The Japanese newspaper Tokyo Shimbun on April 27 carried the distribution chart which was opened to the public by the combined accident measure headquarters of the government and the Tokyo Electric Power Co. for the first time.

The distribution chart worked out on the basis of the amount of radiation measured in the area near the power plant confirmed that the amount of radiation in the area more than 30 km away from the power plant is 20 microsieverts per hour or hundreds of times that at an ordinary time.

The amount of radiation was higher in the areas northwest of the power plant.

Radioactive iodine-131 of 56 Bq per 1 cc equal to 1,400 times the legal level was detected in sea water near the intake of Reactor No. 2 of the power plant.

Radioactive substance of comparatively high concentration was discovered in the sewage treatment facility of Gooriyama City, Fukushima Prefecture.

Radioactive cesium of 26,400 Bq per kg was detected in mud of this facility and 334,000 Bq per kg in the roasted and cooled mud, NHK reported.

It is reported that radioactive cesium detected in the roasted mud is nearly 1,300 times that handled before the accident in the power plant.

The Fukushima prefectural authorities assume that radioactive substance on the surface of the earth was washed away into the drainage set-up by rainwater and was accumulated in the course of sewage treatment.

At a time when the prospect for tiding over radioactive crisis remains gloomy, radioactive cesium going beyond the legal level was detected again in the fish caught in the waters off Kitaibaraki City, Ibaraki Prefecture adjacent to Fukushima Prefecture, Tokyo Shimbun said.

The seabed position near the epicenter which caused the massive quake moved about 50 meters southeast and rose 7 meters, according to the seabed prospecting.