Search Constraints

Start Over
Filtering by: Has journal Nonlinear Processes in Geophysics Remove constraint Has journal: Nonlinear Processes in Geophysics Advisor Cox, Daniel T. Remove constraint Advisor: Cox, Daniel T.

Search Results

  • Probabilistic Tsunami Hazard and Damage Assessment of the Built Environment : Applied at Seaside, Oregon

    Creator:
    Park, Hyoungsu
    Abstract:
    Damage estimates to the built environment from tsunamis are important for disaster mitigation, including planning emergency response and recovery. This dissertation evaluates the damage states of buildings in a small urban coastal city, Seaside, Oregon, from tsunami hazards generated by a Cascadia Subduction Zone (CSZ) event. This study is separated...
    Resource Type:
    Dissertation
    Full Text:
    characterization of the built environment. These processes are important in determining the probability of

  • Tsunami inundation : estimating damage and predicting flow properties

    Creator:
    Wiebe, Dane Michael
    Abstract:
    The 2004 Indian Ocean and 2011 Tohoku tsunami events have shown the destructive power of tsunami inundation to the constructed environment in addition to the tragic loss of life. A comparable event is expected for the Cascadia Subduction Zone (CSZ) which will impact the west coast of North America. Research...
    Resource Type:
    Masters Thesis
    Full Text:
    Wiebe for the degree of Master of Science in Civil Engineering presented on March 22, 2013. Title

  • Observations and prediction of intermittent sediment suspension in the surf zone

    Creator:
    Yoon, Hyun Doug
    Abstract:
    In this dissertation the interactions between hydrodynamics, sediment suspension and transport, and morphological evolution in the surf zone was investigated with a large-scale laboratory experiment data, CROss-Shore Sediment Transport Experiment (CROSSTEX). The data set included comprehensive measurements of water surface elevation, fluid velocity, sediment concentration, and morphology for irregular waves...
    Resource Type:
    Dissertation
    Full Text:
    breaking turbulence is an important factor for near-bed processes in nearshore environments. However, in

  • Effects of Wave Nonlinearity and Vertical Variation of Vegetation Density on Wave Attenuation

    Creator:
    Wu, Wei-Cheng
    Abstract:
    The understanding and prediction how coastal wetland vegetation attenuates wave action has received renewed attention with global climate change impacts and increasing populations on coastlines. Conventional attenuation models utilize empirical drag coefficients, but these coefficients exhibit a wide range of values, and there is some uncertainty in the relative importance...
    Resource Type:
    Dissertation
    Full Text:
    damping, we might expect that nonlinear wave-wave interaction processes may play an important role in

  • Laboratory observations and numerical modeling of inner surf and swash zone hydrodynamics on a steep slope

    Creator:
    Shin, Sungwon
    Abstract:
    Laboratory data of free surface elevations and fluid velocities were obtained using a laser-Doppler velocimeter for the case of a periodic wave plunging over an impermeable, steep (1:10) slope with a fixed bottom roughness. The measurements were conducted over 15 cross-shore locations from the outer surf zone to the swash...
    Resource Type:
    Dissertation
    Full Text:
    sharp vertical gradient in (u) indicating that boundary layer processes may have been important. In the

  • Describing Tsunami Inundation and Debris Motion using Optical Measurement Methods in a Large-Scale Wave Basin

    Creator:
    Rueben, Matthew Robert
    Abstract:
    This thesis consists of two papers in manuscript format. The first paper presents optical measurements of tsunami inundation through an urban waterfront in a laboratory wave basin. The physical model was constructed at 1:50 scale and was an idealization of the town of Seaside, Oregon. The paper presents an analysis...
    Resource Type:
    Honors College Thesis
    Full Text:
    macro-roughness features on the tsunami inundation processes in laboratory settings. The second paper

  • Large-scale laboratory observations of wave breaking turbulence on a fixed barred beach

    Creator:
    Scott, Christopher P.
    Abstract:
    This thesis presents the details of a large-scale laboratory experiment to study the turbulence generated by waves breaking on a fixed barred beach. The data set includes comprehensive measurements of free surface displacement and fluid velocity for one random and one regular wave case. Observations of the time-averaged turbulent kinetic...
    Resource Type:
    Masters Thesis
    Full Text:
    sediment transport and the difficulty in obtaining detailed measurements of nearshore processes within

  • Experimental and numerical modeling of wave height attenuation by emergent coastal vegetation

    Creator:
    Blackmar, Philip James
    Abstract:
    Coastal vegetation dampens waves which can provide benefits to the local area, but existing literature shows large variations in the degree of wave height attenuation depending on plant properties and wave conditions. Better knowledge of how to predict the wave height decay accurately in different types of vegetation may help...
    Resource Type:
    Masters Thesis
    Full Text:
    nonlinear effects in this process, but the scatter in the fitted data makes it difficult to determine

  • Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach

    Creator:
    Darnell, Joel T.
    Abstract:
    In the northwestern Gulf of Mexico there is a need for reliable water level forecasts to facilitate safe commercial navigation, marine construction, and emergency management. Though the low amplitude tides of the region can be predicted with conventional harmonic techniques, frequent strong storms make accurate forecasts of water levels difficult....
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Ocean Engineering in Ocean Engineering presented on July 6, 2004. Title: Nowcast/Forecast of

  • Performance-Based Design Methodology for Using Emergent Vegetation to Mitigate Wave Overtopping

    Creator:
    Ostrow, Kayla
    Abstract:
    To facilitate the design of Natural and Nature-Based Features (NNBF) for flood protection, this thesis expands an existing engineering design methodology to NNBF systems. The existing approach is a Level III reliability method for the performance-based design of traditional coastal engineering systems. The expanded methodology incorporates uncertainties inherent to both...
    Resource Type:
    Masters Thesis
    Full Text:
    for the degree of Master of Science in Civil Engineering presented on July 21, 2023. Title