Dataset description
We provide below the dataset published in Labbe et al. (JoH, 2026) corresponding to an A-DTS experiment carried out on the experimental site of Port-Douvot (Besançon, France), in an alluvial aquifer. The dataset includes:
- Brillouin absolute frequency measurements collected between the 04/04/2023 and the 04/11/2023 in natural groundwater flow conditions along a 700m fiber optic cable using a Brillouin-based sensor (DITEST, Omnisens) according to the experimental setup described in figure 1,
- groundwater temperatures (RBRsolo3 T) over the same period,
- high definition images of an alluvial core sample collected between two piezometers,
- an electrical resistivity tomography profile (Syscal R1+, Iris instrument) acquired during the A-DTS experiment.

The data was acquired in the frame of the AUVERWATCH observatory (AUVERgne WATer CHemistry), which is part of the French network of hydrogeological observatories H+ (http://hplus.ore.fr/en/).
Download links
| Dataset |
|---|
| Brillouin absolute frequency measurements: link Groundwater temperatures: link High definition images of the alluvial core sample: link Electrical resistivity tomography profile: link |
Acknowledgements
Fundings: SENSAAS and GOOFI projects
Contributors:
- Maxime Romanet, UMR CNRS 6174 FEMTO-ST, Université Marie & Louis Pasteur, Besançon, France.
- Jean-Charles Beugnot, UMR CNRS 6174 FEMTO-ST, Université Marie & Louis Pasteur, Besançon, France.
- Hélène Celle, UMR CNRS 6249 Chrono-Environnement, Université Marie & Louis Pasteur, Besançon, France.
- Jordan Labbe, UMR CNRS 6249 Chrono-Environnement, Université Marie & Louis Pasteur, Besançon, France.
