Combined Receiver-Function and Surface Wave Phase-Velocity Inversion Using a Niching Genetic Algorithm: Application to Patagonia

2004 ◽  
Vol 94 (3) ◽  
pp. 977-987 ◽  
Author(s):  
J. F. Lawrence
Keyword(s):  
Genetic Algorithm ◽  
Surface Wave ◽  
Phase Velocity ◽  
Receiver Function ◽  
Velocity Inversion ◽  
Wave Phase ◽  
Wave Phase Velocity ◽  
Combined Receiver

scholarly journals Non-linear surface wave phase velocity inversion based on ray theory

2002 ◽  
Vol 151 (2) ◽  
pp. 583-596 ◽  
Author(s):  
Marianne Bruneton ◽  
Véronique Farra ◽  
Helle Anette Pedersen ◽  
Keyword(s):  
Surface Wave ◽  
Phase Velocity ◽  
Ray Theory ◽  
Velocity Inversion ◽  
Wave Phase ◽  
Wave Phase Velocity ◽  
Non Linear

scholarly journals Intrinsic versus extrinsic seismic anisotropy: Surface wave phase velocity inversion

2015 ◽  
Vol 347 (2) ◽  
pp. 66-76 ◽  
Author(s):  
Nian Wang ◽  
Jean-Paul Montagner ◽  
Gäel Burgos ◽  
Yann Capdeville ◽  
Daxin Yu
Keyword(s):  
Surface Wave ◽  
Phase Velocity ◽  
Seismic Anisotropy ◽  
Velocity Inversion ◽  
Wave Phase ◽  
Wave Phase Velocity

Surface-Wave Tomography of Eastern and Central Tibet from Two-Plane-Wave Inversion: Rayleigh-Wave and Love-Wave Phase Velocity Maps

2020 ◽  
Vol 110 (3) ◽  
pp. 1359-1371
Author(s):  
Lun Li ◽  
Yuanyuan V. Fu
Keyword(s):  
Surface Wave ◽  
Tibetan Plateau ◽  
Phase Velocity ◽  
Rayleigh Wave ◽  
Love Wave ◽  
The Tibetan Plateau ◽  
Surface Wave Tomography ◽  
Wave Phase ◽  
Wave Phase Velocity ◽  
Wave Tomography

ABSTRACT An understanding of mantle dynamics occurring beneath the Tibetan plateau requires a detailed image of its seismic velocity and anisotropic structure. Surface waves at long periods (>50  s) could provide such critical information. Though Rayleigh-wave phase velocity maps have been constructed in the Tibetan regions using ambient-noise tomography (ANT) and regional earthquake surface-wave tomography, Love-wave phase velocity maps, especially those at longer periods (>50  s), are rare. In this study, two-plane-wave teleseismic surface-wave tomography is applied to develop 2D Rayleigh-wave and Love-wave phase velocity maps at periods between 20 and 143 s across eastern and central Tibet and its surroundings using four temporary broadband seismic experiments. These phase velocity maps share similar patterns and show high consistency with those previously obtained from ANT at overlapping periods (20–50 s), whereas our phase velocity maps carry useful information at longer periods (50–143 s). Prominent slow velocity is imaged at periods of 20–143 s beneath the interior of the Tibetan plateau (i.e., the Songpan–Ganzi terrane, the Qiangtang terrane, and the Lhasa terrane), implying the existence of thick Tibetan crust along with warm and weak Tibetan lithosphere. In contrast, the dispersal of fast velocity anomalies coincides with mechanically strong, cold tectonic blocks, such as the Sichuan basin and the Qaidam basin. These phase velocity maps could be used to construct 3D shear-wave velocity and radial seismic anisotropy models of the crust and upper mantle down to 250 km across the eastern and central Tibetan plateau.

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