The gamma dose rate around the Oarai Research & Development Institute have been affected by radioactivities spread out from the damaged Fukushima Daiichi nuclear power station since the Great East Japan Earthquake on March 11. The maximum level was recorded on March 15. The second peak have arrived on March 21.After that, the monitoring dose rate levels have been decreasing slowly.Our site is about 120km far from the Fukushima power station.

Current Environmental Monitoring Results

2026 January 30 18:10-18:20 　 Unit:ｎGy/h 80ｍ NNW 5.8 m/s 　 40ｍ N 4.2 m/s 　 10ｍ calm 0.4 m/s 　 　 　 Wind Direction Wind Speed(m/s) Temperature(oC) Humidity(%) Precipitation(mm) Atmospheric Stability 80m NNW 5.8 0.7 41.8 0.0 G 40m N 4.2 10m calm 0.4

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