Environmental tracers and remote sensing for the assessment of groundwater inflows to a river
| Autor: | Wachniew, P., Szostak, R., Zimnoch, M. |
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| Rok vydání: | 2023 |
| Zdroj: | XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
| DOI: | 10.57757/iugg23-3936 |
| Popis: | The ecological status of streams in humid areas is largely controlled by localized and diffuse groundwater inflows that contribute to baseflow and affect stream water temperature and chemistry, including nutrient and contaminant contents. The assessment of groundwater inflows, an issue important for catchment scale water management, can be achieved by a combination of methods that include application of environmental tracers (e.g. stable isotopic composition and temperature of water) and of drone-based sensors (thermal, visible and multispectral imagery). Stable isotopes of water allow for the identification and quantification of groundwater inflows at a reach scale (length of at least several kilometers). The temperature tracer provides point-scale qualitative and quantitative information on groundwater inflows while its application at reach scale requires additional data and application of a heat balance model. Drone-based images are effective in mapping of localized groundwater inflows. An example from the Kocinka River in Southern Poland affected by inflows of nitrate-polluted groundwater shows the complementarity of the above methods in the characterization of groundwater inflows to rivers. The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) |
| Databáze: | OpenAIRE |
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