Program and Agenda

Abstract

EVOLUTION OF CS-137, CS-134 AND SR-90 IN THE PACIFIC OCEAN DERIVED FROM THE FUKUSHIMA DAI-ICHI NUCLEAR ACCIDENT

After the Tohoku earthquake and subsequent tsunami on March 2011, significant quantities of artificial radionuclides were released to the environment as a consequence of damage at the Fukushima Dai-ichi nuclear plants. Several studies estimated total discharges to the Pacific Ocean of up to several tens of PBq of 137Cs and 134Cs. Initial releases led to concentrations of Cs isotopes in the water column of about 40 times larger than 90Sr. However, recent leakages of contaminated water from trenches and tanks storing water treated for Cs using zeolite sorption process are likely to be significantly enriched in 90Sr compared to Cs isotopes. In this study, data on 137Cs, 134Cs and 90Sr concentrations in the water column sampled during cruises carried out since 2011 until today will be presented. This includes full transects from Japan to the West coast of North America, as well as shallow profiles located off the coast of Japan to within 1 km of Fukushima. Results will help constrain total inputs of Cs and Sr to the marine environment as well as for tracking the evolution of the 137Cs/90Sr activity ratio at the reactors and further into the Pacific.

ePoster:

Authors

Masqué, P., Universitat Autònoma de Barcelona, Spain, pere.masque@uab.cat

Casacuberta, N., ETH-Zurich, Switzerland, ncasacuberta@phys.ethz.ch

Pike, S., Woods Hole Oceanographic Institution, USA, spike@whoi.edu

Castrillejo, M., Universitat Autònoma de Barcelona, Spain, mcastrillejo.sci@gmail.com

Buesseler, K. O., Woods Hole Oceanographic Institution, Spain, kbuesseler@whoi.edu

Details

Poster presentation

Session #:114
Date: 2/24/2014
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: 598