TY  - JOUR
AU  - Wüstefeld Andreas, Bokelmann Götz
PY  - 2009//
TI  - Identifying global seismic anisotropy patterns by correlating shear-wave splitting and surface-wave data
JO  - Physics of the Earth and Planetary Interiors
SP  - 198
EP  - 212
VL  - 176
IS  - 34
KW  - Anisotropy
KW  - Surface waves
KW  - Splitting
KW  - Upper mantle
KW  -
N2  - We compare a global compilation of shear-wave splitting measurements with azimuthal seismic anisotropy parameters inferred from surface-wave tomography. The currently available splitting dataset is taken from a novel comprehensive collection of available publications that is updated interactively online. The comparison between the two types of data is made by calculating predicted splitting parameters from the anisotropic tomography model. Comparing these predicted splitting parameters with the observed ones, we find a considerable correlation between the two datasets at global scale. This result is noteworthy, since such correlation did not seem to exist in previous studies. The spatial resolution associated with the two types of methods is rather different. While surface waves have good vertical resolution and poor lateral resolution of several hundreds of kilometers, SKS splitting measurements have good lateral, but poor vertical resolution. The correlation can be understood in light of recent propositions that anisotropy seen by SKS splitting constrains mostly the upper mantle, and therefore a similar depth region as surface waves. The correlation also confirms the generally good quality of the shear-wave measurements, as well as that of the anisotropic tomography model.
SN  - 0031-9201
UR  - http://dx.doi.org/10.1016/j.pepi.2009.05.006
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=2906), last updated on Wed, 03 Jul 2024 13:58:01 +0200
ID  - WuestefeldAndreas2009
ER  -