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  • Shear and convective turbulence in a model of thermohaline intrusions

    Creator:
    Mueller, Rachael
    Abstract:
    Thermohaline interleaving is an important mechanism for laterally fluxing salt, heat, and nutrients between oceanic water masses. Interleaving is driven by a release of potential energy resulting from the vastly differing diffusivities of heat and salt in seawater. The flows are composed of stacked intrusions that flux more buoyant and...
    Resource Type:
    Masters Thesis
    Full Text:
    K cnv 0.09 section 2.3.4 N2 Brunt-Väisälä frequency (3.0× 10−3)2s−2 Ruddick (1992) Rbρ

  • Limiting copper loss from treated wood in or near aquatic environments

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Copper migration from treated wood has created concerns within the environmental community because of the potential effects of this heavy metal on aquatic organisms. Migration can be limited, to some extent, by more controlled treatments and by post-treatment processing, but these actions cannot completely overcome the problem. An alternative approach...
    Resource Type:
    Masters Thesis

  • Turbulence in sheared, salt-fingering favorable environment

    Creator:
    Kimura, Satoshi
    Abstract:
    Instability and turbulence in sheared, salt-fingering favorable stratification are studied using three-dimensional direct numerical simulations (DNS). Salt-fingering favorable stratification is gravitationally stable, because the unstable vertical gradient of salinity is stabilized by temperature (warm, salty over cool, fresh water-masses). Salt-fingering instability can occur at the interface of these different water-masses....
    Resource Type:
    Dissertation
    Full Text:
    difficult. Thus,KS is estimated asK obs S = Rρ γs Kχ z T in the interpretations of observations

  • Improving the durability of second growth timbers of naturally durable species

    Creator:
    Cabrera Orozco, Yohanna
    Abstract:
    While the heartwood of many wood species exhibits excellent resistance to fungal and insect attack, this resistance is sometimes diminished in second-growth material of the same species. The reasons for the reduced durability are unclear, but they may reflect a combination of both higher proportions of sapwood as well as...
    Resource Type:
    Masters Thesis
    Full Text:
    in the wood (Jin and Preston, 1991; Doyle and Ruddick, 1994) Fixation can also occur by cation

  • Effects of best management practices on copper migration from Douglas-fir lumber treated with ACZA, CA or ACQ

    Creator:
    Ye, Min
    Abstract:
    Copper is the most common ingredient in waterborne preservatives and provides excellent activity against most fungi and insects. However, issues associated with copper migration from treated wood have created increasing concerns about potential risks to non-target organisms in surrounding environments, especially those in sensitive aquatic environments. Various Best Management Practices...
    Resource Type:
    Masters Thesis
    Full Text:
    , 1991; Ruddick, 1996). As ammonia evaporates from treated wood, arsenic is fixed by bonding with

  • Effects of biocide treatment on durability and fungal colonization of teak, western redcedar, and redwood

    Creator:
    Cabrera Orozco, Yohanna
    Abstract:
    Treating durable, second-growth or plantation-grown material with supplemental chemicals could improve durability while enhancing the uniformity of the products. To test this hypothesis, the effect of two candidate biocide treatments on the durability of teak, redwood, and western redcedar was assessed in a ground proximity field test established in Hawaii....
    Resource Type:
    Dissertation

  • The Role of Submesoscale Features in Transporting Heat and Salt Across Ocean Fronts

    Creator:
    Sanchez-Rios, Alejandra
    Abstract:
    The focus of this dissertation is the analysis of submesoscale and finescale features measured at oceanic fronts and the role they play in the transport of heat and salt. Two different geographical areas were used to analyze this transport: one, an area on the western side of the North Atlantic...
    Resource Type:
    Dissertation
    Full Text:
    velocity (a-e), relative cross- flow velocity (f-j), and relative vorticity ζk = ( ∂v ∂x − ∂u ∂y ) f−1 (k

  • An Efficient Workflow and Accuracy Assessment for ICESat-2 and Multispectral Imagery Fusion for Bathymetric Mapping

    Creator:
    Babbel, Benjamin J.
    Abstract:
    Interest in mapping bathymetry from multispectral satellite imagery has grown steadily since the 1970s. Notwithstanding the significant advancements made during this time, one limitation is that the group of algorithms collectively referred to as Satellite Derived Bathymetry (SDB) generally require “seed depths,” hindering their use for areas lacking reliable reference...
    Resource Type:
    Masters Thesis
    Full Text:
    approach for atmospheric correction, eliminating the need for in-situ data (Vanhellemont and Ruddick 2016

  • Copper compounds for durable composites : effects on material properties

    Creator:
    Vidrine, Cheney L.
    Abstract:
    The effects of incorporation of selected biocides on physical and mechanical properties of aspen strandboard were assessed using five copper-based preservatives or zinc borate at three retention levels. Tebuconazole or 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one (DCOI) were added as co-biocides to selective copper-based treatments. Mold box tests showed that only panels treated with DCOI...
    Resource Type:
    Masters Thesis

  • Remote Sensing Tools for Evaluating Climate Change Impacts in Coastal Environments

    Creator:
    Herrmann, Joan F.
    Abstract:
    Climate change has pervasive impacts on Earth’s diverse ecosystems. Observed and projected effects that impact coastal environments pose unique challenges. Coastal regions provide numerous ecosystem services (e.g., fisheries, nursery habitats, erosion control, and water filtering and detoxification), house 40% of the US population, and contribute to 58% of the national...
    Resource Type:
    Masters Thesis