9 November: PhD thesis of Arnaud Watlet

On 9 November 2017, Arnaud Watlet will defend his PhD thesis dedicated to the de FNRS KARAG project of Rochefort.
Arnaud will present 4 years of results on the saturated and non-saturated zones of the karst aquifers.
The jury will be composed of the following members:
Prof. Olivier Kaufman, Université de Mons
Dr. Michel Van Camp, Observatoire Royal de Belgique
Pr Jean-Marc Baele, Université de Mons
Pr Thierry Camelbeeck, Observatoire Royal de Belgique
Pr Konstantinos Chalikakis, Université d’Avignon
Pr Cédric Champollion, Université de Montpellier
Pr Olivier Francis, Université de Luxembourg
Pr Pascal Goderniaux, Université de Mons
The dissertation defense will take place at 15 pm at U. Mons, Salle Académique, Bd Dolez, 31 (2e étage), 7000 Mons. The defense is public.
Aucun texte alternatif disponible.

Rochefort Cave lab on TV

The underground work of the KARAG team was presented on Belgium national televion (La Une) 28th of September at 12:40 PM! The small documentary focuses on the Rochefort cave laboratory and the measurements made in the vadose zone of the Givetian karst aquifer (click on the picture to watch the video).

Don’t miss this opportunity to discover our work 😉



A first PhD for KARAG

Amaël Poulain presented his PhD thesis last week, in the framework of the KARAG project.

Follow this link to see the Prezi presentation : https://prezi.com/view/KK6w99xScFwkSzY8t7ln/

The thesis file may be downloaded at the following URL : https://documents.unamur.be/index.php/s/NyWlXUuYjK8exeW

Remember that Arnaud Watlet will also present his PhD thesis in Geophysics this year. Stay tuned for more information !


Phd thesis defense

On the 6th of September 2017, Amaël Poulain will present his PhD thesis in the framework of the KARAG project. He will present 4 years of research about phreatic and vadose zones hydrogeology in karst aquifers and specifically a focus on the Lomme Karst System in Rochefort.

The thesis jury :

  • Prof. Vincent Hallet (University oy Namur – Promoter)
  • Prof. Johan Yans (University of Namur – President)
  • Prof. Olivier Kaufmann (University of Mons)
  • Prof. Marnik Vanclooster (Catholic University of Louvain)
  • Prof. Pascal Goderniaux (University of Mons)
  • Prof. Hervé Jourde (University of Montpellier – France)

The defense will start at 4PM in the M01 room (Faculty of Medicine – University of Namur). Access via Place du Palais de justice (lien Street View)

Abstract in french

The defense is public

Ernest du Bois Doctorate Award for A. Watlet and KARAG Project

Arnaud Watlet, one of our PhD students, has recently received the renowned Ernest du Bois Doctorate Award from the King Baudouin Foundation. The Ernest du Bois PhD prize aims to encourage young engineers conducting research in the field of water to focus on the issues of water availability for human populations around the world, protection of resources, pollution problems, and treatment techniques. This therefore perfectly corresponds to the KARAG project goals. The 20.000€ PhD Prize will considerably help A. Watlet to finalize its PhD thesis. Good luck to him!

A new Ph.D. student for KARAG

02 January 2017:

A new Ph.D. student joints the KARAG team: Ir. Damien Delforge. The supervisors are Prof. Marnik Vanclooster (UCL, Earth and Life Institute/Environmental Sciences (ELI-e)) and Dr. Michel Van Camp (Royal Observatory of Belgium, Seismology-Gravimetry). This project is supported by the Fund for Scientific Research FNRS-FRIA.

The objective of the project is to improve gravity signal processing and karst systems modelling through the use of novel data mining techniques, derived from chaos theory, known as convergent cross mapping (CCM). CCM is a statistical method to elucidate cause-effect relationships between multiple time series that seek to resolve the problem that correlation does not imply causation. Regarding the uniqueness and the complex non-linear dynamics of karst systems, the main underlying assumptions are the following: (i) data-driven tools derived from the chaos theory and CCM appears to be relevant to investigate both the relationship between the gravimetric signal and the monitored environmental variables and the hydrological behaviour of a karst system; (ii) using CCM analysis, a framework can be built to assess the realism of a hydrological model structure in complex hydrologic systems such as karst systems; and (iii) the resulting model structure can lead to a better prediction in water storage changes (WSC) and therefore to a better interpretation of the gravity signal.

Based on this assumptions, this research aims at applying advanced causal analysis to  characterize the relationships between gravity signals and the locally monitored environmental variables and to assess what are the dominant hydrological processes involved in a complex Lomme karst system.

KARAG at the AGU Fall meeting 2016, San Francisco

  • Watlet, A., Kaufmann, O., Van Camp M., Triantafyllou, A., Fadel Cisse, M., Quinif, Y., P. Meldrum, P.B. Wilkinson, J.E. Chambers, Electrical Resistivity Tomography monitoring reveals groundwater storage in a karst vadose zone, AGU Fall meeting (poster), 12-16 Dec 2016.
  • Van Camp M., Watlet, A., Poulain, A., Hallet, V., Rochez, G., Quinif, Y., Meus, P., Kaufmann, O., Francis O., Continuous gravimetric monitoring as an integrative tool for exploring hydrological processes in the Lomme Karst System (Belgium), AGU Fall meeting (poster), 12-16 Dec 2016.