Pedzisa mutsara unotevera: Mvura zhinji yakakonzerwa nedutu yakawedzera kupararira kwezvinhu zvine mwaranzi mumvura yepasi pasi pedzimba dzesimba renyukireya dzeFukushima I neFukushima II, idzo dzakatambura nekunyungudika kwenyukireya muna 2011 zvichitevera dutu
Kudengenyeka kwenyika kweMW9.0 uye tsunami yakatevera. Mwero wehydrogen isotope tritium yakawedzera zvakapetwa kagumi kubva mumwedzi wapfuura kusvika ku150,000 becquerel palitira. Strontium-90, chinhu chinozivikanwa kuti chinokonzera kenza yemapfupa, chakakwira kusvika pamwero unokosha wemabhekereli mamiriyoni 1,2 palitita. Nzvimbo yakaparadzana yokutevedza mienzaniso yakaratidza kuwedzerwa zvakapetwa kaviri mumwero wechinhu chinobudisa beta-particle kubva pamberi pedutu.