Petrophysical Joint Inversion of Electrical and Seismic Tomographic Data Including Shear Waves

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ID: 328663
2026
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Abstract
Summary Petrophysical characterization in near-surface environments remains challenging due to the high heterogeneity, sharp contrasts in fluid content, and complex hydrogeological structures. This work introduces a novel petrophysical joint inversion (PJI) framework that integrates SH-wave seismic refraction tomography (SRT) with electrical resistivity tomography (ERT) and, optionally, time-domain induced polarization (IP) data, replacing the conventional approach based on P-wave velocity and Wyllie’s equation with the Castagna relation for S-wave velocity. By reducing sensitivity to pore-fluid effects, the framework preserves robust saturation estimates while significantly improving porosity reconstruction in both its spatial distribution and absolute values. A synthetic example and two field case studies with contrasting hydrogeological layering demonstrate the capability of our method to provide physically consistent, fully quantitative, and high-resolution characterization of complex near-surface scenarios, extending the scope of PJI beyond classical applications. Additionally, in settings where the IP contribution is limited, the strong sensitivity of S-waves to site lithology allows for a comprehensive characterization without including IP data, which are required in traditional approaches to fully characterize complex scenarios, thereby reducing survey costs and overall complexity.
Reference Key
openalex_W7213460818 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Guido Penta de Peppo, Michele Cercato, Giorgio De Donno
Journal geophysical journal international
Year 2026
DOI
10.1093/gji/ggag381
URL
https://doi.org/10.1093/gji/ggag381
Keywords Keywords not found

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