• About
    • Login
    View Item 
    •   Institutional Repository Home
    • College of Arts and Science
    • Department of Earth and Environmental Sciences
    • Earth and Environmental Sciences - Student Publications
    • View Item
    •   Institutional Repository Home
    • College of Arts and Science
    • Department of Earth and Environmental Sciences
    • Earth and Environmental Sciences - Student Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Institutional RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDepartmentThis CollectionBy Issue DateAuthorsTitlesSubjectsDepartment

    My Account

    LoginRegister

    Nonlocal Sediment Transport on Steep Lateral Moraines, Eastern Sierra Nevada, California, USA

    Doane, Tyler H.
    Furbish, David Jon
    Roering, Joshua J.
    Schumer, Rina
    Morgan, Daniel J.
    : http://hdl.handle.net/1803/8678
    : 2017

    Abstract

    Recent work has highlighted the significance of long-distance particle motions in hillslope sediment transport. Such motions imply that the flux at a given hillslope position is appropriately described as a weighted function of surrounding conditions that influence motions reaching the given position. Although the idea of nonlocal sediment transport is well grounded in theory, limited field evidence has been provided. We test local and nonlocal formulations of the flux and compare their ability to reproduce land-surface profiles of steep moraines in California. We show that nonlocal and nonlinear models better reproduce evolved landsurface profiles, notably the amount of lowering and concavity near the moraine crest and the lengthening and straightening of the depositional apron. The analysis provides the first estimates of key parameters that set sediment entrainment rates and travel distances in nonlocal formulations, and highlights the importance of correctly specifying the entrainment rate when modeling land-surface evolution. Moraine evolution associated with nonlocal and nonlinear transport formulations, when described in terms of the evolution of the Fourier transform of the moraine surface, displays a distinct behavior involving growth of certain wavenumbers, in contrast to the decay of all wavenumbers associated with linear transport. Nonlinear and nonlocal formulations share key mathematical elements yielding a nonlinear relation between the flux and the land-surface slope.
    Show full item record

    Files in this item

    Thumbnail
    Name:
    NonlocalMoraine_2.pdf
    Size:
    3.475Mb
    Format:
    PDF
    View/Open
    Name:
    NonlocalFourierExample.m
    Size:
    5.670Kb
    Format:
    application/
    Description:
    MATLAB Script File
    View/Open

    This item appears in the following collection(s):

    • Earth and Environmental Sciences - Student Publications

    Connect with Vanderbilt Libraries

    Your Vanderbilt

    • Alumni
    • Current Students
    • Faculty & Staff
    • International Students
    • Media
    • Parents & Family
    • Prospective Students
    • Researchers
    • Sports Fans
    • Visitors & Neighbors

    Support the Jean and Alexander Heard Libraries

    Support the Library...Give Now

    Gifts to the Libraries support the learning and research needs of the entire Vanderbilt community. Learn more about giving to the Libraries.

    Become a Friend of the Libraries

    Quick Links

    • Hours
    • About
    • Employment
    • Staff Directory
    • Accessibility Services
    • Contact
    • Vanderbilt Home
    • Privacy Policy