KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Geography & Atmospheric Science
    • Geography & Atmospheric Science Scholarly Works
    • View Item
    •   KU ScholarWorks
    • Geography & Atmospheric Science
    • Geography & Atmospheric Science Scholarly Works
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Flow laws for glacier ice: comparison of numerical predictions and field measurements

    Thumbnail
    View/Open
    VanderveenC_JG_36(124)324.pdf (1.501Mb)
    Issue Date
    1990-10-05
    Author
    van der Veen, Cornelis J.
    Whillans, I. M.
    Publisher
    International Glaciological Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
    Show full item record
    Abstract
    Ice flow along the 20 km long strain network up-stream of the Dye 3 bore hole in Greenland is studied in detail. By solving the force—balance equations and using selected flow laws, stresses and strain-rates are calculated throughout the section of the ice sheet. The validity of the results is evaluated by comparison with the velocity profile derived from bore-hole-tilting measurements, and with observed surface strain-rates. A number of constitutive relations are tried and most predict a velocity profile at the bore-hole site that is in good agreement with that observed, if appropriate enhancement factors are used. However, there are major discrepancies between modeled and measured surface strain-rates. Use of Nye's generalization of Glen's flow law, or an anisotropic constitutive relation, requires unrealistically large along-flow variations in the enhancement factor. Inclusion of normal stress effects can lead to much better agreement, but it is possible that other processes, such as dynamic recrystallization or primary creep, should be included in the constitutive relation of polar ice.
    Description
    This is the published version, also available here: http://dx.doi.org/10.3189/002214390793701372.
    URI
    http://hdl.handle.net/1808/17348
    DOI
    https://doi.org/10.3189/002214390793701372
    Collections
    • Geography & Atmospheric Science Scholarly Works [201]
    Citation
    Van Der Veen, C. J. & Whillans, I. M. "Flow Laws for Glacier ice: Comparison of Numerical Predictions and Field Measurements." Journal of Glaciology, Number 124, 1990, pp. 324-339(16). http://dx.doi.org/10.3189/002214390793701372.

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    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
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    Login

    Statistics

    View Usage Statistics

    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
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps