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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Sensitivity Analysis Methods and Results for Tucson Water's Central Wellfield Groundwater Flow Model, Tucson Basin, Southeastern Arizona

Doolen, Matthew Louis January 1994 (has links) (PDF)
Thesis (M.S. - Hydrology and Water Resources)--University of Arizona. / Includes bibliographical references (leaves 183-184).
22

Vertical tritium transport from the shallow unsaturated zone to the atmosphere, Amargosa Desert Research Site, Nevada

Garcia, Christina Amanda. January 2007 (has links)
Thesis (M.S.)--University of Nevada, Reno, 2007. / "August 2007." Includes bibliographical references (leaves 81-85). Online version available on the World Wide Web.
23

Groundwater resource directed measures in karst terrain with emphasis on aquifer characterisation in the cradle of humankind near Krugersdorp, South Africa

Holland, Martin. January 2008 (has links)
Thesis (MSc(Geology))--University of Pretoria, 2008. / Abstract in English. Includes bibliographical references.
24

Accelerated physical modelling of transport processes in soil

Hensley, Patricia Jane January 1989 (has links)
No description available.
25

Thermally induced deformation and effects on groundwater flow in a discontinuous granite mass.

Awadalla, Awadalla Messiha. January 1989 (has links)
Existing analytical treatments of groundwater flow have mostly been founded on classical hydrodynamics, that groundwater motion is derivable from a velocity potential. This conception is in contradiction with the principle of conservation of energy, although it conforms with the principle of the conservation of mass (Hubbert, 1940, p. 285; Scheidegger, 1960, pps. 74-75; Bear, 1972, pps. 122-123). This dissertation shows that both principles can be utilized, based on the fact that a force potential at a point is equal to the work required to transfer a unit mass from this point to another point. This potential is given the symbol φ - gh - gz + (p/ρ) and is incorporated in the force field E. This potential is related to the flow field (q) by the anisotropic hydraulic conductivity. This relation forms a solid formulation for the theory of the flow of fluids through fractured porous media. This relation is applied to develop two basic equations. One partial differential equation, representing flow in the fracture, depending on the actual geometry of the fracture and incorporating the anisotropic parameter of the hydraulic conductivity based on the thermal induced stress and the force potential. A second partial differential equation (storage equation) in two-dimensions for non-steady groundwater flow in confined and saturated aquifers. This storage equation incorporates time, hydraulic conductivity and the radial coordinates. It is solved analytically using the Bessel's functions Jₒ and Kₒ. The two equations represent two models. Both the potential and the thermal hydraulic conductivity constitute a coupling between the two models to render the models a thermohydromechanical model. This aspect is the essential theme underlying this work and is implemented through a matrix-fracture system based on the slow flow and the fast flow behavior. The evaluation of the transient parameters including the aperture becomes possible and falls in line with the physics of the problem. This comprehensive analytical model is found to satisfy the transient demands of the mathematical physics. The application of the phenomena observed in the field from different sources and from Stripa Granite, rendered the model realistic and appropriate to the fractured porous media.
26

Studies on the prediction of groundwater inflow to longwall coal faces

Fawcett, R. J. January 1986 (has links)
No description available.
27

Modeling reactive transport of strontium-90 in heterogeneous variably-saturated subsurface

Wang, Li, January 2007 (has links) (PDF)
Thesis (M.S. in biological and agricultural engineering)--Washington State University, December 2007. / Includes bibliographical references (p. 53-57).
28

Modeling tracers and contaminant flux in heterogeneous aquifers

Jayanti, Shekhar, January 2003 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2003. / Vita. Includes bibliographical references. Available also from UMI Company.
29

Seasonal weather variations as a driving mechanism for groundwater reversals in the Red Lake Peatland, Northern Minnesota /

Evensen, Robin L. Reeve, Andrew S. Brutsaert, Willem F. Morin, J. Louis. January 2001 (has links)
Thesis (M.S.) in Geological Sciences--University of Maine, 2001. / Includes vita. Advisory Committee: Andrew S. Reeve, Asst. Prof. of Geological Sciences, Advisor; Willem Brutsaert, Prof. of Civil and Environmental Engineering; J. Louis Morin, Instr. of Forest Management. Includes bibliographical references (leaves 96-98).
30

Impact of land reclamation and urbanization on groundwater flow systems /

Nandy, Subhas. January 2002 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 167-178).

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