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Articles | Volume 16, issue 10
Articles | Volume 16, issue 10
https://doi.org/10.5194/se-16-1227-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-16-1227-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 10
Research article
 | 
29 Oct 2025
Research article |  | 29 Oct 2025

Revisiting Gassmann-type relationships within Biot poroelastic theory

Yury Alkhimenkov and Yury Y. Podladchikov

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Short summary
We present a thermodynamically consistent derivation of extended Biot poroelasticity, showing that Gassmann, Brown–Korringa, and related models emerge as special cases. Our formulation clarifies the conditions under which Gassmann’s relation holds and extends it by incorporating off-diagonal Hessian terms. Symbolic Maple code with consistency checks ensures full transparency, reproducibility, and accessibility for further research.
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