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Seasonal variations of Pb-210 and Po-210 concentrations in an oligotrophic lakeIn order to examine spatial and temporal variability during the seasonal cycle of the oligotrophic Crystal Lake, Wisconsin, vertical distribution measurements of Pb-210 and Po-210 in both the dissolved and particulate phases were conducted. Mass balance considerations indicate that the removal rates of the two isotopes from the water column to the sediment vary temporally by nearly an order of magnitude. The mean removal residence time was estimated to be 0.095 yr for Pb-210 and 0.26 yr for Po-210, suggesting a difference in the extent of water column recycling. Calculations indicate a cyclic response of the water column Po-210 inventory which corresponds to successive time periods when there were net losses or gains; this response may be due to rapid biological removal and subsequent release from the sediment of freshly deposited Po-210.
Document ID
19850034327
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Talbot, R. W.
(NASA Langley Research Center Atmospheric Sciences Div., Hampton, VA; Wisconsin, University, Madison, WI, United States)
Andren, A. W.
(Wisconsin, University Madison, WI, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 48
ISSN: 0016-7037
Subject Category
Environment Pollution
Accession Number
85A16478
Funding Number(s)
CONTRACT_GRANT: EPA-R-806878-01-06
Distribution Limits
Public
Copyright
Other

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