Japanese Ministry of Education, Culture, Sports, Science and Technology and the United States Department of Energy announced the land surface contamination map today. It is the first time the map is announced.
above pdf includes following 4 pictures.
Fig.1 Environmental radiation levels(μSv/h)
Fig.2 Cesium-134 and Cesium-137 on surface (Bq/m2)
Fig.3 Cesium-134 on surface (Bq/m2)
fig.4 Cesium-137 on surface (Bq/m2)
Red : 3,000,000-14,700,000 Bq/m2
Yellow : 1,000,000-3,000,000 Bq/m2
Green : 600,000-1,000,000 Bq/m2
Pale blue : 300,000-600,000 Bq/m2
Blue : -300,000 Bq/m2
To compare elder brother Chernobyl map, I need to change the unit.
Red : 81-396.9 Ci/km2
Yellow : 27-81 Ci/km2
Green : 16.2-27 Ci/km2
Pale blue : 8.1-16.2 Ci/km2
Blue : less than 8.1 Ci/km2
Roughly speaking, degree of pollution of red + yellow + green zone equal to "Confiscated/Closed Zone" and "Parmanent Contrl Zone" in Chernobyl