Reply #3: Yes, the cesium has such a long half-life

[Yo_Mama]

I was trying to bracket the expected ag losses at Fukushima.

I realize that the two accidents are extremely different in nature. Chernobyl was sort of a nuclear volcano which spewed huge volumes of radioactive particles into the atmosphere in a very short time. Fukushima is a much lower-level emitter, but seems set to emit for a longer time. So the distribution patterns will be different.

But since we are beginning to get the first soil contamination readings out of Japan, and since we know levels of the longer-lived isotopes aren't going to be dropping in the close-in areas, it at least gives an index.

http://www.terrapub.co.jp/e-library/kawahata/pdf/147.pd...
I found that article helpful in guessing at marine impacts.