Search Constraints

Start Over
Filtering by: Has journal Nonlinear Processes in Geophysics Remove constraint Has journal: Nonlinear Processes in Geophysics Subject Ocean waves Remove constraint Subject: Ocean waves

Search Results

  • A laboratory experiment on sand bar migration with comparisons to recent models

    Creator:
    Magalen, Jason
    Abstract:
    Successful prediction of nearshore sediment migration is important in determining the vulnerability of a coastline. During energetic wave climates (storm events) sediment rapidly erodes from beaches and is deposited offshore. In subsequent milder wave conditions, the sediment migrates shoreward, accreting on the beach and helping to protect the coastline. It...
    Resource Type:
    Masters Thesis
    Full Text:
    migration, though, has not been modeled with a large amount of success, in part because the processes by

  • 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

  • On the nearshore impact of wave energy converter arrays

    Creator:
    O'Dea, Annika Magnuson
    Abstract:
    Radiation stresses, defined as the excess flow of momentum due to the presence of waves (Longuet-Higgins, 1964), are the main drivers behind the cross-shore and longshore forcing that results in wave setup, set-down, and longshore currents (e.g. Svendsen, 2006). Longshore currents entrain and transport sediment and therefore play an important...
    Resource Type:
    Masters Thesis
    Full Text:
    coastal evolution (Komar, 1998). Due to their importance in many nearshore processes, quantifying and

  • Real-Time Estimation and Prediction of Wave Excitation Forces for Wave Energy Control Applications

    Creator:
    Ling, Bradley A.
    Abstract:
    Wave energy is emerging as a new potential source for renewable energy generation. However, wave energy technology is not currently cost competitive with other more mature renewable energy sources such as wind and solar. One approach that researchers and developers are taking to reduce the cost of wave energy is...
    Resource Type:
    Masters Thesis
    Full Text:
    plementation of either of these algorithms was included in the paper. A nonlinear MPC approach was then

  • Spectral Analysis of Upper Ocean Surface Wave Structure using χSOLO Floats in the Bay of Bengal

    Creator:
    Ball, Matthew S.
    Abstract:
    Surface waves play a vital role in air-sea interactions, and being able to easily measure them in-situ validates and improves predictive models. Here, we diagnose surface wave properties in the Bay of Bengal using modified vertical SOLO II profiling floats, which are regularly used as part of the Argo ocean...
    Resource Type:
    Honors College Thesis
    Full Text:
    . Waves. In Waves, Tides and Shallow-Water Processes, pages 8–37. The Open University, 1997. [5] P. K

  • Wave-current interaction induced by standing long waves in the surf zone

    Creator:
    Phaksopa, Jitraporn
    Abstract:
    This dissertation has focused on the charateristics of bubbles generated by breaking waves and the feedback of wave-current interaction on the forcing mechanism of low frequency wave especially basin seiching wave. For the first study, Optical image capture observations of breaking waves in a laboratory surf zone are presented. The...
    Resource Type:
    Dissertation
    Full Text:
    the coastal region. Among the other coastal processes, waves are the most significant mechanism in

  • Model Predictive Control for Underwater Robots in Ocean Waves

    Creator:
    Fernández, Daniel C.
    Abstract:
    Underwater robots beneath ocean waves can benefit from feedforward control to reduce position error. This thesis proposes a method using Model Predictive Control (MPC) to predict and counteract future disturbances from an ocean wave field. The MPC state estimator employs a Linear Wave Theory (LWT) solver to approximate the component...
    Resource Type:
    Masters Thesis
    Full Text:
    Model Predictive Control for Underwater Robots in Ocean

  • Wave field patterns generated by wave energy converters

    Creator:
    McNatt, J. Cameron
    Abstract:
    The eventual deployment of wave energy converters (WECs) on a commercial scale will necessitate the grouping of devices into arrays or "wave farms," in order to minimize overhead costs of mooring, maintenance, installation, and electrical cabling for shoreward power delivery. Closely spaced WECs will interact hydrodynamically through diffracted and radiated...
    Resource Type:
    Masters Thesis
    Full Text:
    processes, and even the efficacy of other arrays of wave energy converters. In the near WEC wave field, this

  • Statistical distribution of swash maxima on natural beaches

    Creator:
    Holland, K. Todd
    Abstract:
    Beach response to overwash processes is a topic of significant importance. Two particular aspects of this topic were chosen for detailed analysis: the distribution of maximum wave runup elevations and the cross-beach celerity gradient of overwash bores on natural beaches. Data were collected using both traditional nearshore instrumentation and recently...
    Resource Type:
    Masters Thesis
    Full Text:
    overwash processes can be sufficiently sampled using video techniques. More work is needed in terms of

  • On coastal trapped waves at low latitudes in a stratified ocean

    Creator:
    Romea, Richard Dennis
    Abstract:
    The response on the continental shelf of a baroclinic ocean to driving by an alongshore coastal wind stress and by barotropic and baroclinic wind forced interior motions is studied as a function of latitude. The relative excitation of continental shelf waves and internal Kelvin waves is studied. The response of...
    Resource Type:
    Dissertation
    Full Text:
    Doctor of Philosophy in Oceanography presented on June 10, 1982 Title: On Coastal Trapped Waves at Low