Articles | Volume 26, issue 19
https://doi.org/10.5194/hess-26-4933-2022
https://doi.org/10.5194/hess-26-4933-2022
Research article
 | 
07 Oct 2022
Research article |  | 07 Oct 2022

A method for predicting hydrogen and oxygen isotope distributions across a region's river network using reach-scale environmental attributes

Bruce D. Dudley, Jing Yang, Ude Shankar, and Scott L. Graham

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Cited articles

Alexander, R. B., Elliott, A. H., Shankar, U., and McBride, G. B.: Estimating the sources and transport of nutrients in the Waikato River Basin, New Zealand, Water Resour. Res., 38, 4-1–4-23, https://doi.org/10.1029/2001WR000878, 2002. 
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Belachew, D. L., Leavesley, G., David, O., Patterson, D., Aggarwal, P., Araguas, L., Terzer, S., and Carlson, J.: IAEA Isotope-enabled coupled catchment–lake water balance model, IWBMIso: description and validation, Isotop. Environ. Health Stud., 52, 427–442, https://doi.org/10.1080/10256016.2015.1113959, 2016. 
Bowen, G. J.: Statistical and geostatistical mapping of precipitation water isotope ratios, in: Isoscapes, Springer, 139–160, ISBN 978-90-481-3354-3, 2010. 
Bowen, G. J. and Revenaugh, J.: Interpolating the isotopic composition of modern meteoric precipitation, Water Resour. Res., 39, 1299, https://doi.org/10.1029/2003WR002086, 2003. 
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Stable isotope ratios (isotope values) of surface water reflect hydrological pathways, mixing processes, and atmospheric exchange within catchments. We used a water-balance-based mapping method, which represents patterns of surface flow and mixing, and added a regression-based correction step using catchment environmental characteristics to map water isotope ratios across all the rivers of New Zealand.