Seismic anisotropy of the mantle lithosphere beneath the Swedish National Seismological Network (SNSN)

0331790 - GFÚ 2010 RIV NL eng J - Článek v odborném periodiku
Eken, T. - Plomerová, Jaroslava - Roberts, R. - Vecsey, Luděk - Babuška, Vladislav - Shomali, H. - Bodvarsson, R.
Seismic anisotropy of the mantle lithosphere beneath the Swedish National Seismological Network (SNSN).
Tectonophysics. Roč. 480, č. 1-4 (2010), s. 241-258. ISSN 0040-1951. E-ISSN 1879-3266
Grant CEP: GA AV ČR IAA300120709; GA AV ČR(CZ) KJB300120605
Výzkumný záměr: CEZ:AV0Z30120515
Klíčová slova: Baltic Shield * mantle lithosphere * seismic anisotropy * domains and their boundaries in the mantle
Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
Impakt faktor: 2.509, rok: 2010

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.
Trvalý link: http://hdl.handle.net/11104/0177214