Deep-water renewal in Lake Issyk-Kul

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

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


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 languageEnglish (US)
Article number1283
JournalGeophysical Research Letters
Issue number8
StatePublished - Apr 15 2002
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)


Dive into the research topics of 'Deep-water renewal in Lake Issyk-Kul'. Together they form a unique fingerprint.

Cite this