Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin

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. W...

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Main 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
Other Authors: Earth Observatory of Singapore
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/103505
http://hdl.handle.net/10220/47339
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1035052020-09-26T21:25:44Z Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin 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 Earth Observatory of Singapore Hydrothermal Scavenging DRNTU::Social sciences::Geography Nansen Basin 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. Published version 2019-01-03T05:57:13Z 2019-12-06T21:14:08Z 2019-01-03T05:57:13Z 2019-12-06T21:14:08Z 2018 Journal Article 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 0094-8276 https://hdl.handle.net/10356/103505 http://hdl.handle.net/10220/47339 10.1029/2018GL079829 en Geophysical Research Letters © 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. 10 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Hydrothermal Scavenging
DRNTU::Social sciences::Geography
Nansen Basin
spellingShingle Hydrothermal Scavenging
DRNTU::Social sciences::Geography
Nansen Basin
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
Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
description 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.
author2 Earth Observatory of Singapore
author_facet Earth Observatory of Singapore
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
format Article
author 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
author_sort Valk, O.
title Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
title_short Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
title_full Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
title_fullStr Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
title_full_unstemmed Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
title_sort importance of hydrothermal vents in scavenging removal of 230th in the nansen basin
publishDate 2019
url https://hdl.handle.net/10356/103505
http://hdl.handle.net/10220/47339
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