The distribution of 210Pb and 210Po in the surface waters of the Pacific Ocean |
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| Authors: | Y Nozaki J Thomson KK Turekian |
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| Institution: | Department of Geology and Geophysics, Yale University, New Haven, Conn. 06520, USA |
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| Abstract: | By modelling the observed distribution of210Pb and210Po in surface waters of the Pacific, residence times relative to particulate removal are determined. For the center of the North Pacific gyre these are τPo = 0.6years andτPb = 1.7years. The surface ocean τPb is determined by particulate transport rather than plankton settling. The fact that it is about two orders of magnitude smaller than τPb for the deep ocean implies a sharp change in the adsorptive quality of particles during descent through the water column. |
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