Geological structure, recharge processes and underground drainage of a glacierised karst aquifer system, Tsanfleuron-Sanetsch, Swiss Alps

Détails

ID Serval
serval:BIB_D78C16073DD9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Geological structure, recharge processes and underground drainage of a glacierised karst aquifer system, Tsanfleuron-Sanetsch, Swiss Alps
Périodique
Hydrogeology Journal
Auteur(s)
Gremaud V., Goldscheider N., Savoy L., Favre G., Masson H.
ISSN-L
1431-2174
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
17
Pages
1833-1848
Langue
anglais
Résumé
The relationships between stratigraphic and tectonic setting, recharge
processes and underground drainage of the glacierised karst aquifer
system `Tsanfleuron-Sanetsch' in the Swiss Alps have been studied by
means of various methods, particularly tracer tests (19 injections). The
area belongs to the Helvetic nappes and consists of Jurassic to
Palaeogene sedimentary rocks. Strata are folded and form a regional
anticlinorium. Cretaceous Urgonian limestone constitutes the main karst
aquifer, overlain by a retreating glacier in its upper part. Polished
limestone surfaces are exposed between the glacier front and the end
moraine of 1855/1860 (Little Ice Age); typical alpine karrenfields can
be observed further below. Results show that (1) large parts of the area
are drained by the Glarey spring, which is used as a drinking water
source, while marginal parts belong to the catchments of other springs;
(2) groundwater flow towards the Glarey spring occurs in the main
aquifer, parallel to stratification, while flow towards another spring
crosses the entire stratigraphic sequence, consisting of about 800 m of
marl and limestone, along deep faults that were probably enlarged by
mass movements; (3) the variability of glacial meltwater production
influences the shape of the tracer breakthrough curves and,
consequently, flow and transport in the aquifer.
Création de la notice
07/12/2012 15:51
Dernière modification de la notice
20/08/2019 16:57
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