• Login
    View Item 
    •   Home
    • Colleges, Departments, and Organizations
    • Hydrology & Atmospheric Sciences
    • Hydrology & Water Resources Technical Reports
    • View Item
    •   Home
    • Colleges, Departments, and Organizations
    • Hydrology & Atmospheric Sciences
    • Hydrology & Water Resources Technical Reports
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA Catalogs

    Statistics

    Display statistics

    Investigations of stream-aquifer interactions using a coupled surface-water and ground-water flow model

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    HWR-1997-020.pdf
    Size:
    16.06Mb
    Format:
    PDF
    Download
    Author
    Vionnet, Leticia Beatriz
    Maddock, Thomas, III
    Goodrich, David C.
    Affiliation
    Department of Hydrology & Water Resources, The University of Arizona
    Issue Date
    1997-01
    Keywords
    Streamflow -- Mathematical models.
    Groundwater flow -- Mathematical models.
    Riparian ecology.
    Aquifers.
    Numerical analysis.
    
    Metadata
    Show full item record
    Publisher
    Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ)
    Rights
    Copyright © Arizona Board of Regents
    Collection Information
    This title from the Hydrology & Water Resources Technical Reports collection is made available by the Department of Hydrology & Atmospheric Sciences and the University Libraries, University of Arizona. If you have questions about titles in this collection, please contact repository@u.library.arizona.edu.
    Abstract
    A finite element numerical model is developed for the modeling of coupled surface-water flow and ground-water flow. The mathematical treatment of subsurface flows follows the confined aquifer theory or the classical Dupuit approximation for unconfined aquifers whereas surface-water flows are treated with the kinematic wave approximation for open channel flow. A detailed discussion of the standard approaches to represent the coupling term is provided. In this work, a mathematical expression similar to Ohm's law is used to simulate the interacting term between the two major hydrological components. Contrary to the standard approach, the coupling term is incorporated through a boundary flux integral that arises naturally in the weak form of the governing equations rather than through a source term. It is found that in some cases, a branch cut needs to be introduced along the internal boundary representing the stream in order to define a simply connected domain, which is an essential requirement in the derivation of the weak form of the ground-water flow equation. The fast time scale characteristic of surface-water flows and the slow time scale characteristic of ground-water flows are clearly established, leading to the definition of three dimensionless parameters, namely, a Peclet number that inherits the disparity between both time scales, a flow number that relates the pumping rate and the streamflow, and a Biot number that relates the conductance at the river-aquifer interface to the aquifer conductance. The model, implemented in the Bill Williams River Basin, reproduces the observed streamflow patterns and the ground-water flow patterns. Fairly good results are obtained using multiple time steps in the simulation process.
    Series/Report no.
    Technical Reports on Hydrology and Water Resources, No. 97-020
    Sponsors
    This research was supported in part by the Fish and Wildlife Service. Its sponsorship and in particular, the continuous support,we received from Steve Cullinan and Les Cunningham is gratefully acknowledged. The research was also supported in part by Microway Company with a gift of an I -860 board and software. Our thanks to Ann and Steve Freid. The views and conclusions contained in this document are those of the authors and should not be interrupted as necessarily representing the official policies, either expressed or implied, of the Fish and Wildlife Service or of the Microway Company Particular thanks go to Laurel Lacher and Shlomo P. Neuman for listening, discussing ideas, and suggesting ideas.
    Collections
    Hydrology & Water Resources Technical Reports

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.