scholarly journals Insights on Upper Mantle Melting, Rheology, and Anelastic Behavior From Seismic Shear Wave Tomography

2018 ◽  
Vol 19 (10) ◽  
pp. 3892-3916 ◽  
Author(s):  
Laura Cobden ◽  
Jeannot Trampert ◽  
Andreas Fichtner
Keyword(s):  
Shear Wave ◽  
Upper Mantle ◽  
Mantle Melting ◽  
Seismic Shear ◽  
Wave Tomography ◽  
Anelastic Behavior

A shear wave velocity model of the European upper mantle from automated inversion of seismic shear and surface waveforms

2012 ◽  
Vol 191 (1) ◽  
pp. 282-304 ◽  
Author(s):  
C. P. Legendre ◽  
T. Meier ◽  
S. Lebedev ◽  
W. Friederich ◽  
L. Viereck-Götte
Keyword(s):  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Upper Mantle ◽  
Velocity Model ◽  
Seismic Shear

Regional Sn velocities and shear velocity in the upper mantle

1973 ◽  
Vol 63 (2) ◽  
pp. 469-475
Author(s):  
Stephen Huestis ◽  
Peter Molnar ◽  
Jack Oliver
Keyword(s):  
Shear Wave ◽  
Western Australia ◽  
Upper Mantle ◽  
Seismic Data ◽  
Shear Velocity ◽  
Apparent Velocity ◽  
Mantle Structure ◽  
Uppermost Mantle ◽  
Seismic Shear ◽  
Upper Mantle Structure

abstract Determinations by various authors of the apparent velocity of the seismic shear wave Sn, which propagates in the uppermost mantle, are presented for several of the Earth's stable regions. Measurements of the velocity over two additional shield areas, India and Western Australia, were made and gave values of 4.72±0.03 km/sec and 4.75-4.87 km/sec, respectively. In general, the Sn velocity is greater than 4.7 km/sec. As the stable regions cover most of the Earth's surface and this velocity is representative of the shear velocity in the uppermost mantle, it is useful as a constraint in inversion of seismic data to determine upper-mantle structure.

scholarly journals Shear-wave travel times from SS

1979 ◽  
Vol 69 (6) ◽  
pp. 1715-1732
Author(s):  
Rhett Butler
Keyword(s):  
Shear Wave ◽  
Upper Mantle ◽  
Significant Variation ◽  
Canadian Shield ◽  
Correlation Technique ◽  
Lateral Heterogeneity ◽  
Travel Times ◽  
The Earth ◽  
Seismic Shear ◽  
Wave Travel

abstract The seismic shear phase SS is considered as a tool in the reconnaissance of the Earth. The Hibert transform is empirically verified as a reasonable mimic of the distortion incurred at the internal caustic in the propagation of SS. Travel times are obtained by a waveform correlation technique for 26 well-recorded SHSH waves from the 1968 Borrego Mountain earthquake. Significant variation is found in the travel-time residuals for paths reflected under the Canadian shield. A correlation of the variation with tectonic sub-province is suggested. The data are sufficiently precise to indicate lateral heterogeneity of several percent in the upper mantle velocities within the Canadian shield.

Seismic anisotropy of the crust and upper mantle beneath western Tibet revealed by shear wave splitting measurements

2018 ◽  
Vol 216 (1) ◽  
pp. 535-544 ◽  
Author(s):  
Changhui Ju ◽  
Junmeng Zhao ◽  
Ning Huang ◽  
Qiang Xu ◽  
Hongbing Liu
Keyword(s):  
Shear Wave ◽  
Upper Mantle ◽  
Seismic Anisotropy ◽  
Shear Wave Splitting ◽  
Crust And Upper Mantle ◽  
Wave Splitting
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