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  • Article title : Teleseismic observations from the Baltic Shield lithosphere beneath Sweden
    Article type : Tectonic & Seismotectonic
    Location : International Geological Congress,oslo 2008

    Fulltext :

    We investigate seismic wave velocities of the upper mantle below the Fennoscandia with the aim of elucidating previous and ongoing geodynamic processes. Over the last decade an increasing volume of seismological data has become available from projects such as TOR and SVEKALAPKO and from the new Swedish National Seismic Network (SNSN), providing new insights into large scale structures below Fennonscandia. Most of the results which are presented here come from the seismic data acquired by SNSN, which is operated by Uppsala University along the Swedish part of the shield area with 60 modern 3-component broadband stations. We present analyses of bulk isotropic velocity and anisotropy primarily using teleseismic tomography and SKS splitting methods. A joint analysis of shear wave splitting parameters with teleseismic P wave residuals will be performed to complement teleseismic body wave (P, SH, and SV) tomography. Finally a possible identification of the lithospheric domains over the Baltic Shield (i.e. Archaean-Proterozoic) is targeted.

    Address : 1Uppsala University, Sweden;2Geophysical Institute, Czech Republic
    Celebration date : 23 Tuesday September 2008
    Author name : Eken, Tuna1; Plomerova, Jaroslava2; Roberts, Roland1; Shomali, Hossein1; Vecsey, Ludek2; Babuska, Vladislav2; Bodvarsson, Reynir1