Results 91 to 100 of about 1,052 (200)
Full-waveform inversion reveals diverse origins of lower mantle positive wave speed anomalies
Scientific ReportsDetermining Earth’s structure is paramount to unravel its interior dynamics. Seismic tomography reveals positive wave speed anomalies throughout the mantle that spatially correlate with the expected locations of subducted slabs. This correlation has been
Thomas L. A. Schouten +6 more
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Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract On 9 November 2025, a Mw 6.8 Sanriku‐Oki earthquake struck a Japan Trench segment with inferred recurrent aseismic slip and Mw ∼7 earthquakes. Using S‐net seafloor data, we examine the preparatory and post‐mainshock evolution of this foreshock–mainshock–aftershock sequence.
Keisuke Yoshida
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Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract The 2025 Mw7.1 Dingri earthquake is the largest normal‐faulting event in southern Tibetan plateau recorded with near‐field observations. By integrating back‐projection imaging, multi‐point‐source inversion, and finite‐fault modeling, we reveal that the rupture propagated at variable speeds in a cascading manner across a complex conjugate fault
Qi Li +8 more
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Geophysical Research LettersWe report a new model of radially anisotropic crustal and upper mantle structure of the western United States (WUS324) obtained from full waveform inversion of earthquake data. We ran three multiscale inversion stages beyond model WUS256 (Rodgers et al.,
A. J. Rodgers, C. D. Doody, A. Fichtner
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Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract The Hangai Dome in central Mongolia represents one of the most prominent intracontinental uplifts, yet the relative contributions of crustal and mantle dynamics in sustaining its high topography remain unresolved. Here we jointly invert Rayleigh wave dispersion and receiver function data to constrain crustal and uppermost mantle structures ...
Yingkai Wu +4 more
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Seismic Multi-Parameter Full-Waveform Inversion Based on Rock Physical Constraints
Applied SciencesSeismic multi-parameter full-waveform inversion (FWI) integrating velocity and density parameters can fully use the kinematic and dynamic information of observed data to reconstruct underground models. However, seismic multi-parameter FWI is a highly ill-
Cen Cao, Deshan Feng, Jia Tang, Xun Wang
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Review of advances in Martian focal mechanisms
地球与行星物理论评Earthquakes represent dynamic processes in rocky planets where accumulated stress leads to sudden rupture, block movement, and energy release. Investigating their origin mechanisms not only advances our understanding of planetary stress accumulation and ...
Kexu Shi, Weijia Sun
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Imaging paleoslabs in the D″ layer beneath Central America and the Caribbean using seismic waveform inversion. [PDF]
Sci Adv, 2017 Borgeaud AFE +3 more
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Applied SciencesThe seismic image produced by pre-stack depth migration is more accurate and has clearer geological significance than the time image. However, the waveform of the depth-domain seismic image is affected not only by depth-dependent velocity variation but ...
Chengyu Sun, Ruiqian Cai, Zhen’an Yao
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Journal of Marine Science and EngineeringFull waveform inversion (FWI) comprehensively utilizes phase and amplitude information of seismic waves to obtain high-resolution subsurface medium parameter models, applicable to both active-source and passive-source seismic data. Passive-source seismic
Donghao Zhang +4 more
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