Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 29, issue 13
Articles | Volume 29, issue 13
https://doi.org/10.5194/hess-29-2997-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-2997-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29, issue 13
Research article
 | 
16 Jul 2025
Research article |  | 16 Jul 2025

Self-potential signals related to tree transpiration in a Mediterranean climate

Kaiyan Hu, Bertille Loiseau, Simon D. Carrière, Nolwenn Lesparre, Cédric Champollion, Nicolas K. Martin-StPaul, Niklas Linde, and Damien Jougnot

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Short summary
This study explores the potential of the electrical self-potential (SP) method, a passive geophysical technique, to provide additional insights into tree transpiration rates. We measured SP and sap velocity in three tree species over a year in a Mediterranean climate. Results indicate SP may characterize transpiration rates, especially during dry seasons. Additionally, the electrokinetic coupling coefficients of these trees align with values typically found in porous geological media.
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