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Université de Neuchâtel

Groundwater recharge dynamics by snowmelt

Meeks, Jessica ; Hunkeler, Daniel (Dir.)

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...

Université de Neuchâtel

Hydrogeological characterization of karst aquifers in Switzerland using a pragmatic approach

Malard, Arnauld ; Jeannin, Pierre-Yves (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

Recent studies reveal that karst aquifers represent a significant part of the Swiss groundwater reserve (120 km3) and resource (8.4 km3/year), although they only extend over 20% of the territory. On the one hand, high infiltration rates and large permeabilities of karstified rocks make karst aquifers highly interesting for water management. On the other hand, karst...

Université de Neuchâtel

Advances in characterizing surface water-groundwater interactions : combining unconventional data with complex, fully-integrated models

Schilling, Oliver S. ; Brunner, Philip (Dir.) ; Hunkeler, Daniel (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2017.

The characterization and simulation of the interactions between surface water and groundwater require observations of hydrological state variables and flow processes. While the latest generation of physically-based flow models allows the integrated simulation of all relevant hydrological processes, the current modelling practice is not adequate to provide reliable predictions. Numerous studies...

Université de Neuchâtel

On the use of multiple-point statistics to improve groundwater flow modeling in karst aquifers : A case study from the Hydrogeological Experimental Site of Poitiers, France

Le Coz, M ; Bodin, J ; Renard, Philippe

In: Journal of Hydrology, 2017, vol. 545, p. 109-119

Limestone aquifers often exhibit complex groundwater flow behaviors resulting from depositional heterogeneities and post-lithification fracturing and karstification. In this study, multiple-point statistics (MPS) was applied to reproduce karst features and to improve groundwater flow modeling. For this purpose, MPS realizations were used in a numerical flow model to simulate the responses to...

Université de Neuchâtel

Isotope fractionation due to diffusion and sorption of chlorinated hydrocarbons and its implications for identifying reactive processes in aquifer - aquitard systems

Wanner, Philipp ; Hunkeler, Daniel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2016.

Chlorinated hydrocarbons are anthropogenic contaminants, which are known to be possibly carcinogenic to humans. Although the peak production of chlorinated hydrocarbons in the 1970ties was followed by a dramatic decrease in the subsequent decades, chlorinated hydrocarbons are still frequently detected in aquifer systems demonstrating their long-term persistence. When chlorinated hydrocarbons are...