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Civello & Margheriti 2004
Civello, S. and Margheriti, L. (2004). Toroidal mantle flow around the Calabrian slab (Italy) from SKS splitting. Geophysical Research Letters 31: doi: 10.1029/2004GL019607. issn: 0094-8276.

SKS-wave birefringence is likely caused by ongoing and/or fossil mantle flow. Splitting parameters in the southern Tyrrhenian subduction zone define a quite complex pattern of fast directions with large delay times up to 2.7 s. Fast directions are prevalently trench parallel below the slab and rotate to trench normal at the western edge of the slab depicting a ring around it. We interpret these anisotropic patterns, also observed in laboratory experiment, as toroidal mantle flow induced by rollback subduction.

BACKGROUND DATA FILES

Abstract

Keywords
Seismology, Body wave propagation, Seismology, Lithosphere and upper mantle, Tectonophysics, Dynamics of lithosphere and mantle—general, Tectonophysics, Plate boundary—general, Information Related to Geographic Region, Europe
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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