Airborne cesium contamination maps published even beyond 250 km, Gunma, Asahi, September 28, 2011:
27 Ministry of Education, for the accumulation of radioactive cesium was measured using the aircraft, pollution maps published in Gunma Prefecture. Scattered zones of contamination by TEPCO Fukushima Daiichi nuclear power plant accident, it was found that spread over 250 km.
August 23 to September 8, was measured in a helicopter disaster in the province. Highly contaminated zone in the region, after extending to about 60 km northwest of nuclear power plants across the southwest turning in Tochigi, Gunma Prefecture, were followed up. According to the ministry, carried on the wind along the mountain cloud containing radioactive material deposited on the ground can be assumed that the trees and rain.
The amount of radioactive material の が に half points ga na ru half-life 30 years セ シ の で ウ ム 137 more than the most mo accumulation が か っ た の は Prefecture north. Some, such as mountain green Kiryu City and 180 kilometers away from nuclear power plants around, rose to becquerels per square 10000-300010. Exceeded 30,000 Bq part of the border between Nagano, 250 km away.
In the Chernobyl accident, more than 37,000 becquerels “contaminated areas” and that.
Published: September 28th, 2011 at 8:47 am ET