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Friederich & Huang 1996
Friederich, W. and Huang, Z.-X. (1996). Evidence for upper mantle anisotropy beneath southern Germany from Love and Rayleigh wave dispersion. Geophysical Research Letters 23: doi: 10.1029/96GL01216. issn: 0094-8276.

We advance evidence for the existence of seismic anisotropy in the upper mantle beneath Southern Germany from the dispersion of Love and Rayleigh waves. The evidence is based upon a substantial Love-Rayleigh discrepancy observed between periods of 40 s and 120 s. An isotropic mantle model clearly fails to explain the observed dispersion curves. Systematic inversion experiments with transversely isotropic models show that anisotropy at depths between 70 km and 200 km is sufficient to explain the observed dispersion curves. Our data require neither anisotropy at greater depths nor anisotropy in the crust though we cannot exclude its presence there. A search for azimuthal anisotropy of Rayleigh wave propagation indicates a weak, but possibly insignificant azimuthal anisotropy of about 1% for periods less than 40 s with fast directions between 20 and 50 degrees east of north. At larger periods azimuthal anisotropy is less than 1% and the fast directions scatter considerably as period varies. ¿ American Geophysical Union 1996

BACKGROUND DATA FILES

Abstract

Keywords
Tectonophysics, Dynamics of lithosphere and mantle—general
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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