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Fig. 5 Mixing modeling of water in the Karup River system.
Mixing modeling of water in the Karup River system. Three-component mixing of the inverse Sr concentration and 87Sr/86Sr ratios of water from the Karup River system (samples marked with yellow dots in Fig. 3). Hydrochemical end-member values for Kompedal surface water and groundwater are weighted averages of analyses, with the shaded area representing the 2σ uncertainty. The end-member value for agricultural runoff is calculated on the basis of the amounts of lime, manure, and fertilizer applied to the fields by local farmers (see the Supplementary Materials) and average runoff and rainfall values, and the shaded area around the points represents the estimated uncertainty in the values. The numbers at each data point indicate the distance in kilometer from the headwaters of Vallerbæk stream. Erik Thomsen, and Rasmus Andreasen Sci Adv 2019;5:eaav8083 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
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