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Filtering by: Creator Garcia, Peter Anthony Remove constraint Creator: Garcia, Peter Anthony Academic Affiliation College of Earth, Ocean, and Atmospheric Sciences Remove constraint Academic Affiliation: College of Earth, Ocean, and Atmospheric Sciences

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  • Timescales and tectonics of oceanic plateaus : long-term evolution of Ontong Java Nui and Rio Grande Rise

    Creator:
    Davidson, Peter C.
    Abstract:
    Oceanic plateaus are regions of overthickened oceanic crust and are often thought to form from the interaction of mantle plumes with oceanic lithosphere. These regions can cover vast areas of the ocean basins and represent a highly elevated magmatic flux relative to normal mid-ocean ridge spreading. Oceanic plateaus are considered...
    Resource Type:
    Dissertation
    Full Text:
    and Osbourn Basins and Ontong Java Nui Breakup Kinematics Peter C. Davidson1, Anthony A.P

  • On the Volcanic and Geodynamic Evolution of the Shatsky Rise and the Louisville Seamount

    Creator:
    Heaton, Daniel E.
    Abstract:
    Large igneous provinces (LIPs) and intraplate seamounts reflect of anomalous mantle melting and illuminate interior processes of the Earth. These features are in all ocean basins and show the mantle’s evolution over time, then can provide information on plate tectonic processes, such as plate motion over time, spreading ridge formation,...
    Resource Type:
    Dissertation
    Full Text:
    Anthony A. P. Koppers Large igneous provinces (LIPs) and intraplate seamounts reflect of anomalous

  • From the Shoreface to the Foredunes : Coastal Morphodynamics Across the Land-Sea Interface

    Creator:
    Cohn, Nicholas T.
    Abstract:
    Coastal flooding and erosion are major concerns for low lying coastal communities -- particularly in light of accelerated sea level rise and climate change. To improve quantitative understanding of the physical drivers of both flooding and coastal landscape change, this dissertation explores coastal morphodynamics bridging the land-sea interface on modally...
    Resource Type:
    Dissertation
    Date Created:
    Full Text:
    to the Foredunes: Coastal Morphodynamics Across the Land-Sea Interface Abstract approved: Peter

  • Application of Cosmogenic Nuclides and Argon Geochronology to Paleoclimate, Paleomagnetism, and Paleohydrology

    Creator:
    Balbas, Andrea M.
    Abstract:
    This dissertation uses argon geochronology and cosmogenic nuclide surface exposure dating methods to address three research questions. The first question concerns a geomagnetic instability recorded in lava flows on the island of Floreana in the Galapagos Archipelago. Changes in the Earth’s magnetic field (intensity and orientation) occur frequently throughout geologic...
    Resource Type:
    Dissertation
    Full Text:
    Paleohydrology Abstract approved: _____________________________________________________ Peter U

  • New Insights into Mantle Dynamics from Helium Isotopes and Argon Geochronology

    Creator:
    Konrad, Kevin
    Abstract:
    Earth’s mantle extends to nearly 3000 km depth, comprises >80 % of Earth’s total volume, and has the largest influence on the primordial and radiogenic heat budget. Despite its importance, the structure and composition of the mantle is still debated. There are three primary models for Earth’s mantle structure that...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________ David W. Graham Anthony A.P. Koppers Earth’s mantle extends to nearly 3000 km

  • Spatial and Temporal Dynamics of Broad-scale Predictive Models : Influences of Scale

    Creator:
    Hooper, Samuel
    Abstract:
    Developing accurate predictive distribution models requires adequately representing relevant spatial and temporal scales, as these scales are ultimately reflective of the relationships between distributions and influential environmental conditions. In this research, we considered both spatial and temporal scale and the influence each has on predicting broad-scale distributions of two disparate...
    Resource Type:
    Masters Thesis
    Full Text:
    graduate committee representative, Tiffany Garcia. Julia Jones, while not directly involved with this

  • Regional scale sandbar variability : observations from the U.S. Pacific Northwest

    Creator:
    Di Leonardo, Diana R.
    Abstract:
    Understanding sandbar dynamics and variability is integral to developing a predictive capacity for nearshore flows, sediment transport, morphological change, and ultimately for determining coastline exposure to damaging storm waves. Along the high-energy U.S. Pacific Northwest (PNW) coast, sandbars typically dominate the bathymetry of the active zone. Here we report on...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Peter Ruggiero Understanding sandbar dynamics and variability is integral to developing

  • Simulating extreme total water levels using a time-dependent, extreme value approach

    Creator:
    Serafin, Katherine A.
    Abstract:
    Coastal flood hazard zones and the design of coastal defenses are often devised using either the maximum recorded total water level (TWL) or a 'design' event such as the 100-year return-level flood, usually projected from observed extreme events. Despite technological advances driving more consistent instrumental records of wave heights and...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Peter Ruggiero Coastal flood hazard zones and the design of coastal defenses are often

  • Quantifying dune ecomorphodynamics using UAV-based structure from motion photogrammetry

    Creator:
    Edgell, Rebecca
    Abstract:
    Oregon’s foredunes are part of a dynamic coastal environment that constantly evolves in response to both ecological and physical forces. Invasive beachgrasses have outcompeted native dune grass in the region and have influenced the shape of Oregon’s foredunes via species-specific biophysical feedback mechanisms. As climate change induced sea-level rise will...
    Resource Type:
    Masters Thesis
    Full Text:
    Photogrammetry. Abstract approved: ______________________________________________________ Peter

  • Hydrodynamic and Morphologic Controls on Extreme Coastal Total Water Levels Across Regional and Local Scales

    Creator:
    Serafin, Katherine A.
    Abstract:
    Coastal and estuarine flooding and erosion events are usually driven by the cumulative effect of multiple individual processes like waves, streamflow, storm surge, and/or tides. This dissertation focuses on separating the influence of the regional and local-scale geomorphologic and hydrodynamic processes driving variability in the magnitude and impacts of extreme...
    Resource Type:
    Dissertation
    Full Text:
    Regional and Local Scales Abstract approved: Peter Ruggiero Coastal and estuarine flooding and erosion