You can search the results of environmental radioactivity surveys conducted by the Nuclear Regulation Authority in cooperation with relevant ministries and agencies, all 47 prefectures, and other organizations.

The Radioactivity Measurement Methods series has been developed as a standard manual for environmental radioactivity analysis and environmental radiation measurement.

For professionals responsible for radioactivity analysis and measurement, we provide detailed information on major radionuclides, analysis workflows, and case studies.

We introduce how radiation and radioactivity are depicted in movies, dramas, anime, and other media.

You can check the current ambient dose rates measured by monitoring posts nationwide.

You can check the radioactivity survey results (radioactivity concentrations) for various samples collected in all 47 prefectures.

This section describes sampling and pretreatment methods for analytical samples in environmental radioactivity surveys, as well as measurement techniques for radioactivity and radiation.

You can check the results of radioactivity level surveys at ports where nuclear-powered vessels dock.

This section explains the committed effective dose, a standard used to evaluate the effects of radioactive substances ingested into the body.

You can check committed effective doses by food category to evaluate the effects of radioactivity ingested through food.

Using data from the Environmental Radiation Database, you can create spatial dose-rate maps, temporal-trend graphs, concentration range charts, and summary tables.

The Nuclear Regulation Authority measures radioactive xenon concentrations to monitor environmental radioactivity levels.

This refers to the nuclear power plant accident caused by the Great East Japan Earthquake and subsequent tsunami on March 11, 2011.