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Filtering by: Creator Nash, Jonathan Remove constraint Creator: Nash, Jonathan Academic Affiliation Civil and Construction Engineering Remove constraint Academic Affiliation: Civil and Construction Engineering

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  • Estimating the in situ Stratification via Remotely-sensed Internal Wave Speeds

    Creator:
    Fang, Chufan
    Abstract:
    This work investigates a methodology for estimating the ocean stratification gradient based on high-resolution, in space and time, remote sensing observations of internal wave propagation speeds. The internal wave speed observations were collected using a shore-based, X-band marine radar and the ocean vertical density profiles were collected simultaneously from an...
    Resource Type:
    Masters Thesis
    Full Text:
    Wengrove, Dr. James Lerczak and Dr. Jonathan Nash. I have been working in the research group for more than

  • A numerical wave tank based on coupled potential flow-viscous flow model

    Creator:
    Zhang, Yi
    Abstract:
    In this study, a coupled potential flow-viscous flow model is used for numerical wave tank simulation. The solver satisfies all the requirements for such a simulation environment. The coupling scheme is based on a non-overlapping heterogeneous domain decomposition method. In this method, the flow domain consists of two subdomains. In...
    Resource Type:
    Dissertation

  • 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:
    . Two goodness-of-fit statistics were calculated: Nash-Sutcliffe Efficiency (NSE), and bias (BIAS

  • Interactive Genetic Algorithms for watershed planning : an investigation of usability and human-centered design

    Creator:
    Piemonti, Adriana Debora
    Abstract:
    Degradation of watersheds is a major concern in areas where adverse climate effects and unsustainable use of the natural resources have caused extensive stresses to watershed systems (e.g., increased floods, increased droughts, worsened in-stream water quality) through the years. While considerable efforts are being made to generate technical solutions that...
    Resource Type:
    Dissertation
    Full Text:
    mentioning my little piece of Venezuela, Nash. He is just the most special guy in my life. Finally, to my

  • 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:
    . First and foremost, I’d like to acknowledge my advisors Meagan Wengrove and Jonathan Nash. Their

  • Depth estimation and frontal imaging via X-band marine radar

    Creator:
    Honegger, David Andrew
    Abstract:
    This dissertation focuses on two core aspects of remote sensing: (a) interpretation of the remotely sensed data to identify and characterize sea surface features of interest, and (b) the quantitative analysis of previously characterized features to produce robust estimates of geophysical variables. Specifically, these aspects are addressed in the context...
    Resource Type:
    Dissertation

  • Extreme Wave Runup and Runup Variability on Beaches

    Creator:
    Li, Chuan
    Abstract:
    Wave runup is an important physical process that affects nearshore sediment transport, coastal erosion, and flooding. Large and unexpected runup events can also be dangerous to beach goers. Extreme runup statistics are essential parameters used in engineering design of marine structures and in coastal management. Although the study of runup...
    Resource Type:
    Dissertation
    Full Text:
    Research Laboratory staff, Harry Yeh, Jonathan D. Nash, and two anonymous reviewers. This thesis is

  • Multi-objective Optimization of Reservoir Operation Under Uncertainty with Robust and Flexible Decision Variables

    Creator:
    Hosseini, Parnian
    Abstract:
    Optimization of reservoir operation is involves various competing objectives for a scarce resource (water). To find the optimal operation of reservoirs, it is essential to consider multiple objectives simultaneously. There are various sources of uncertainty associated with the reservoir operation problem that should be considered as well. The overarching goal...
    Resource Type:
    Dissertation
    Full Text:
    -Reservoir Systems under Uncertainty. Next, I would like to thank Dr. Jonathan Istok for his patience and

  • Decentralized Multiagent Coordination for Connected and Autonomous Vehicle Routing in Congested Networks

    Creator:
    Mostafizi, Alireza
    Abstract:
    In 2017, the cost of congestion in the United States was around 305 billion dollars, and city-dwellers, on average, lost 1400 dollars while sitting 42 hours in traffic jams. Aiming for better mobility and more efficient utilization of the transportation network, emerging connected and autonomous vehicle (CAV) technologies and their...
    Resource Type:
    Dissertation
    Full Text:
    . for giving me the opportunity to work as a Data Scientist, especially Kaushik Sabba, Jonathan Apple