Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Global and local isostatic coherence from the wavelet transform

    117402_4000_Kirby_GRL_04.pdf (177.2Kb)
    Access Status
    Open access
    Authors
    Kirby, Jonathan
    Swain, Christopher
    Date
    2004
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Kirby, J.F. and Swain, C.J.. 2004. Global and local isostatic coherence from the wavelet transform. Geophysical Research Letters. 31 (24): L24608-1- L24608-5.
    Source Title
    Geophysical Research Letters
    DOI
    10.1029/2004GL021569
    ISSN
    00948276
    Faculty
    Department of Spatial Sciences
    Faculty of Science and Engineering
    The Western Australian School of Mines
    Remarks

    Copyright © 2004 American Geophysical Union.

    Publisher’s Citation: Kirby, J. F., and C. J. Swain (2004), Global and local isostatic coherence from the wavelet transform, Geophysical Research Letters, Vol. 31, L24608, doi: 10.1029/2004GL021569.

    URI
    http://hdl.handle.net/20.500.11937/29817
    Collection
    • Curtin Research Publications
    Abstract

    A method to compute the variations in lithospheric elastic thickness (Te) has been developed, using the wavelet transform. The technique, which uses a superposition of two-dimensional Morlet wavelets in a geometry named a 'fan' wavelet, is designed to yield isotropic yet complex wavelet coefficients for the co- and cross-spectra of gravity and topography data. These are then used to compute a spatially-varying, isostatic coherence, from which both global and local estimates may be obtained. We appliedthe method to synthetic gravity and topography generated for a thin elastic plate of uniform thickness 20 km, yielding an apparent, spatially variable Te of 24.5 3.5 km. The estimated global coherence for this model appears to fit the theoretical prediction as well as Fourier transform-based estimates, and is smoother than these. We also computed the wavelet coherence, and hence spatially-varying Te, for a plate of non-uniform thickness, yielding a difference with the model of -2.0 1.7 km.

    Related items

    Showing items related by title, author, creator and subject.

    • An accuracy assessment of the fan wavelet coherence method for elastic thickness estimation
      Kirby, Jonathan; Swain, Christopher (2008)
      A variety of methods exist to estimate the elastic thickness (T e ) of the lithosphere. In this contribution, we attempt to provide an indication of how well the fan wavelet coherence method recovers T e , through synthetic ...
    • Estimating the mechanical anisotropy of the Iranian lithosphere using the wavelet coherence method
      Zamani, A.; Samiee, J.; Kirby, Jonathan (2013)
      We calculated anisotropic wavelet coherence between Bouguer anomaly and topography in order to map the anisotropy of the effective elastic thickness of the Iranian lithosphere (Te). An orthotropic elastic plate model is ...
    • The effective elastic thickness of the lithosphere in the collision zone between Arabia and Eurasia in Iran
      Zamani, A.; Samiee, J.; Kirby, Jon (2014)
      The effective elastic thickness, Te, has been calculated in the collision zone between Arabia and Eurasia in Iran from the wavelet coherence. The wavelet coherence is calculated from Bouguer anomalies and topography data ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.