Record details

Title
    Seismic anisotropy of the mantle lithosphere beneath the Swedish National Seismological Network (SNSN)
Author
    Babuška, Vladislav
    Bodvarsson, R.
    Eken, T.
    Plomerová, Jaroslava
    Roberts, R.
    Shomali, H.
    Vecsey, Luděk
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Tectonophysics
Vol./nr.
    Roč. 480, č. 1-4
Pages
    s. 241-258
Year
    2010
Notes
    Projekt: IAA300120709, GA AV ČR3cav_un_auth*0228940
    Projekt: KJB300120605, GA AV ČR, CZ3cav_un_auth*0216778
    Rozsah: 18 s.
    Výzkumný záměr: CEZ:AV0Z30120515
Subject category
    Baltic Shield
    domains and their boundaries in the mantle
    mantle lithosphere
    seismic anisotropy
Keyword
    Anisotropy
    Beneath
    Lithosphere
    Mantle
    National
    Network
    Seismic
    Seismological
    SNSN
    Swedish
Abstract (in english)
   Body-wave analysis - shear-wave splitting and P-travel time residuals - detect anisotropic structure of the upper mantle beneath the Swedish part of Fennoscandia. Geographic variations of both the splitting measurements and the P-residual spheres map regions of different fabrics of the mantle lithosphere. The fabric of individual mantle domains is internally consistent, usually with sudden changes at their boundaries. Distinct back-azimuth dependence of SKS splitting excludes single-layer anisotropy models with horizontal symmetry axes for the whole region. Based upon joint inversion of body-wave anisotropic parameters, we instead propose 3D selfconsistent anisotropic models of well-defined mantle lithosphere domains with differently oriented fabrics approximated by hexagonal aggregates with plunging symmetry axes.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013