Bomb fall-out 236U as a global oceanic tracer using an annually resolved coral core

Autor(en)

Stephan Winkler, Peter Steier, Jessica Carilli

Abstrakt

Anthropogenic U-236 (t(1/2)=23.4 My) is an emerging isotopic ocean tracer with interesting oceanographic properties, but only with recent advances in accelerator mass spectrometry techniques is it now possible to detect the levels from global fall-out of nuclear weapons testing across the water column. To make full use of this tracer, an assessment of its input into the ocean over the past decades is required. We captured the bomb-pulse of U-236 in an annually resolved coral core record from the Caribbean Sea. We thereby establish a concept which gives U-236 great advantage - the presence of reliable, well-resolved chronological archives. This allows studies of not only the present distribution pattern, but gives access to the temporal evolution of U-236 in ocean waters over the past decades.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Australian Nuclear Science and Technology Organisation (ANSTO)

Journal

Earth and Planetary Science Letters

Band

359

Seiten

124-130

Anzahl der Seiten

7

ISSN

0012-821X

DOI

https://doi.org/10.1016/j.epsl.2012.10.004

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

105304 Hydrologie, 1030 Physik, Astronomie, 105105 Geochemie, 105101 Allgemeine Geologie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d7f0b025-5576-45b5-a644-f359343765a1