Cesium-137 reached Southern Hemisphere from Fukushima — First time xenon-133 ever detected below Equator (Australia)

Thursday, March 1, 2012
By Paul Martin

By ENENews
March 1st, 2012

[…] By middle of April, 133Xe was fairly uniformly distributed in the middle latitudes of the entire Northern Hemisphere and was for the first time also measured in the Southern Hemisphere (Darwin station, Australia). […]

During the accident events, 133Xe and 137Cs from FD-NPP were dispersed throughout the Northern Hemisphere and eventually also reached the Southern Hemisphere. […]

In April all measurement stations recorded an enhanced (but due to radioactive decay, decreasing) background of 133Xe caused by the FD-NPP emissions, indicating the transition to complete dispersion in the Northern Hemisphere (see Stohl et al., 2012). Even the Australian station Darwin started recording enhanced 133Xe concentrations in April, indicating penetration of radioactive contamination into the Southern Hemisphere. […]

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