Université de Neuchâtel

The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India

Perrin, J ; Ahmed, S ; Hunkeler, Daniel

In: Hydrogeology Journal, 2011, vol. 19, no. 6, p. 1189-1201

Crystalline aquifers of semi-arid southern India represent a vital water resource for farming communities. A field study is described that characterizes the hydro-dynamic functioning of intensively exploited crystalline aquifers at local scale based on detailed well monitoring during one hydrological year. The main results show large water-table fluctuations caused by monsoon recharge and...

Université de Neuchâtel

Numerical modelling of Alpine deep flow systems: a management and prediction tool for an exploited geothermal reservoir (Lavey-les-Bains, Switzerland)

Sonney, Romain ; Vuataz, François-David

In: Hydrogeology Journal, 2009, vol. 17, no. 3, p. 601-616

Le site géothermal de Lavey-les-Bains (Suisse) est un système alpin d’écoulement profond dans des terrains cristallins fracturés. Les analyses acquises depuis 1973 sur les eaux souterraines montrent un processus de mélange entre une composante profonde et chaude (68°C et TDS 1.4 g/L) et une eau froide peu profonde. La production sur le nouveau puits profond P600, réalisé en 1997, a...

Université de Neuchâtel

Hydraulic testing of low-permeability formations: A case study in the granite of Cadalso de los Vidrios, Spain

Mejías, Miguel ; Renard, Philippe ; Glenz, Damian

In: Engineering Geology, 2009, vol. 107, no. 3-4, p. 88-97

In recent years, the study of low-permeability geological formations has undergone considerable development. This is mainly due to the use of natural geological barriers to confine waste disposals, preventing leaking water from bringing contaminants into contact with the biosphere and the groundwater resources. In that context, the Spanish Geological Survey (IGME, Spanish acronym), supported...