Deep-water renewal in Lake Issyk-Kul

Martin K. Vollmer; Ray F. Weiss; Peter Schlosser; Robert T. Williams

doi:10.1029/2002GL014763

Deep-water renewal in Lake Issyk-Kul

Martin K. Vollmer, Ray F. Weiss, Peter Schlosser, Robert T. Williams

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The deep-water renewal rates of Lake Issyk-Kul are studied using the time-dependent anthropogenically produced tracers sulfur hexafluoride (SF₆), chlorofluorocarbons (CFCs) and tritium-helium-3. SF₆ and the CFCs are used to calibrate a mixing model from which the vertical age distribution is calculated and found to be comparable to the SF₆ apparent ages. Based on this model, the mean age of the water below 100 m depth is 6.1 yrs. The mean oxygen consumption rate for the same depth range is 6.4 μmol kg^-1 yr^-1 and the mean remineralization rates for nitrate, phosphate and silicate are 0.53, 0.003 and 0.67 μmol kg^-1 yr^-1, respectively.

Original language	English (US)
Article number	1283
Journal	Geophysical Research Letters
Volume	29
Issue number	8
DOIs	https://doi.org/10.1029/2002GL014763
State	Published - Apr 15 2002
Externally published	Yes

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

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title = "Deep-water renewal in Lake Issyk-Kul",

abstract = "The deep-water renewal rates of Lake Issyk-Kul are studied using the time-dependent anthropogenically produced tracers sulfur hexafluoride (SF6), chlorofluorocarbons (CFCs) and tritium-helium-3. SF6 and the CFCs are used to calibrate a mixing model from which the vertical age distribution is calculated and found to be comparable to the SF6 apparent ages. Based on this model, the mean age of the water below 100 m depth is 6.1 yrs. The mean oxygen consumption rate for the same depth range is 6.4 μmol kg-1 yr-1 and the mean remineralization rates for nitrate, phosphate and silicate are 0.53, 0.003 and 0.67 μmol kg-1 yr-1, respectively.",

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T1 - Deep-water renewal in Lake Issyk-Kul

AU - Vollmer, Martin K.

AU - Weiss, Ray F.

AU - Schlosser, Peter

AU - Williams, Robert T.

PY - 2002/4/15

Y1 - 2002/4/15

N2 - The deep-water renewal rates of Lake Issyk-Kul are studied using the time-dependent anthropogenically produced tracers sulfur hexafluoride (SF6), chlorofluorocarbons (CFCs) and tritium-helium-3. SF6 and the CFCs are used to calibrate a mixing model from which the vertical age distribution is calculated and found to be comparable to the SF6 apparent ages. Based on this model, the mean age of the water below 100 m depth is 6.1 yrs. The mean oxygen consumption rate for the same depth range is 6.4 μmol kg-1 yr-1 and the mean remineralization rates for nitrate, phosphate and silicate are 0.53, 0.003 and 0.67 μmol kg-1 yr-1, respectively.

AB - The deep-water renewal rates of Lake Issyk-Kul are studied using the time-dependent anthropogenically produced tracers sulfur hexafluoride (SF6), chlorofluorocarbons (CFCs) and tritium-helium-3. SF6 and the CFCs are used to calibrate a mixing model from which the vertical age distribution is calculated and found to be comparable to the SF6 apparent ages. Based on this model, the mean age of the water below 100 m depth is 6.1 yrs. The mean oxygen consumption rate for the same depth range is 6.4 μmol kg-1 yr-1 and the mean remineralization rates for nitrate, phosphate and silicate are 0.53, 0.003 and 0.67 μmol kg-1 yr-1, respectively.

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Deep-water renewal in Lake Issyk-Kul

Abstract

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