Thèse de doctorat : Université de Neuchâtel, 2018.
Understanding the recharge mechanisms for karst aquifers is of great importance because these aquifers are relied upon by a quarter of Earth’s population, and because their recharge and discharge dynamics are often strongly coupled. Given this coupling, karst groundwater resources are inherently susceptible to surface processes such as climate, where the timing and volume of water infiltration...
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Thèse de doctorat : Université de Neuchâtel, 2017.
This thesis aims at characterizing the sedimentary processes taking place in the karst aquifer of Milandre (Switzerland) both by direct observation inside the conduit network and through numerical modeling. A physics based pipe flow model of the downstream part of the karst system is developed on the basis of measurements of hydraulic heads, flow rates and flow velocities performed in the...
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Thèse de doctorat : Université de Neuchâtel, 2017.
Caves are important since they are preferential paths for groundwater flow. Knowledge of caves or karst is essential for proper management of water resources, but the exploration of caves is a major challenge. An alternative to study caves and their structure is to simulate the processes related to cave growth. The motivation of this thesis is to study large karst networks in the region of...
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Thèse de doctorat : Université de Neuchâtel, 2007 ; Th.1985.
Numerous studies in unconsolidated aquifers have shown that natural attenuation, mainly due to biodegradation, can substantially reduce the contaminant mass in an aquifer. Much less is known about the relevance of natural attenuation in karst aquifers. This project investigated the potential for attenuation of dissolved compounds by biodegradation in the karst unsaturated zone. To what extent...
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Thèse de doctorat : Université de Neuchâtel, 1999 ; 1445.
Les aquifères karstiques sont des systèmes très complexes, l'hétérogénéité spatiale de leurs paramètres hydrauliques (perméabilités, potentiels hydrauliques, coefficients d'emmagasinement) en rend l'étude difficile. Les caractéristiques structurales et hydrodynamiques des aquifères karstiques sont principalement étudiées par l'intermédiaire de l'analyse des réponses globales...
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Thèse de doctorat : Université de Neuchâtel : 2003 ; 1699.
Karst aquifers represent an important groundwater resource world-wide. They are highly vulnerable to contamination due to fast transport through the system and limited attenuation of contaminants. The two main hydrogeological approaches developed for studying flow and transport are: inference of the system structure from karst spring hydrographs and chemographs; numerical modelling of flow and...
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Thèse de doctorat : Université de Neuchâtel : 2003 ; 1724.
This thesis presents a method for characterizing flow systems in karst aquifers by acquiring quantitative information about the geometric and hydraulic parameters of a karst conduit network from spring hydrograph analysis. The investigation method applied consisted of constructing simple conceptual models of karst systems, and deducing analytical formulae describing the connection between aquifer...
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