Thorium isotopes in the water column in Nansen Basin during POLARSTERN cruises PS70 (ARK-XXII/2) in 2007 and PS94 (ARK-XXIX/3) in 2015

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 non-steady state removal process to a variable release and scavenging of trace metals near an ultra-slow 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.

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Valk, Ole, Rutgers van der Loeff, Michiel M, Geibert, Walter (2018). Dataset: Thorium isotopes in the water column in Nansen Basin during POLARSTERN cruises PS70 (ARK-XXII/2) in 2007 and PS94 (ARK-XXIX/3) in 2015. https://doi.org/10.1594/PANGAEA.893871

DOI retrieved: 2018

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.893871
Author Valk, Ole
Given Name Ole
Family Name Valk
More Authors
Rutgers van der Loeff, Michiel M
Geibert, Walter
Source Creation 2018
Publication Year 2018
Resource Type application/zip - filename: ValkO_2018
Subject Areas
Name: Lithosphere

Related Identifiers
Title: Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin
Identifier: https://doi.org/10.1029/2018GL079829
Type: DOI
Relation: IsSupplementTo
Year: 2018
Source: Geophysical Research Letters
Authors: Valk Ole , Rutgers van der Loeff Michiel M , Geibert Walter , Gdaniec Sandra , Rijkenberg Micha J A , Moran S Bradley , Lepore Kate , Edwards Ross L , Lu Y , Puigcorbé Viena .