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Filtering by: Creator Schmidt%2C Mariek E. Remove constraint Creator: Schmidt%2C Mariek E. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Interstitial fluid mixing in estuarine benthic sediments

    Creator:
    Boyce, Allen R.
    Abstract:
    A method of measuring interstitial fluid mixing rates for evaluation of exchange between pore water of estuarine benthic sediments and the overlying water in a bay is presented. Pore water movement is monitored by reducing conductivity of the interstitial fluid within a zone of the benthic sediment to a depth...
    Resource Type:
    Masters Thesis
    Full Text:
    __Redacted for Privacy Abstract approved: Dr. Charles E. Wicks A method of measuring interstitial fluid

  • Deterministic and stochastic control of nonlinear oscillations in ocean structural systems

    Creator:
    King, Paul E.
    Abstract:
    Complex oscillations including chaotic motions have been identified in off-shore and submerged mooring systems characterized by nonlinear fluid-structure interactions and restoring forces. In this paper, a means of controlling these nonlinear oscillations is addressed. When applied, the controller is able to drive the system to periodic oscillations of arbitrary periodicity....
    Resource Type:
    Dissertation
    Full Text:
    perturbation. Substituting this into Eqs. (2a) - (2c) and linearizing the resulting expression yields E + yE

  • Nonlinear dynamic response of bottom-land deep ocean pipelines

    Creator:
    Zimmerman, Michael E.
    Abstract:
    A finite element formulation is developed for the prediction of the large displacement response of pipelines which are placed upon irregularly contoured marine sediments and are subsequently subjected to episodic hydrodynamic loads. The equations of motion during each episode of extreme wave activity are obtained from a variational form of...
    Resource Type:
    Masters Thesis
    Full Text:
    arbitrary later time, tl, gives tl L a2u2 L a2u2 32 du 2 L au 2 adu 2 Ni tf [ fm su 2c b c (f E I dxjj

  • Finite amplitude deep water waves : a comparison of theoretical and experimental kinematics and dynamics

    Creator:
    Jensen, Robert E.
    Abstract:
    Problems associated with quantification of deep water wave kinematics and dynamics are examined. Summaries of Stokes' theory and Dean's stream function theory are reported. A computer algorithm is developed to solve the hydrodynamic characteristics for Stokes' fifth and third order and linear theories. Tests are initiated to verify the results...
    Resource Type:
    Masters Thesis
    Full Text:
    E Appendix F Index 143 151 161 List of Figures Figure Page 1.1 Approximate Range of

  • Development of performance based test procedures for asphalt mixtures

    Creator:
    Kliewer, Julie E.
    Abstract:
    In 1987, Congress authorized a 5 year $150 million dollar research program called the Strategic Highway Research Program (SHRP). SHRP was divided into four major areas, including the asphalt research program. The asphalt research program was divided into six major research contracts, one such contract, SHRP-003A was called Performance Related...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Julie E. Kliewer for the degree of

  • Diffusion of selected radionuclides through Hanford Trench 8 soil material

    Creator:
    Schwab, Kristen E.
    Abstract:
    Shallow land burial in vadose zone sediment at the Hanford Site in Washington is being considered for the disposal of Category 3 low-level waste. A series of column experiments were conducted to evaluate and model the performance of the soil surrounding the trench encasement material for iodine-129 and technetium-99 by...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Kristen E. Schwab for the degree

  • Land surface energy balance and surface soil moisture variation in HAPEX-MOBILHY

    Creator:
    Nichols, William E.
    Abstract:
    The HAPEX-MOBILHY regional experiment provided an significant opportunity to analyze the partition of energy and distribution of water over land surfaces. The combination of remotely sensed data and ground instrument networks over the large-scale in situ experiment allowed investigation of spatial and temporal variation of such hydrologic parameters as the...
    Resource Type:
    Masters Thesis
    Full Text:
    variation in HAPEX-MOBILHY AN ABSTRACT OF THE THESIS OF William E. Nichols for the degree of Master of

  • Computer model : mass transfer from single rising gas bubbles in water

    Creator:
    Sing, Gerald Lum
    Abstract:
    Mass transfer from single rising gas bubbles is generally studied by taking motion pictures of the rising bubbles and analyzing the film for the instantaneous mass transfer coefficient. In this study, a different approach was taken for the analysis of mass transfer. This analysis solved the simultaneous differential equations describing...
    Resource Type:
    Masters Thesis
    Full Text:
    % ACKNOWLEDGMENT The author wishes to express his deepest appreciation to: Dr. Charles E. Wicks for his endless

  • Examining Wave Attenuation Rates and Subsurface Pore Pressures Across Three Marsh Restoration Sill Structures on a Sandy Bed

    Creator:
    Converse, Jordan D.
    Abstract:
    With rising sea levels and more frequent exposure to extreme storms, coastlines worldwide are vulnerable to increased erosion and loss of natural marsh lands. In an effort to lessen these impacts, there is a growing practice of adapting hard or “gray” coastline protection techniques to more nature-based features that promote...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Meagan. E. Wengrove With rising sea levels and more frequent exposure to extreme storms

  • Estimating Drag and Roughness along a Near-Vertical Ice-Ocean Boundary on a Grounded Iceberg

    Creator:
    Cohen, Nadia
    Abstract:
    Ice–ocean interactions have profound consequences for the ocean and climate, influencing the rate of sea level rise. Submarine melt is commonly parameterized using a three-equation formulation for the heat, salt, and momentum conservation equations coupled to a buoyant plume model, together called plume-melt theory. However, recent direct observations of terminus...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ______________________________________________________ Meagan E. Wengrove Ice