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| Titel |
Towards improved instrumentation for assessing river-groundwater interactions in a restored river corridor |
| VerfasserIn |
P. Schneider, T. Vogt, M. Schirmer, J. Doetsch, N. Linde, N. Pasquale, P. Perona, O. A. Cirpka |
| 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 ; 15, no. 8 ; Nr. 15, no. 8 (2011-08-16), S.2531-2549 |
| Datensatznummer |
250012925
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| Publikation (Nr.) |
 copernicus.org/hess-15-2531-2011.pdf |
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| Zusammenfassung |
| River restoration projects have been launched over the last two decades to
improve the ecological status and water quality of regulated rivers. As most
restored rivers are not monitored at all, it is difficult to predict
consequences of restoration projects or analyze why restorations fail or are
successful. It is thus necessary to implement efficient field assessment
strategies, for example by employing sensor networks that continuously
measure physical parameters at high spatial and temporal resolution. This
paper focuses on the design and implementation of an instrumentation
strategy for monitoring changes in bank filtration, hydrological
connectivity, groundwater travel time and quality due to river restoration.
We specifically designed and instrumented a network of monitoring wells at
the Thur River (NE Switzerland), which is partly restored and has been mainly
channelized for more than 100 years. Our results show that bank
filtration – especially in a restored section with alternating riverbed
morphology – is variable in time and space. Consequently, our monitoring network has been adapted in
response to that variability. Although not available at our test site, we
consider long-term measurements – ideally initiated before and continued
after restoration – as a fundamental step towards predicting consequences
of river restoration for groundwater quality. As a result, process-based
models could be adapted and evaluated using these types of high-resolution
data sets. |
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