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Update：2025-07-22

This website is designed according to the Web Accessibility Guidelines. It follows accessibility best practices by providing features such as Site Navigator and Access Keys for keyboard navigation. Below is a guide on how to use the Access Keys on this website:

Alt+U: Menu Links Area — contains the main links of this website.

Alt+C: Main Content Area — the primary content of this page.

Alt+Z: Footer Information Area.

ESC: Remove focus.

Tab: Move to the next focusable element.

Shift+Tab: Move to the previous focusable element.

If you are using Firefox, the Access Keys work as follows:

Alt+Shift+U: Menu Links Area — contains the main links of this website.

Alt+Shift+C: Main Content Area — the primary content of this page.

Alt+Shift+Z: Footer Information Area.

1.About Us

1-1Our Mission
1-2Information

2.News & Events

2-1Weekly Forecast
2-2Monitoring Dashboard
2-3Live Data
2-4News&Events

3.Response Measures

3-1Inter-ministerial Cooperation
3-2International Supervision
3-3Seawater Monitoring
3-4Ecological Monitoring
3-5Fishery Product Monitoring
3-6Foods Imported from Japan Monitoring

4.Seawater Monitoring

4-1Radiation Monitoring Map
4-2Analysis Results

5.Dispersion Forecast

5-1Forecast Overview
5-2 7-Day Forecast
5-3Case Study of Historical Data