Articles | Volume 16, issue 1
https://doi.org/10.5194/os-16-221-2020
https://doi.org/10.5194/os-16-221-2020
Research article
 | 
14 Feb 2020
Research article |  | 14 Feb 2020

Decrease in 230Th in the Amundsen Basin since 2007: far-field effect of increased scavenging on the shelf?

Ole Valk, Michiel M. Rutgers van der Loeff, Walter Geibert, Sandra Gdaniec, S. Bradley Moran, Kate Lepore, Robert Lawrence Edwards, Yanbin Lu, Viena Puigcorbé, Nuria Casacuberta, Ronja Paffrath, William Smethie, and Matthieu Roy-Barman

Viewed

Total article views: 2,727 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
1,887 745 95 2,727 290 76 90
  • HTML: 1,887
  • PDF: 745
  • XML: 95
  • Total: 2,727
  • Supplement: 290
  • BibTeX: 76
  • EndNote: 90
Views and downloads (calculated since 14 Jun 2019)
Cumulative views and downloads (calculated since 14 Jun 2019)

Viewed (geographical distribution)

Total article views: 2,727 (including HTML, PDF, and XML) Thereof 2,371 with geography defined and 356 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 23 Apr 2024
Download
Short summary
After 2007 230Th decreased significantly in the central Amundsen Basin. This decrease is accompanied by a circulation change, indicated by changes in salinity. Ventilation of waters is most likely not the reason for the observed depletion in 230Th as atmospherically derived tracers do not reveal an increase in ventilation rate. It is suggested that these interior waters have undergone enhanced scavenging of Th during transit from Fram Strait and the Barents Sea to the central Amundsen Basin.