Radionuclides measured on water bottle samples, supplement to: Geibert, Walter; Rutgers van der Loeff, Michiel M; Hanfland, Claudia; Dauelsberg, Hans-Jürgen (2002): Actinium-227 as a Deep-Sea Tracer: Sources, Distribution and Applications. Earth and Planetary Science Letters, 198(1-2), 147-165

Walter Geibert, Michiel M Rutgers van der Loeff, Claudia Hanfland & Hans-Jürgen Dauelsberg
Actinium is one of the rarest naturally occurring elements on earth. We measured its longest-lived isotope 227Ac (half-life 21.77 yr) for the first time in the water column of the Southeast Pacific, the Central Arctic, the Antarctic Circumpolar Current (ACC) and the Weddell Gyre (WG). Besides the profile in the Southeast Pacific, which confirms earlier findings about the role of diapycnal mixing for 227Ac distribution, we found three other different types of vertical profiles. These...
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