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  • Oogenesis in Mytilus californianus

    Creator:
    Elvin, David Winter
    Abstract:
    A two-year field study was made of a population of the California Sea Mussel, Mytilus californianus, located on a protected tidal bench at Yaquina Head on the Central Oregon Coast. This animal was chosen because it is attached to the rocks, filters particulate matter from the water, produces large amounts...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF DAVID WINTER ELVIN for the DOCTOR

  • The fluvial response to glacial-interglacial climate change in the Pacific Northwest, USA

    Creator:
    VanLaningham, Sam J.
    Abstract:
    This research focuses on the development of new techniques to explore terrestrial-ocean climate linkages along the Pacific Northwest-northeast Pacific Ocean margin. This is done by investigating river response to climate change and by unraveling this history preserved in continental margin sediments. A significant component of this work centers on developing...
    Resource Type:
    Dissertation
    Full Text:
    June 8, 2007. Title: The Fluvial Response to Glacial-Interglacial Climate Change in the Pacific

  • Surface wind modification near mid-latitude ocean fronts : observational and dynamical analysis

    Creator:
    O'Neill, Larry W.
    Abstract:
    Interactions between surface winds and meanders in mid-latitude sea surface temperature (SST) fronts with horizontal length scales of 100-1000 km are investigated from satellite observations and numerical simulations. Observations from the Sea- Winds scatterometer on the QuikSCAT satellite show that the magnitude, direction, curl, and divergence of the surface wind...
    Resource Type:
    Dissertation
    Full Text:
    Larry W. O’Neill for the degree of Doctor of Philosophy in Oceanography presented on August 16, 2007

  • Remote measurements of waves and currents over complex bathymetry

    Creator:
    Chickadel, Carmine C. (Carmine Christopher)
    Abstract:
    Waves are the primary input of energy in the nearshore region, and together with the currents forced through the transfer of momentum that occurs during the wave breaking process they are the principal mechanism for sediment transport in the nearshore. The basic physics of waves and currents are thought to...
    Resource Type:
    Dissertation
    Full Text:
    . Chickadel for the degree of Doctor of Philosophy in Oceanography presented on September 7, 2007. Title

  • Inner-shelf circulation off the central Oregon Coast

    Creator:
    Kirincich, Anthony R.
    Abstract:
    Inner-shelf circulation and mechanisms of across-shelf transport of water masses were examined using seven years of observations collected by the Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO) program, a long-term monitoring effort along the central Oregon coast. Since 1998, moored velocity and hydrographic measurements have been obtained during the...
    Resource Type:
    Dissertation
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    degree of Doctor of Philosophy in Oceanography presented on May 24, 2007. Title: Inner-shelf

  • Geochemical and helium isotopic variability within the Lau Basin

    Creator:
    Goddard, Charlotte Ives
    Abstract:
    This research incorporates geochemical and helium isotopic analyses of Lau Basin volcanic glasses, along with helium isotopic analyses of water column hydrothermal plumes to better understand the processes that control the formation and evolution of this backarc basin. Lavas newly collected from the four southernmost segments of the Valu Fa...
    Resource Type:
    Dissertation
    Full Text:
    the degree of Doctor of Philosophy in Oceanography presented on December 17, 2007. Title: Geochemical

  • Mantle melting and heterogeneity along mid-ocean ridges : insight from basalt geochemistry along axial depth and morphologic gradients for intermediate spreading rate systems

    Creator:
    Russo, Christopher J.
    Abstract:
    This investigation focuses on gaining a better understanding of the complex relationship between melt generation, source variability and mid-ocean ridge morphology. The approach adopted here uses a variety of geochemical techniques to evaluate the ability of 'global' models to predict regional scale geochemical variability associated with axial depth and axial...
    Resource Type:
    Dissertation
    Full Text:
    June 15, 2007. Title: Mantle Melting and Heterogeneity along Mid-ocean Ridges: Insights from Basalt

  • The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

    Creator:
    Mazzini, Piero Luigi Fernandes
    Abstract:
    Freshwater provided from river discharge influences the dynamics and circulation of most continental shelves around the world. It has profound effects on the transport and fate of materials and substances originated from rivers and estuaries, as well as on the ocean biogeochemistry and marine ecosystems. The effect of buoyancy forcing...
    Resource Type:
    Dissertation
    Full Text:
    during Fall-Winter of 2006-2007 . . . . . . . . . . . . . 58 3.4.3 Remote Forcing of the CRP

  • Distribution of Euphausiacea and Copepoda off Oregon in relation to oceanographic conditions

    Creator:
    Hebard, James Frank
    Abstract:
    Fifty-two one-meter plankton net samples from four stations off Newport, Oregon, were examined for composition and abundance of euphausiids and copepods. They provided data on dominance, species associations and environmental relationships. The euphausiid-copepod population off Oregon is composed of 12 numerically dominant species. These species occurred in most of the...
    Resource Type:
    Dissertation
    Full Text:
    Ph. D. in OCEANOGRAPHY (Name) (Degree) (Major) Date thesis is presented May 13, 1966 Title

  • Geochemical cycling in a Pacific Northwest estuary (Tillamook Bay, Oregon, USA)

    Creator:
    Colbert, Debbie L.
    Abstract:
    This thesis investigates the behavior of major inorganic nutrients (P, N, Si), trace metals (Mn, Fe), and alkaline-earth metals (Ba) within Tillamook Bay over seasonal cycles and under a range of river discharge conditions from October 1997 through December 1999. Located in the Pacific Northwest region, Tillamook Bay is an...
    Resource Type:
    Dissertation
    Full Text:
    discharge from winter to summer due primarily to changes in precipitation. Additionally, the oceanography