I'm Katsumi Shozugawa, who is a researcher of radioactive materials released into the environment, especially focused on the Fukushima accident, Japan (2011-).
Some photos taken in the evacuation zone in Fukushima are shown in gallery page, also the air dose rate at Tokyo 2020 Olympic site are shown in dose rate page
Reaserch
Radiation in Environment
Dynamics/mobility of radiomaterials released by Fukushima Nuclear Accident(2011)