Vol. 50, n.1, March 2009
Oxygen isotope composition as a tool for aquifer assessment:
the CAMI-Life project case
O. FLORA, J. DI VARMO, B. STENNI, L. GENONI and A. CARNIEL
Received: July 7, 2007; accepted: August 31, 2007
The stable oxygen isotope composition of 11 wells, 4 pluviometers and 3 rivers are
analysed and discussed in this paper in order to provide information on the recharge
basin of aquifers and on the hydro-geological processes operating on groundwater.
The studied area is situated in the northern part of Pordenone’s plain (NE Italy) and
includes the Cellina - Meduna fan and the “risorgive line”. Samples were collected
once a month with the exception of the main site at the Chions - Torrate locality where
two wells, at a 50 and a 200 m depth, were sampled every two weeks. On the basis of
the results, we identified three areas where aquifers are affected differently by
meteoric water, when percolating through the unsaturated zone and the river water. In
a few cases, only one of the two end members characterizes the groundwater.
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