NATURALLY OCCURRING AND INTRODUCED TRACERS FOR EXAMINING WATER PATHWAYS IN URBAN ENVIRONMENTS
Naturally occurring stable isotopes of water and introduced water tracers allow researchers to examine water pathways and better understand spatial and temporal variability in water sources. Trends in naturally occurring stable isotope values can function not only as a tracer for precipitation patte...
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UKnowledge
2022
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| Online Access: | https://uknowledge.uky.edu/ees_etds/95 https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1105&context=ees_etds |
| Summary: | Naturally occurring stable isotopes of water and introduced water tracers allow researchers to examine water pathways and better understand spatial and temporal variability in water sources. Trends in naturally occurring stable isotope values can function not only as a tracer for precipitation patterns and moisture recycling but also as a confirmation of municipal data. Additionally, these data can provide an early signal for the effects of climate change on these sources, reducing uncertainty from physical measurements. To further assess water pathways, introduced tracers can be used to investigate surface and below ground surface flow for streams and rivers. In chapter 2, stable isotope values from collected precipitation in Kyiv (Ukraine) and Cherkasy (Ukraine) were compared with published 3H data for Kyiv from the year 2000. These data show an influence of the North Atlantic Oscillation (NAO) and provide information about processes affecting precipitation along the storm trajectory. The ????18O values also show a correlation with temperature, indicating that precipitation patterns may be affected by the rising temperatures in the region, as predicted by recent regional studies using Representative Concentration Pathway scenarios. When compared to backtracked storm trajectory and NAO data, clear relationships emerged between water isotope ratios, storm paths, and likely moisture recycling. Overall, ????2H, ????18O, 3H, and storm trajectory data provide more regional information on water vapor processes, improving climate-change-driven precipitation forecasts in Ukraine. In chapter 3, tap water, surface water, and groundwater were collected over 14 months in Kyiv and nearby Boryspil, Brovary, and Boyarka. Stable isotope values from the tap water for each district in Kyiv show a general seasonal trend in water sources, with more groundwater used in the supply in the winter for most districts. Spatially, groundwater use increases from south to north in the left-bank districts in Kyiv city and groundwater use generally ... |
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