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  • Insights into Centennial-Scale Salt Marsh Morphodynamics from the Oregon Coast

    Creator:
    Peck, Erin K.
    Abstract:
    Quantification and comparison of morphological changes over the last ~300 y in Oregon salt marshes provide valuable insights into the tectonic, hydroclimatic, and anthropogenic processes shaping this important intertidal zone. Understanding of the rates and drivers of salt marsh change contextualizes intertidal habitats within the sediment routing system (i.e., source...
    Resource Type:
    Dissertation
    Full Text:
    Coast. Abstract approved: ______________________________________________________ Robert A

  • Competing Roles of Sea Level Rise and Sediment Supply on Sediment Accretion and Carbon Burial in Tidal Wetlands; Northern Oregon, USA

    Creator:
    Peck, Erin K.
    Abstract:
    Quantification of contemporary sediment and carbon accumulation within Oregon tidal saline wetlands will: (1) fill a critical knowledge gap, and (2) naturally test without complicating variables whether sea level rise or sediment supply primarily control wetland growth. Here we measure vertical accretion rates and carbon burial rates in three Oregon...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Robert A. Wheatcroft Quantification of contemporary sediment and carbon accumulation

  • A petrogenetic model for the Caribbean large igneous province

    Creator:
    Krawl, Kyle A.
    Abstract:
    The Caribbean Plateau is an oceanic large igneous province (CLIP). A widely accepted model for LIP petrogenesis proposes that these large bodies of igneous rock are formed by decompression melting associated with upwelling mantle plume heads during the initiation of hotspot activity. According to this classical model, petrogenesis occurs over...
    Resource Type:
    Masters Thesis
    Full Text:
    : _________________________________________________________ Robert A. Duncan Adam J. R. Kent The Caribbean

  • A Geochemical Model for the Petrogenesis of the Curaçao Lava Formation: Implications for the Origin of the Caribbean Plateau

    Creator:
    Krawl, Kyle A.
    Abstract:
    The Curaçao Lava Formation (CLF) records the magmatic and tectonic processes that formed the Caribbean Large Igneous Province (CLIP). A model of the petrogenesis of the CLF was developed using new geochemical and geochronological data. These data include major element compositions obtained using X-ray fluorescence spectroscopy (XRF), trace element concentrations...
    Resource Type:
    Honors College Thesis
    Full Text:
    Robert A. Duncan The Curaçao Lava Formation (CLF) records the magmatic and tectonic processes that

  • Geometric and wall pressure characterization of patient abdominal aortic aneurysm

    Creator:
    Aslani, Elham
    Abstract:
    In this study, we have characterized a series of patient Abdominal Aortic Aneurysms (AAAs) based on their geometric parameters, wall pressure distributions and ages. Abdominal aortic aneurysms (AAAs) are localized aortic dilations that have been estimated to occur in 5 to 7 percent of the U.S. population over age 60....
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Robert A. Peattie In this study, we have characterized a series of patient Abdominal Aortic

  • The light within us : Quaker women in science

    Creator:
    McCabe, Leslie N.
    Abstract:
    This thesis explores the role of Quaker women in science in an attempt to arrive at some understanding of what motivated Quaker women in nineteenth century America to go into the sciences. George Fox founded the Society of Friends in the mid-seventeenth century in England and the Quaker theology centered...
    Resource Type:
    Masters Thesis
    Full Text:
    in Science. Abstract approved: Robe?t A. tye This thesis explores the role of Quaker women in

  • Identical confusion : the history of twin studies on sexual orientation, 1952-1973

    Creator:
    Boltseridge, Nathan H.
    Abstract:
    In 1952, at the height of the McCarthy era, Franz Kallmann, a Jewish psychiatrist and eugenicist who fled the National Socialist regime in Germany, published a study, in which he claimed to have found a one hundred percent concordance rate for homosexuality among forty pairs of identical twins. From this...
    Resource Type:
    Masters Thesis
    Full Text:
    . I wish to thank my advisor, Robert A. Nye for challenging me to constantly perform at the top of my

  • Using An Array of NE Pacific Margin Sediment Samples to Link Land and Ocean Responses to Glacial-Interglacial Climate Variability

    Creator:
    Wilson, Kiya L.
    Abstract:
    Variability in the terrigenous (land-derived) fraction of marine sediments, including pollen and rock fragments, reflects the effects of regional climate change on continentally derived runoff, ice extent, vegetation and ocean circulation. The transport of this continental material to the seafloor must be understood in order to interpret the terrigenous sediment...
    Resource Type:
    Honors College Thesis
    Full Text:
    Glacial-Interglacial Climate Variability. Abstract approved: Robert A

  • Quantitative analysis of nearshore morphological variability based on video imaging

    Creator:
    Alexander, Patricia Soupy
    Abstract:
    In the past, classification systems for the analysis of morphodynamic variability have been developed in an attempt to understand large scale coastal behavior. The motivation behind the creation of these classification systems has been to provide a framework of analysis, in order to understand large scale response to seasonal variability,...
    Resource Type:
    Masters Thesis
    Full Text:
    of Nearshore Morphological Variability Based on Video Imaging. Abstract Approved: Robert A. Holman

  • A seasonal study of sediment reworking by Neotrypaea californiensis in Yaquina Bay, Oregon

    Creator:
    Fritz, Cara E.
    Abstract:
    A year-long field study was undertaken to investigate the influence of a number of physical and biological factors, specifically temperature, organic carbon content, and shrimp population dynamics on sediment reworking rates by the ghost shrimp Neotrypaea calforniensis. Because of its role as a structuring agent in estuaries along the West...
    Resource Type:
    Masters Thesis
    Full Text:
    approved -----L-------------t--- Robert A. Wheatcroft A year-long field study was undertaken to