Radioactive waste is a serious environmental concern, as it can have detrimental effects on biological systems. The major sources of anthropogenic radioactive contamination to the marine environment are related to nuclear weapon and fuel cycles, in particular global fallout from atmospheric test detonations, accidental and authorized discharges from nuclear installations and leakages from nuclear waste dumped in or near the oceans. Offshore industry also contributes considerably through releases of naturally occurring radionuclides as by-products from petroleum production.
In his doctorate, Simonsen has looked at topics in the crossing point between physical oceanography and radioecology. He has investigated the impact of numerical model representation of biogeochemical and geophysical processes, a numerical model system for marine radionuclide transport was developed and utilized. Simonsen has performed a set of case studies, including historical and hypothetical radionuclide discharges as well as estuarine transport of a trace metal.
Magne successfully defended his PhD thesis “Marine transport modeling of radionuclides using a dynamic speciation approach” on Tuesday June 18, 2019. The title of his trial lecture was "Currents in the ocean: application to the North Atlantic".
First opponent: Dr. Raúl Periáñez, University of Seville, Spain
Second opponent: Dr. Céline Duffa, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), France
Committee coordinator: Professor Helen K. French, MINA, NMBU
Main supervisor: Dr. Ole Christian Lind, MINA, NMBU
Co-supervisor(s): Dr. Øyvind Sætra, Norwegian Meteorological Institute, Professor Pål Erik Isachsen, Norwegian Meteorological Institute, professor Brit Salbu, MINA, NMBU and Dr. Per Strand, Norwegian Radiation and Nuclear Safety Authority (DSA)
The doctoral thesis is available for public review at the NMBU library
Thesis number 2019:42, ISSN 1894-6402, ISBN 978-82-575-1602-4