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    A field assessment of the value of steady shape hydraulic tomography for characterization of aquifer heterogeneities

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    Issue Date
    2007-05-22
    Author
    Bohling, Geoffrey C.
    Butler, James J., Jr.
    Zhan, Xiaoyong
    Knoll, Michael D.
    Publisher
    American Geophysical Union
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    [1] Hydraulic tomography is a promising approach for obtaining information on variations in hydraulic conductivity on the scale of relevance for contaminant transport investigations. This approach involves performing a series of pumping tests in a format similar to tomography. We present a field-scale assessment of hydraulic tomography in a porous aquifer, with an emphasis on the steady shape analysis methodology. The hydraulic conductivity (K) estimates from steady shape and transient analyses of the tomographic data compare well with those from a tracer test and direct-push permeameter tests, providing a field validation of the method. Zonations based on equal-thickness layers and cross-hole radar surveys are used to regularize the inverse problem. The results indicate that the radar surveys provide some useful information regarding the geometry of the K field. The steady shape analysis provides results similar to the transient analysis at a fraction of the computational burden. This study clearly demonstrates the advantages of hydraulic tomography over conventional pumping tests, which provide only large-scale averages, and small-scale hydraulic tests (e.g., slug tests), which cannot assess strata connectivity and may fail to sample the most important pathways or barriers to flow.
    Description
    This is the published version. Copyright American Geophysical Union
    URI
    http://hdl.handle.net/1808/19210
    DOI
    https://doi.org/10.1029/2006WR004932
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    • Kansas Geological Survey Scholarly Works [40]
    Citation
    Bohling, Geoffrey C., James J. Butler, Xiaoyong Zhan, and Michael D. Knoll. "A Field Assessment of the Value of Steady Shape Hydraulic Tomography for Characterization of Aquifer Heterogeneities." Water Resources Research Water Resour. Res. 43.5 (2007): n. pag. DOI:10.1029/2006WR004932

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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