Oceanic Residence Times of Dissolved Beryllium and Aluminum Deduced from Cosmogenic Tracers 10 Be and 26 Al
- 15 September 1978
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 201 (4360) , 1016-1017
- https://doi.org/10.1126/science.201.4360.1016
Abstract
The residence times of the soluble fractions of beryllium and aluminum in seawater are estimated to be 1500 years or more. These residence times are estimated from a comparison of the annual deposition rates of cosmogenic beryllium-10 and aluminum-26 with the concentrations of beryllium-10 and aluminum-26 in seawater estimated from the specific activities of these radionuclides in an authigenic mineral assembly such as a manganese nodule. These residence times are greater by an order of magnitude than the mean residence times of beryllium and aluminum estimated from the geochemical balance.Keywords
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