Gas Exchange Rates for Three Closed-Basin Lakes

Long term monitoring of the14C:12Cratio in three closed-basin lakes in the western United States has resulted in reliable estimates of the mean CO2invasion rates. When normalized to sea level pressure the results are 6 mol· m-2 · yr-1 for Pyramid Lake, 17 for Walker Lake, and 38 for Mono Lake. Excep...

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Veröffentlicht in:	Limnol. Oceanogr.; (United States) 1980-09, Vol.25 (5), p.789-796
Hauptverfasser:	Peng, Tsung-Hung, Broecker, Wallace
Format:	Artikel
Sprache:	eng
Schlagworte:	BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES CARBON 12 CARBON 14 CARBON COMPOUNDS CARBON DIOXIDE CARBON ISOTOPES CARBON OXIDES CHALCOGENIDES ENVIRONMENTAL SCIENCES EVEN-EVEN NUCLEI Exchange rates Film thickness ISOTOPE RATIO ISOTOPES LAKES LIGHT NUCLEI MONITORING NORTH AMERICA NUCLEI OXIDES OXYGEN COMPOUNDS PH VALUE Radiocarbon RADIOISOTOPES River water Spring water STABLE ISOTOPES Surface water SURFACE WATERS USA VELOCITY WIND Wind tunnels Wind velocity YEARS LIVING RADIOISOTOPES 520200 > Environment, Aquatic-- Chemicals Monitoring & Transport-- (-1989)
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Beschreibung
Zusammenfassung:	Long term monitoring of the14C:12Cratio in three closed-basin lakes in the western United States has resulted in reliable estimates of the mean CO2invasion rates. When normalized to sea level pressure the results are 6 mol· m-2 · yr-1 for Pyramid Lake, 17 for Walker Lake, and 38 for Mono Lake. Except for Mono Lake, these bomb14C-derived invasion rates are consistent with those derived from the distribution of natural radiocarbon. The big difference in the invasion rates estimated for Mono Lake by the two methods is attributed to the influx of14C-free spring waters to the lake. Possible causes for the difference in CO2invasion rates among the three lakes are wind velocity, salinity, and pH.
ISSN:	0024-3590
DOI:	10.4319/lo.1980.25.5.0789