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Seismic anisotropy of the mantle lithosphere beneath the Swedish National Seismological Network (SNSN)
- 1.0331790 - GFÚ 2010 RIV NL eng J - Journal Article
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
R&D Projects: GA AV ČR IAA300120709; GA AV ČR(CZ) KJB300120605
Institutional research plan: CEZ:AV0Z30120515
Keywords : Baltic Shield * mantle lithosphere * seismic anisotropy * domains and their boundaries in the mantle
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 2.509, year: 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.
Permanent Link: http://hdl.handle.net/11104/0177214
Number of the records: 1