Timescales for the evolution of seismic anisotropy in mantle flow

E Kaminski, NM Ribe - Geochemistry, Geophysics, Geosystems, 2002 - Wiley Online Library
We study systematically the relationship between olivine lattice preferred orientation and the
mantle flow field that produces it, using the plastic flow/recrystallization model of Kaminski …

Detection of upper mantle flow associated with the African Superplume

MD Behn, CP Conrad, PG Silver - Earth and Planetary Science Letters, 2004 - Elsevier
A continental-scale, low seismic velocity anomaly in the mid to lower mantle beneath Africa
is a robust feature of global tomographic models. Assuming the low velocities are associated …

Statistical properties of seismic anisotropy predicted by upper mantle geodynamic models

TW Becker, S Chevrot… - Journal of …, 2006 - Wiley Online Library
We study how numerically predicted seismic anisotropy in the upper mantle is affected by
several common assumptions about the rheology of the convecting mantle and deformation …

Anisotropy in the deep Earth

B Romanowicz, HR Wenk - Physics of the Earth and Planetary Interiors, 2017 - Elsevier
Seismic anisotropy has been found in many regions of the Earth's interior. Its presence in the
Earth's crust has been known since the 19th century, and is due in part to the alignment of …

Comparison of azimuthal seismic anisotropy from surface waves and finite strain from global mantle-circulation models

TW Becker, JB Kellogg, G Ekström… - Geophysical Journal …, 2003 - academic.oup.com
We present global models of strain accumulation in mantle flow to compare the predicted
finite-strain ellipsoid (FSE) orientations with observed seismic anisotropy. The geographic …

High‐resolution constraints on Pacific upper mantle petrofabric inferred from surface‐wave anisotropy

JB Russell, JB Gaherty, PYP Lin… - Journal of …, 2019 - Wiley Online Library
Lithospheric seismic anisotropy illuminates mid‐ocean ridge dynamics and the thermal
evolution of oceanic plates. We utilize short‐period (5–7.5 s) ambient‐noise surface waves …

Upper mantle anisotropy beneath Japan from shear wave splitting

MD Long, RD van der Hilst - Physics of the Earth and Planetary Interiors, 2005 - Elsevier
In this study, we utilize data from 64 broadband seismic stations of the Japanese F-net
network to investigate the three-dimensional pattern of anisotropy in the subduction system …

D-Rex, a program for calculation of seismic anisotropy due to crystal lattice preferred orientation in the convective upper mantle

E Kaminski, NM Ribe… - Geophysical Journal …, 2004 - academic.oup.com
Models of development of lattice preferred orientation (LPO) of crystals aggregates in
convective flow are necessary to interpret the anisotropic seismic signature of the Earth′ s …

The cross-convolution method for interpreting SKS splitting observations, with application to one and two-layer anisotropic earth models

W Menke, V Levin - Geophysical Journal International, 2003 - academic.oup.com
We present a new method for determining anisotropic earth models using observations of
split shear waves (such as SKS). The method consists of first constructing two time-series, x …

Radial seismic anisotropy as a constraint for upper mantle rheology

TW Becker, B Kustowski, G Ekström - Earth and Planetary Science Letters, 2008 - Elsevier
Seismic shear waves that are polarized horizontally (SH) generally travel faster in the upper
mantle than those that are polarized vertically (SV), and deformation of rocks under …