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Title: Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
Authors: Valk, O.
Rutgers van der Loeff, M. M.
Geibert, W.
Gdaniec, S.
Rijkenberg, M. J. A.
Moran, S. B.
Lepore, K.
Edwards, R. L.
Puigcorbé, V.
Lu, Yanbin
Keywords: Hydrothermal Scavenging
DRNTU::Social sciences::Geography
Nansen Basin
Issue Date: 2018
Source: Valk, O., Rutgers van der Loeff, M. M., Geibert, W., Gdaniec, S., Rijkenberg, M. J. A., Moran, S. B., . . . Puigcorbé, V. (2018). Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin. Geophysical Research Letters, 45(19), 10,539-10,548. doi:10.1029/2018GL079829
Series/Report no.: Geophysical Research Letters
Abstract: In this study we present dissolved and particulate 230Th and 232Th results, as well as particulate 234Th data, obtained as part of the GEOTRACES central Arctic Ocean sections GN04 (2015) and IPY11 (2007). Samples were analyzed following GEOTRACES methods and compared to previous results from 1991. We observe significant decreases in 230Th concentrations in the deep waters of the Nansen Basin. We ascribe this nonsteady state removal process to a variable release and scavenging of trace metals near an ultraslow spreading ridge. This finding demonstrates that hydrothermal scavenging in the deep‐sea may vary on annual time scales and highlights the importance of repeated GEOTRACES sections.
ISSN: 0094-8276
DOI: 10.1029/2018GL079829
Rights: © 2018 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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