Knowledge of mantle flow in convergent margins is crucial to unravelling both the
contemporary geodynamics and the past evolution of subduction zones. By analysing shear-
wave splitting in both teleseismic and local arrivals, we can determine the relative
contribution from different parts of the subduction zone to the total observed SKS splitting,
providing us with a depth constraint on anisotropy. We use this methodology to determine
the location, orientation and strength of seismic anisotropy in the south-central Chile …

Complex mantle flow exists in subduction zones; one way to reveal these is through the
analysis of shear-wave splitting. In particular, asthenospheric flow beneath the subducting
slab remains poorly understood. There have been numerous studies of shear-wave splitting
along the Andean margin, but a gap in our knowledge remains in south-central Chile. The
TIPTEQ network was deployed along the south central Chilean forearc during 2004-2005;
the density of this network and its proximity to the forearc makes it useful for studying …