“Safecast” is a radiation dose measurement project established in the wake of the Fukushima Daiichi nuclear power plant accident. Safecast participants are accumulating data using devices that can record radiation dose and location information, and radiation dose maps based on the information collected by volunteers have also been published.
Safecast
https://safecast.org/
What is Safecast | Safecast
https://safecast.jp/
Safecast is a project that was established a week after the Great East Japan Earthquake occurred on March 11, 2011, and its participants record radiation levels around the world using a device that combines GPS and Geiger counters. Masu. Safecast’s base of operations is in the United States, but its main activity location is Japan.
Safecast has created a radiation dose map “Safecast Map” based on the recorded data, and you can view the map at the link below.
Safecast Map
https://map.safecast.org/
When you access Safecast Map, a map of the area around Fukushima Prefecture will be displayed. In the initial state, the data measured so far is displayed cumulatively, so you can separate the data by period and view it. First, click the menu button at the top left of the screen.
Click “Safecast Snapshot” in the “Layer” menu to view measurement results separated by period. You can also hide the legend at the bottom right of the screen by clicking the × button.
The radiation dose measurement results around Fukushima Prefecture from March 11, 2011 to September 10, 2011 are as follows. The area surrounded by the green line is the difficult-to-return area.
By moving the slider at the top left of the screen, you can switch the measurement timing of the displayed data. For example, the measurement results from March 11, 2012 to September 10, 2012 are as follows.
The measurement results from March 11, 2016 to September 10, 2016, five years after the earthquake, are as follows. It can be seen that the areas with high doses are decreasing as time passes.
In addition, Safecast is recruiting volunteers who will be responsible for radiation dose measurement and translation on the following page.
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