Articles | Volume 25, issue 3
Hydrol. Earth Syst. Sci., 25, 1211–1228, 2021
https://doi.org/10.5194/hess-25-1211-2021
Hydrol. Earth Syst. Sci., 25, 1211–1228, 2021
https://doi.org/10.5194/hess-25-1211-2021

Research article 10 Mar 2021

Research article | 10 Mar 2021

Triple oxygen isotope systematics of evaporation and mixing processes in a dynamic desert lake system

Claudia Voigt et al.

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Clim. Past Discuss., https://doi.org/10.5194/cp-2021-34,https://doi.org/10.5194/cp-2021-34, 2021
Revised manuscript accepted for CP
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Cited articles

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Alexandre, A., Landais, A., Vallet-Coulomb, C., Piel, C., Devidal, S., Pauchet, S., Sonzogni, C., Couapel, M., Pasturel, M., Cornuault, P., Xin, J., Mazur, J.-C., Prié, F., Bentaleb, I., Webb, E., Chalié, F., and Roy, J.: The triple oxygen isotope composition of phytoliths as a proxy of continental atmospheric humidity: insights from climate chamber and climate transect calibrations, Biogeosciences, 15, 3223–3241, https://doi.org/10.5194/bg-15-3223-2018, 2018. 
Alexandre, A., Webb, E., Landais, A., Piel, C., Devidal, S., Sonzogni, C., Couapel, M., Mazur, J.-C., Pierre, M., Prié, F., Vallet-Coulomb, C., Outrequin, C., and Roy, J.: Effects of leaf length and development stage on the triple oxygen isotope signature of grass leaf water and phytoliths: insights for a proxy of continental atmospheric humidity, Biogeosciences, 16, 4613–4625, https://doi.org/10.5194/bg-16-4613-2019, 2019. 
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Evaporation trends in the stable isotope composition (18O/16O, 17O/16O, 2H/1H) of throughflow ponds in a hydrologically complex and seasonally dynamic lake system can be reliably predicted by the classic Craig–Gordon isotope evaporation model. We demonstrate that the novel 17O-excess parameter is capable of resolving different types of evaporation with and without recharge and of identifying mixing processes that cannot be resolved using the classic δ2H–δ18O system alone.