SCOR Working Group 146
Radioactivity in the Ocean, 5 Decades Later (RiO5)

Co-chairs: Ken Buesseler (USA) and Minhan Dai (China-Beijing)

Other Full Members: Michio Aoyama (Japan), Claudia Benitez‐Nelson (USA), Nuria Casacuberta (Switzerland), Sabine Charmasson (France), Pere Masqué (Spain), Paul Morris (Monaco), Deborah Oughton (Norway), and John Smith (Canada)

Associate Members: Roberta Delfanti (Italy), Gary Hancock (Australia), José Godoy (Brazil), Kathryn Higley (USA), Andy Johnson (USA), Vladimer Maderich (Ukraine), Williard Moore (USA), Sandor Muslow (Chile), Reiner Schlitzer (Germany), and Jordi Vives i Batlle (Belgium)

Terms of Reference

  1. Combine and build upon existing global and individual databases of natural and artificial radionuclide distributions to make an user friendly and easily accessible on line product.
  2. Summarize and publish review papers on these global radionuclide datasets and provide examples of how these can help improve our understanding of ocean processes and contaminant fate and transport.
  3. Identify gaps in scientific knowledge in relation to radioactivity in the marine environment.
  4. Bring together academic, nuclear industry and national laboratory expertise for an international symposium on radionuclides in the ocean.
  5. Provide a warehouse of education materials to assist in the education and training of the next generation of marine radiochemists and radioecologists.
  6. Develop tools to enhance public understanding of radioactivity, in particular in the ocean.

Approved: September 2014

Web site:


#1: 15-17 July 2015 in Woods Hole, Massachusetts, USA
#2:5-7 June 2016 in Xiamen, China (training workshop 7-10 June 2016)
#3:9-11 August 2017 in Aix‐en‐Provence, France