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Rapid deep-water renewal in Lake Issyk-Kul (Kyrgyzstan) indicated by transient tracers

Rapid deep-water renewal in Lake Issyk-Kul (Kyrgyzstan) indicated by transient tracers

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HOFER, Markus, Frank PEETERS, Werner AESCHBACH-HERTIG, Matthias S. BRENNWALD, Johannes HOLOCHER, David M. LIVINGSTONE, Vladimir ROMANOVSKI, Rolf KIPFER, 2002. Rapid deep-water renewal in Lake Issyk-Kul (Kyrgyzstan) indicated by transient tracers. In: Limnology and Oceanography. 47(4), pp. 1210-1216. ISSN 0024-3590. eISSN 1939-5590

@article{Hofer2002Rapid-8079, title={Rapid deep-water renewal in Lake Issyk-Kul (Kyrgyzstan) indicated by transient tracers}, year={2002}, number={4}, volume={47}, issn={0024-3590}, journal={Limnology and Oceanography}, pages={1210--1216}, author={Hofer, Markus and Peeters, Frank and Aeschbach-Hertig, Werner and Brennwald, Matthias S. and Holocher, Johannes and Livingstone, David M. and Romanovski, Vladimir and Kipfer, Rolf} }

Aeschbach-Hertig, Werner Rapid deep-water renewal in Lake Issyk-Kul (Kyrgyzstan) indicated by transient tracers Kipfer, Rolf Brennwald, Matthias S. 2002 2011-03-24T17:39:46Z Hofer, Markus Holocher, Johannes Peeters, Frank 2011-03-24T17:39:46Z Aeschbach-Hertig, Werner deposit-license Livingstone, David M. Romanovski, Vladimir Peeters, Frank Kipfer, Rolf Brennwald, Matthias S. application/pdf First publ. in: Limnology and Oceanography 47 (2002), 4, pp. 1210-1216 Simultaneous profiles of the transient tracers sulfur hexafluoride (SF6), 3H-3He, and the chlorofluorocarbons CFC-11 and CFC-12 were measured in Lake Issyk-Kul, a large, deep lake in Kyrgyzstan. Apparent water ages derived from these measurements suggest rapid mixing, with a deepwater renewal rate > 10% yr21 at 650 m depth. SF6 and 3H-3He ages agree reasonably well, whereas CFC ages are significantly greater. The discrepancy is explained by the nonlinear relationship between tracer age and tracer concentration and by the flattening of the atmospheric growth curves for CFCs. Novel to physical limnology is the application of SF6 dating, which proves to be an excellent tool for the study of mixing in lakes, complementing 3H-3He and CFC dating techniques. Holocher, Johannes Romanovski, Vladimir eng Livingstone, David M. Hofer, Markus

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