Index Catalog // ScholarsArchive@OSU

Weather and large waves along the Oregon coast: atmospheric controls on a numerical wave model

Creator:: Ellenson, Ashley N.
Abstract:: In this study, the effects of implementing different wind input or physics packages in a numerical wave model to recreate large wave conditions are explored. Three large wave events are simulated with WaveWatch III. The wind inputs which are compared are NCEP's Global Forecasting System (GFS) with 0.5 degree resolution...
Resource Type:: Masters Thesis
Full Text:: repercussion of the directional distribution function implemented by NDBC in the 2-D wave spectra analysis

Wave-by-wave Forecasting of Sea Surface Elevation for WEC Applications Utilizing NARX Neural Networks

Creator:: Gillespie, Alice
Abstract:: Forecasting of ocean waves over a short duration on the order of tens of seconds was approached with the optimization of wave energy conversion in mind. This study outlines the development of an artificial neural network model, specifically the Nonlinear Autoregressive Network with Exogenous Input (NARX), to predict a wave-by-wave...
Resource Type:: Masters Thesis
Full Text:: like to extend a round of thanks to committee members Dr. Istok, Dr. Batten, and Dr. Sharp for

Unmanned aircraft systems for bridge inspection : testing and developing end-to-end operational workflow

Creator:: Gillins, Matthew N.
Abstract:: Bridge inspections are vital for monitoring the health and serviceability of transportation infrastructure throughout the world. However, inspections can be logistically-challenging, expensive, and dangerous. For example, inspections may require climbing, as well as the use of scaffolding, ladders, rescue boats, bucket trucks, and/or under-bridge inspection vehicles. Small, multirotor unmanned aircraft...
Resource Type:: Masters Thesis
Full Text:: Oregon State University, Farid Javadnedjad, Chase Simpson, and Jonathan Burnett for their assistance in

Tidal range changes in the Delaware Bay : past conditions and future scenarios

Creator:: Hall, George F.
Abstract:: Throughout the Holocene, appreciable changes in bathymetry are hypothesized to have resulted in large changes to tidal datums in coastal and estuarine areas. An understanding of tidal change is an important contribution to the knowledge of relative historical sea-level change and future coastal planning. To test this hypothesis, the Advanced...
Resource Type:: Masters Thesis

The Art of Reducing Coastal Hazard Complexity: Coupling Physics and Probability to Understand Extremes, Variability, and Climate-dependence

Creator:: Anderson, Dylan L.
Abstract:: Coastal hazards are the result of numerous physical processes cumulatively causing water levels to flood and erode the land. The waves, storm surges, tides, and run-off contributing to elevated water levels are each the product of chaotic and random weather patterns. These stochastic weather patterns dissipate energy in Earth's climate...
Resource Type:: Dissertation
Full Text:: . Jonathan Allen provided seasonal survey data for model comparisons in Chapter 4. Ryan Mieras contributed

Stability of heterogeneous and anisotropic slopes determined by the compound logarithmic spiral limit equilibrium method

Creator:: Stockton, Ezra J.
Abstract:: The logarithmic-spiral (log-spiral) limit equilibrium procedure for slope stability analysis rigorously satisfies both force and moment equilibrium with a failure surface geometry formulated as a function of the soil’s angle of internal friction. Within the framework of limit equilibrium, this procedure has, in the past, been primarily limited to homogeneous...
Resource Type:: Masters Thesis
Full Text:: Janzen, Jonathan Alfson, and Jithin Nair for their encouragement. TABLE OF CONTENTS Page

Shear strengthening reinforced concrete bridge girders using near-surface mounted titanium alloy bars

Creator:: Knudtsen, Jonathan
Abstract:: Aging and deficient infrastructure has become a major problem throughout the world. This is particularly evident in the case of reinforced concrete (RC) bridges. The cost of replacing these bridges is often prohibitive, thus engineers must find ways to strengthen them. Many older RC bridges predate the modern understanding of...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jonathan Knudtsen for

Roughness and geometry effects of engineered log jams on 1-D flow characteristics

Creator:: Valverde, Rachelle S.
Abstract:: The re-introduction of large woody debris (LWD) into streams and rivers for stream restoration purposes is rapidly growing. Engineered log jams (ELJs) are man-made structures intended to mimic natural LWD structures, designed and installed to protect stream banks from erosion while increasing habitat diversity. Several studies have evaluated the flow...
Resource Type:: Masters Thesis
Full Text:: Roughness and Geometry Effects of Engineered Log Jams on 1-D

Remote Sensing Tools for Evaluating Climate Change Impacts in Coastal Environments

Creator:: Herrmann, Joan F.
Abstract:: Climate change has pervasive impacts on Earth’s diverse ecosystems. Observed and projected effects that impact coastal environments pose unique challenges. Coastal regions provide numerous ecosystem services (e.g., fisheries, nursery habitats, erosion control, and water filtering and detoxification), house 40% of the US population, and contribute to 58% of the national...
Resource Type:: Masters Thesis
Full Text:: Geographic Information Systems (GIS) related content. Lastly, Jonathan Allan from Oregon Department of

Reliability-based Serviceability Limit State Design Procedures for Shallow Foundations

Creator:: Huffman, Jonathan C.
Abstract:: Reliability-based geotechnical foundation design focusses on soil and structure analysis that meets necessary safety, performance and/or serviceability criteria, calibrated based on probabilistic analyses and an accepted level of risk. As the civil engineering community seeks to better harmonize geotechnical and structural design methodologies, reliability-based design is being incorporated more into...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Jonathan C. Huffman for the degree of Doctor of Philosophy in Civil

ScholarsArchive@OSU

Weather and large waves along the Oregon coast: atmospheric controls on a numerical wave model

Wave-by-wave Forecasting of Sea Surface Elevation for WEC Applications Utilizing NARX Neural Networks

Unmanned aircraft systems for bridge inspection : testing and developing end-to-end operational workflow

Tidal range changes in the Delaware Bay : past conditions and future scenarios

The Art of Reducing Coastal Hazard Complexity: Coupling Physics and Probability to Understand Extremes, Variability, and Climate-dependence

Stability of heterogeneous and anisotropic slopes determined by the compound logarithmic spiral limit equilibrium method

Shear strengthening reinforced concrete bridge girders using near-surface mounted titanium alloy bars

Roughness and geometry effects of engineered log jams on 1-D flow characteristics

Remote Sensing Tools for Evaluating Climate Change Impacts in Coastal Environments

Reliability-based Serviceability Limit State Design Procedures for Shallow Foundations

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