacific Ocean

    Creator:
    Cutshall, N. H.
    Abstract:
    Radioactive chromium-51, a waste byproduct from operation of nuclear reactors at Hanford, Washington, has been followed down the Columbia River and into the Pacific Ocean. Chemical factors influencing the partitioning of ⁵¹Cr between solution and sediment have been considered. Chromium-5l, in a hexavalent oxyanion when introduced into the Columbia River,...
    Resource Type:
    Dissertation
    Full Text:
    CHROMIUM-5l IN THE COLUMBIA RIVER AND ADJACENT PACIFIC OCEAN Abstract approved (Major professor

  • Dispersion of the Columbia River plume based on radioactivity measurements

    Creator:
    Frederick, Lawrence Churchill
    Abstract:
    An investigation has been made of several physical parameters of the effluent plume of the Columbia River as it enters the Pacific Ocean. Radioactive material in trace amounts enters the Columbia River from the Hanford nuclear reactors at Richland, Washington. One of these nuclides, chromium -51, has been used to...
    Resource Type:
    Dissertation
    Full Text:
    ) Title: . DISPERSION OF THE COLUMBIA RIVER PLUME BASED ON RADIOACTIVITY MEASUREMENTS Abstract approved

  • A calculation of flushing times and pollution distribution for the Columbia River estuary

    Creator:
    Neal, Victor Thomas
    Abstract:
    The probable pollution distribution and flushing times have been calculated for the Columbia River Estuary, a coastal plain estuary. The pollution distribution was determined by the fresh water fraction and by the diffusion equation. The flushing times were calculated by the modified tidal prism method and by the fraction of...
    Resource Type:
    Dissertation
    Full Text:
    OF FLUSHING TIMES AND POLLUTION DISTRIBUTION FOR THE COLUMBIA RIVER ESTUARY Abstract approved

  • Radioecology of ⁶⁵Zn in an arm of the Columbia River Estuary

    Creator:
    Renfro, William Charles
    Abstract:
    Levels of ⁶⁵Zn in water, sediments, plants, and animals in Alder Slough, a small ecosystem in the Columbia River Estuary, were determined periodically during a one year period. Concentrations of total Zn in organisms were also measured to permit computation of specific activities (μCi⁶⁵Zn/g total Zn). Temporal fluctuations in the...
    Resource Type:
    Dissertation
    Full Text:
    : Radioecology of 65Zn in an Arm of the Columbia River Es tua Abstract approved: Charles L. Osterberg

  • Plankton and nutrient ecology of the Columbia River estuary

    Creator:
    Haertel, Lois Steben
    Abstract:
    Monthly samples of nutrients, phytoplankton and zooplankton were taken in the Columbia River estuary over a period of 16 months in order to determine distribution with season and salinity, and interrelationships between plankton and nutrients. Nitrate and phosphate levels in the river water entering the estuary are high in the...
    Resource Type:
    Dissertation
    Full Text:
    : PLANKTON AND NUTRIENT ECOLOGY OF THE COLUMBIA RIVER ESTUARY Abstract approved: Charles Osterberg Monthly