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Filtering by: Creator Stammer, D. Remove constraint Creator: Stammer, D. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • The steady state flow of water through unsaturated soil in the low capillary potential region

    Creator:
    Stammers, William Norman
    Abstract:
    Several investigators have recently called attention to the fact that the flux equation for water movement in unsaturated soils may not be an appropriate mathematical model for the development of the theory of unsaturated flow phenomena. An analytical theory is developed for the purpose of testing the validity of the...
    Resource Type:
    Dissertation
    Full Text:
    . D. in Soils (Name) (Degree) (Major) Date thesis is presented August 19, 1965 Title THE STEADY

  • Electron Diffraction of Neutral and Cationic Clusters Doped into Superfluid Helium Droplets

    Creator:
    Lei, Lei
    Abstract:
    In this dissertation, I describe the experimental investigation of electron diffraction of neutral and ionic clusters doped into superfluid helium droplets. The project is aimed at contributing to the development of an overall approach called ‘serial single molecule electron diffraction imaging (ss-EDI), a potential approach to solve macromolecule structures bypassing...
    Resource Type:
    Dissertation
    Full Text:
    . Bill Freund helped me design parts of the experimental setup, Mr. Yuzhong Yao, Mr. Stephen D

  • The South Atlantic Ocean response to local and remote forcings

    Creator:
    Fetter Filho, Antonio F. H.
    Abstract:
    The local and remote sources of variability of the South Atlantic Ocean are investigated using a set of numerical experiments and satellite data. A global, eddy-permitting, numerical simulation is analyzed to investigate the dynamical links between the Antarctic Circumpolar Current (ACC) and the Malvinas Current (MC). The model results indicate...
    Resource Type:
    Dissertation
    Full Text:
    locations): A) the ACC and the west branch; B) the ACC and the Malvinas Current; C) the ACC and section A; D

  • The cross-equatorial structure of tropical instability waves in sea surface height

    Creator:
    Lyman, John M.
    Abstract:
    A linearized model with two vertical modes has been developed to understand observed characteristics of monthly variability in the Equatorial Pacific from TOPEX/POSEIDON measurements of Sea Surface Height (SSH). The 2-mode model is obtained from an equatorial beta plane model that has been linearized about a geostrophically balanced mean flow...
    Resource Type:
    Dissertation
    Full Text:
    .................................... 126 C Higher Order Projection Model ......................................... 128 D N2 Formulation

  • Simulating past, present, and future changes in ENSO : a model evaluation and data-model comparison

    Creator:
    Alder, Jay R.
    Abstract:
    This thesis presents the results of a formal evaluation of a new AOGCM, GENMOM, demonstrating its ability to simulate present-day climate and ENSO dynamics. The model is applied to simulate climate for the Last Glacial Maximum, deglacial, and Holocene time periods. The model output is evaluated against the best available...
    Resource Type:
    Dissertation
    Full Text:
    timescales during the Holocene epoch. Nature, 420, 162– 165, 2002. Rodbell, D. T., Seltzer, G.O., Anderson

  • Three Topics on Coastal Hazards : Propagation, Transformation, and Impact

    Creator:
    Ko, Harrison T.
    Abstract:
    An understanding of natural coastal hazards is essential for improving resilience of coastal communities. Effective management of coastal hazards relies on prediction tools and mitigation structures that have been designed to handle the dynamic coastal system. This dissertation is a collection of manuscripts that cover a diverse range of fundamental...
    Resource Type:
    Dissertation
    Full Text:
    obstacle breadths, D. The coordinate system defined in the figure is used to describe positioning within

  • Surface wind modification near mid-latitude ocean fronts : observational and dynamical analysis

    Creator:
    O'Neill, Larry W.
    Abstract:
    Interactions between surface winds and meanders in mid-latitude sea surface temperature (SST) fronts with horizontal length scales of 100-1000 km are investigated from satellite observations and numerical simulations. Observations from the Sea- Winds scatterometer on the QuikSCAT satellite show that the magnitude, direction, curl, and divergence of the surface wind...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . 100 3.11 Time series of the coupling coefficients αC and αD . . . . . . . . . . . 101 3.12 First mode

  • North Atlantic Climate and Cryosphere Variability Over the Past 20,000 Years

    Creator:
    Sinclair, Gaylen
    Abstract:
    Reconstructing the sensitivity of past climate to forcings, and of ancient glaciers and ice sheets to this climate, can allow us to better understand the range of climate and cryosphere behavior we may see in the coming centuries. The Arctic is a region of particular importance due to its well-documented...
    Resource Type:
    Dissertation
    Full Text:
    Geophysics 50, RG4007. Chen, X., Zhang, X., Church, J.A., Watson, C.S., King, M.A., Monselesan, D

  • A Linear Mixed Model Framework for Spatio-Temporal Random Processes using the Separable and Product-Sum Covariance Structures

    Creator:
    Dumelle, Michael J.
    Abstract:
    We describe spatio-temporal random processes using linear mixed models and discuss estimation, inference, and prediction under this formulation. We show how many commonly used covariances are special cases of this more general framework and pay special attention to the separable and product-sum covariances. The linear mixed model formulation facilitates straightforward...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . 162 C Unbiasedness of the Spatio-Temporal Semivariogram . . . . . . . . . 166 D Right Multiplication

  • Biosynthesis of acivicin and 4-hydroxyacivicin

    Creator:
    Ju, Shyh-chen
    Resource Type:
    Dissertation
    Full Text:
    - hydroxyornithine, 74. By feeding DL- [3,3,4,4-2H d-ornithine, it was found that C-4 deuterium had been retained