Citat:
Ursprungligen postat av alpi
Från länken du nämner "Fukushima is emitting around 1,3*10^17 Bq iodine per day and the total emission from Chernobyl was 1,7*10^18 Bq." Att Fukushima under 13 dagar (har jag räknat rätt?) skulle avge lika mycket radioaktivt jod som totalt från Tjernobyl låter ju väldigt trovärdigt!
Folket på New Scientist är som dom alltid har varit.
Nu var det ju inte New Scientists som påstod det utan Gerhard Wotawa från Austria's Central Institute for Meteorology and Geodynamics.
"In the 10 days it burned, Chernobyl put out 1.76 × 1018 becquerels of iodine-131, which amounts to only 50 per cent more per day than has been calculated for Fukushima Daiichi. It is not yet clear how long emissions from the Japanese plant will continue.
Similarly, says Wotawa, caesium-137 emissions are on the same order of magnitude as at Chernobyl. The Sacramento readings suggest it has emitted 5 × 1015 becquerels of caesium-137 per day; Chernobyl put out 8.5 × 1016 in total – around 70 per cent more per day.
"This is not surprising," says Wotawa. "When the fuel is damaged there is no reason for the volatile elements not to escape," and the measured caesium and iodine are in the right ratios for the fuel used by the Fukushima Daiichi reactors. Also, the Fukushima plant has around 1760 tonnes of fresh and used nuclear fuel on site, and an unknown amount has been damaged. The Chernobyl reactor had only 180 tonnes.
The amounts being released, he says, are "entirely consistent" with the relatively low amounts of caesium and iodine being measured in soil, plants and water in Japan, because so much has blown out to sea. The amounts crossing the Pacific to places like Sacramento are vanishingly small – they were detected there because the CTBT network is designed to sniff out the tiniest traces."