scholarly journals Azimuthal anisotropy of the crust and uppermost mantle in northeast North China Craton from inversion of Rayleigh wave phase velocity

2015 ◽  
Vol 202 (1) ◽  
pp. 624-639 ◽  
Author(s):  
Haopeng Chen ◽  
Liangbao Zhu ◽  
Qingdong Ye ◽  
Qingdong Wang ◽  
Yinghang Yang ◽  
...  
Keyword(s):  
Phase Velocity ◽  
Rayleigh Wave ◽  
North China Craton ◽  
North China ◽  
Azimuthal Anisotropy ◽  
Uppermost Mantle ◽  
Wave Phase ◽  
Wave Phase Velocity ◽  
Rayleigh Wave Phase Velocity

scholarly journals Deformation of the Crust and Upper Mantle beneath the North China Craton and Its Adjacent Areas Constrained by Rayleigh Wave Phase Velocity and Azimuthal Anisotropy

2021 ◽  
Vol 14 (1) ◽  
pp. 110
Author(s):  
Xiaoming Xu ◽  
Dazhou Zhang ◽  
Xiang Huang ◽  
Xiaoman Cao
Keyword(s):  
Phase Velocity ◽  
Rayleigh Wave ◽  
Azimuthal Anisotropy ◽  
The Tibetan Plateau ◽  
Low Velocity ◽  
Crust And Upper Mantle ◽  
Fast Axis ◽  
Wave Phase ◽  
Wave Phase Velocity ◽  
Rayleigh Wave Phase Velocity

The North China Craton (NCC) has experienced strong tectonic deformation and lithospheric thinning since the Cenozoic. To better constrain the geodynamic processes and mechanisms of the lithospheric deformation, we used a linear damped least squares method to invert simultaneously Rayleigh wave phase velocity and azimuthal anisotropy at periods of 10–80 s with teleseismic data recorded by 388 permanent stations in the NCC and its adjacent areas. The results reveal that the anomalies of Rayleigh wave phase velocity and azimuthal anisotropy are in good agreement with the tectonic domains in the study area. Low-phase velocities appear in the rift grabens and sedimentary basins at short periods. A rotation pattern of the fast axis direction of the Rayleigh wave together with a distinct low-velocity anomaly occurs around the Datong volcano. A NW–SE trending azimuthal anisotropy and a low-velocity anomaly at periods of 60–80 s are observed subparallel to the Zhangbo fault zone. The whole lithosphere domain of the Ordos block shows a high-phase velocity and counterclockwise rotated fast axis. The northeastern margin of the Tibetan plateau is dominated by a low-velocity and coherent NW–SE fast axis direction. We infer that the subduction of the Paleo-Pacific plate and eastward material escape of the Tibetan plateau mainly contribute to the deformation of the crust and upper mantle in the NCC.

S-wave velocity structure of the North China from inversion of Rayleigh wave phase velocity

2014 ◽  
Vol 88 ◽  
pp. 178-191 ◽  
Author(s):  
Hao-peng Chen ◽  
Liang-bao Zhu ◽  
Qing-dong Wang ◽  
Pan Zhang ◽  
Ying-hang Yang
Keyword(s):  
Phase Velocity ◽  
Rayleigh Wave ◽  
Wave Velocity ◽  
North China ◽  
Velocity Structure ◽  
S Wave ◽  
Wave Phase ◽  
The North ◽  
Wave Phase Velocity ◽  
Rayleigh Wave Phase Velocity

scholarly journals Direct estimation of the Rayleigh wave phase velocity in microtremors

2006 ◽  
Vol 33 (18) ◽  
pp. n/a-n/a ◽  
Author(s):  
Hidetaka Shiraishi ◽  
Tatsuro Matsuoka ◽  
Hiroshi Asanuma
Keyword(s):  
Phase Velocity ◽  
Rayleigh Wave ◽  
Direct Estimation ◽  
Wave Phase ◽  
Wave Phase Velocity ◽  
Rayleigh Wave Phase Velocity
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