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| Titel |
Vulnerability of groundwater resources to interaction with river water in a boreal catchment |
| VerfasserIn |
A. Rautio, A.-L. Kivimäki, K. Korkka-Niemi, M. Nygård, V.-P. Salonen, K. Lahti, H. Vahtera |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 19, no. 7 ; Nr. 19, no. 7 (2015-07-02), S.3015-3032 |
| Datensatznummer |
250120758
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| Publikation (Nr.) |
 copernicus.org/hess-19-3015-2015.pdf |
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| Zusammenfassung |
| A low-altitude aerial infrared (AIR) survey was conducted to identify
hydraulic connections between aquifers and rivers and to map spatial
surface temperature patterns along boreal rivers. In addition, the stable
isotopic compositions (δ18O, δD), dissolved silica
(DSi) concentrations and electrical conductivity of water in combination
with AIR data were used as tracers to verify the observed groundwater
discharge into the river system in a boreal catchment. Based on low
temperature anomalies in the AIR survey, around 370 groundwater discharge
sites were located along the main river channel and its tributaries (203 km
altogether). On the basis of the AIR survey, the longitudinal temperature
patterns of the studied rivers differed noticeably. The stable isotopes and
DSi composition revealed major differences between the studied rivers. The
groundwater discharge locations identified in the proximity of 12 municipal water
intake plants during the low-flow seasons should be considered as potential
risk areas for water intake plants during flood periods (groundwater quality
deterioration due to bank infiltration), and should be taken under
consideration in river basin management under changing climatic situations. |
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