scholarly journals Shear velocity structure and azimuthal anisotropy beneath eastern North America from Rayleigh wave inversion

2003 ◽  
Vol 108 (B8) ◽  
Author(s):  
Aibing Li
Keyword(s):  
North America ◽  
Rayleigh Wave ◽  
Velocity Structure ◽  
Shear Velocity ◽  
Azimuthal Anisotropy ◽  
Eastern North America ◽  
Wave Inversion

Shear Velocity Estimation based on Rayleigh-wave Inversion

2017 ◽  
Author(s):  
Lieqian Dong* ◽  
Yimeng Zhang ◽  
Kui Zhang
Keyword(s):  
Rayleigh Wave ◽  
Shear Velocity ◽  
Velocity Estimation ◽  
Wave Inversion

scholarly journals Shear velocity structure of the Mariana mantle wedge from Rayleigh wave phase velocities

2010 ◽  
Vol 115 (B11) ◽  
Author(s):  
Moira L. Pyle ◽  
Douglas A. Wiens ◽  
Dayanthie S. Weeraratne ◽  
Patrick J. Shore ◽  
Hajime Shiobara ◽  
...  
Keyword(s):  
Rayleigh Wave ◽  
Mantle Wedge ◽  
Velocity Structure ◽  
Shear Velocity ◽  
Phase Velocities ◽  
Wave Phase

One-dimensional Shear Velocity Structure of Northern Africa from Rayleigh Wave Group Velocity Dispersion

2001 ◽  
Vol 158 (8) ◽  
pp. 1475-1493 ◽  
Author(s):  
S. E. Hazler ◽  
A. F. Sheehan ◽  
D. E. McNamara ◽  
W. R. Walter
Keyword(s):  
Rayleigh Wave ◽  
Group Velocity ◽  
Velocity Dispersion ◽  
Velocity Structure ◽  
Group Velocity Dispersion ◽  
Shear Velocity ◽  
Northern Africa ◽  
Wave Group ◽  
One Dimensional

scholarly journals Multimode Rayleigh wave inversion for heterogeneity and azimuthal anisotropy of the Australian upper mantle

2002 ◽  
Vol 151 (3) ◽  
pp. 738-754 ◽  
Author(s):  
F. J. Simons ◽  
R. D. van der Hilst ◽  
J.-P. Montagner ◽  
A. Zielhuis
Keyword(s):  
Rayleigh Wave ◽  
Upper Mantle ◽  
Azimuthal Anisotropy ◽  
Wave Inversion

Azimuthally anisotropic ambient-noise tomography using the AlpArray seismic network

2020 ◽  
Author(s):  
Emanuel Kästle ◽  
Irene Molinari ◽  
Lapo Boschi ◽  
AlpArray Working Group
Keyword(s):  
Phase Velocity ◽  
Ambient Noise ◽  
Velocity Structure ◽  
Sedimentary Basins ◽  
Shear Velocity ◽  
Velocity Model ◽  
Azimuthal Anisotropy ◽  
Seismic Network ◽  
Fast Axis ◽  
Noise Field

<p>We make use of the AlpArray Seismic Network to study the properties of the ambient-noise field and create a new 3D shear-velocity model of the Alpine crust. The latter will be used to improve our understanding of the tectonic processes that formed the Alps.</p><p>From two years of data, more than 150,000 station-station cross-correlations are extracted and used to evaluate strength and directivity of the noise field and its seasonal variations. Phase-velocity measurements for both Love and Rayleigh waves are obtained and the anisotropic phase-velocity structure is imaged. At mid-crustal levels, the strongest azimuthal anisotropy is found underneath the northern Italian Po plain and in the northern Dinarides, with strengths of 10-20% and a fast axis direction pointing NNE in Italy and NE in the Dinarides. In the western and central Alps we find an approximately NE direction and a strength of 5%; the eastern Alpine fast axis point toward the north with strengths of 2-5%.</p><p>We apply a probabilistic inversion to resolve the 3D shear-velocity structure of the crust. The homogeneous and dense station setup results in a shear-velocity model of unprecedented resolution for the uppermost 60 km of the crust underneath the entire orogen. By using data in the period range between 2 and 100s, we are able to better constrain shallow structures, such as the sedimentary basins, and to link surface-geological features to velocity variations observed at depth.</p>

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