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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.

Studies including hydrologic modeling and data analysis at the Ohio management systems evaluation

Desmond, Eric D. January 2003 (has links)
Thesis (Ph. D.)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains xvii, 104 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: Andy Ward, Dept.of Food, Agricultural, and Biological Engineering. Includes bibliographical references (p. 100-104).

Prediction of parameter values from physical basin characteristics for the U S Geological Survey rainfall-runoff model

Liscum, Fred 08 1900 (has links)
No description available.

Hydrologic modeling as a decision-making tool in wildlife management /

Findley, Stephen Holt, January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 152-163). Also available via the Internet.

A parameterization scheme for modeling land surface hydrological processes

Hurlin, William John. January 1983 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 92-95).

Modeling the seasonal and interannual variations in regional hydrologic balances

Clark, Douglas R. January 1977 (has links)
Thesis--Wisconsin. / Includes bibliographical references (leaves 96-99).

Finite-state models of transport phenomena in hydrologic systems

Campana, Michael Emerson,1948- January 1975 (has links)
Transport phenomena in hydrologic systems are simulated with finite-state models (FSMs), which are similar to mixing cell models in that they utilize a mixing cell as their basic subdivision, yet are more flexible, capable of modeling more complex systems, and easier to manipulate than previous mixing cell models. The basic FSM equations are discrete, recursive forms of the continuity equation for mass transport and the storage equation for fluid transport. Different types of mixing and flow can be simulated by specifying appropriate algorithms for use in the basic equations. Finite-state models thus have a physical basis, although they avoid the use of differential equations. The FSM digital computer model can simulate systems in one, two, or three spatial dimensions with relative facility. In many important cases, transit number and age number distributions can be calculated. These distributions, and especially their means, are useful in determining fluid residence times in hydrologic systems. Two aquifer systems are modeled using finite-state models. In a portion of the Tucson Basin Aquifer of southern Arizona a three-dimensional, steady flow FSM is used to account for the observed carbon-14 age distribution in the aquifer without assuming piston flow in the aquifer and without evaluating dispersion parameters. This model provides a first approximation of the three-dimensional flow distribution, an estimate of the long-term average annual recharge, and fluid residence times in the aquifer. The second FSM, two-dimensional and non-steady flow, accounts for the transient distribution of tritium in the Edwards Limestone of south-central Texas. This aquifer is a highly anisotropic, nonhomogeneous karst aquifer that is difficult to model by traditional methods. In both models, first guesses for cell volumes and flow distributions were made on the basis of available hydrogeological data. Saturated, unsaturated, and open-channel flow also are examined. Flow algorithms for the basic FSM storage equation follow the theory of linear systems, although in certain regimes, especially those involving unsaturated flow, it may be necessary to develop nonlinear flow algorithms. This was not attempted. It is also shown that the finite-state model can simultaneously model the transport of mass and fluid in a hydrologic system. The FSM also has the potential for modeling heat transport, which may prove useful in simulating geothermal reservoirs as well as other systems involving heat transport.

An analysis of transient flow in upland watersheds : interactions between structure and process /

Brown, David Lawrence. January 1995 (has links) (PDF)
Thesis (Ph. D. in Soil Science)--University of California, Berkeley, 1995. / Includes bibliographical references (leaves 110-126).

Coupled flow and contaminant transport modeling in large watersheds

Gunduz, Orhan. January 2004 (has links) (PDF)
Thesis (Ph. D.)--Civil & Environmental Engineering, Georgia Institute of Technology, 2004. / Dr. Paul Work, Committee Member ; Dr. Philip Roberts, Committee Member ; Dr. Mustafa Aral, Committee Chair ; Dr. Terry Sturm, Committee Member ; Dr. Turgay Uzer, Committee Member. Vita. Includes bibliographical references (leaves 442-466).

Understanding the hydrologic effects of frozen soil /

Cherkauer, Keith Aric. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (p. 112-120).

Simulating fully coupled overland and variably saturated subsurface flow using MODFLOW /

Thoms, R. Brad. January 2003 (has links)
Thesis (M.S.)--OGI School of Science & Engineering at OHSU, 2003. / Includes bibliographical references (leaves 64-71).

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