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Filtering by: Committee Member Özkan-Haller, Tuba Remove constraint Committee Member: Özkan-Haller, Tuba Academic Affiliation Civil and Construction Engineering Remove constraint Academic Affiliation: Civil and Construction Engineering

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  • Assessment of the Active Absorption System of the Large Wave Flume

    Creator:
    Savić, Una
    Abstract:
    The Large Wave Flume at the O.H. Hinsdale Wave Research Laboratory houses a piston wavemaker with a built-in active absorption system designed by MTS Systems Corporation. The performance of the active absorption system has not been properly assessed yet. This thesis evaluates the performance of the MTS active absorption system...
    Resource Type:
    Masters Thesis
    Full Text:
    . I would like to thank Tuba Ozkan-Haller for always being willing to listen and to Harry Yeh for

  • Wave-by-Wave Forecasting via Assimilation of Marine Radar Data

    Creator:
    Simpson, Alexandra Joyce
    Abstract:
    A wave-by-wave forecasting system is desired for optimization of wave energy conversion devices and for improving safety of vessel-based marine operations. This study outlines the first validation attempts of a recently developed forecasting system called Wavecast. The forecasting approach uses X-Band marine radar images for data assimilation, then reconstructs and...
    Resource Type:
    Masters Thesis
    Full Text:
    like to acknowledge. To my committee members, Tuba Özkan-Haller, Ted Brekken and Geoff Hollinger

  • 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:
    , Peter Ruggiero, Tuba Özkan-Haller, and Emily Shroyer for their feedback. Finally, I would like to

  • Coupled wave and surge modeling of Tillamook Bay, Oregon : extreme events and climate change impacts

    Creator:
    Cheng, Tiffany Kay
    Abstract:
    Estuaries represent the confluence of land and ocean environments and encompass a number of complex interactions amongst tides, winds, offshore waves and the riverine contributions, all of which contribute to total water levels (TWLs). The study of TWLs and the relative weight of its components can assist local communities in...
    Resource Type:
    Masters Thesis
    Full Text:
    Ozkan-Haller and Peter Ruggiero for their insightful critiques and suggestions along the way. With Dr

  • Analysis of waves in the near-field of wave energy converter arrays through image processing

    Creator:
    Black, Colleen
    Abstract:
    Oregon State University conducted a series of laboratory experiments to measure and quantify the near-field wave effects caused within arrays of Wave Energy Converters (WEC). As the waves and WECs interact, the WECs generate radiated waves; these effects vary with the location within the array. Analyzing the near-field waves will...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: ______________________________________________________ Merrick C. Haller

  • 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:
    . Thank you to my committee members, Dan Cox, Peter Ruggiero, Tuba Ozkan- Haller, and John Simonsen for

  • The Application of Machine Learning Techniques on Marine Science Models

    Creator:
    Ellenson, Ashley
    Abstract:
    A variety of stakeholders require information about marine systems. In the open ocean, pilots of marine vessels require knowledge about environmental conditions for safe passage and route planning. On the coastline, communities rely on information about nearshore dynamics to increase safety from coastal hazards such as nearshore pollutants, coastal erosion,...
    Resource Type:
    Dissertation
    Full Text:
    graduate student spectacular and filled with friendship. Thanks to Tuba Özkan-Haller for believing in me

  • 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:
    here in Corvallis. I am thankful to Dr. Solomon Yim, Dr. Tuba Ozkan-Haller, Dr. Peter Ruggiero

  • Climate Change Impacts to Estuarine Hydrodynamics: Tools, Methodologies, and Predictions

    Creator:
    Parker, Kai A.
    Abstract:
    Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with the idea that hazards and environmental pressures are changing and may be characteristically different in the near future. This has led to a need for scientific knowledge and tools that can help coastal communities prepare and build resilience...
    Resource Type:
    Dissertation
    Full Text:
    development as a researcher. To my other committee members, Tuba Ozkan-Haller, Sarah Emerson, and Emily

  • On the Imaging of Rip Currents in X-band Radar

    Creator:
    Kloster, Rebecca
    Abstract:
    Rip currents pose a serious danger to visitors of bathing beaches; they are also an important process in surf zone circulation. Haller et al. [2014] demonstrated that shore-based X-band radar can be used to compliment in situ measurements of rip currents. However, little is known of the underlying radar imaging...
    Resource Type:
    Masters Thesis
    Full Text:
    , Tuba Özkan-Haller, Dan Cox, and Ed Brook, for their feedback. Last, I would like to thank the