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Monitoring Station: http://sccc.org.au/archives/2630
2015/05/17 at 8:24 pm
Southern Hemisphere Rain Water Report For April 2015.
This short animation of Northern, and Southern Hemisphere air circulation, shows why we can get detections so far south.
I delayed publishing the April 2015 rain water report because of ongoing technical discussion regarding the possible detection of Tritium, in this months water filter test.
There are very small amounts of naturally occurring Tritium in the atmosphere. It can be created in trace amounts by spallation in the upper atmosphere, by cosmic rays or from releases from a nuclear power plant or nuclear accident.
It is only conjecture at this point that it is Tritium, and has not been confirmed. It could equally be another isotope, or a technical issue with the equipment at these very low energy keV detection levels.
Both Iodine I-129, and Beryllium Be-7, which were detected in this months water filter test can also be created by spallation in the upper atmosphere, by cosmic rays or from releases from a nuclear power plant or nuclear accident.
There was a lot of solar storm activity last month, and it takes around two weeks for spallation products to reach the surface of the planet.
Lead Pb-210 is the decay daughter of naturally occurring Radon decay. It can also be released from a nuclear power plant, or nuclear accident. At present there is no conclusive evidence that any of the latest isotope detections here at this location are from Fukushima.
For those who are interested, more technical discussion about the possible Tritium detection can be found here,
Years of local rain water, and rain swab test results can be found here.
Disclaimer: This is an amateur volunteer run service. Human error can provide incorrect information, and equipment malfunction can produce false readings. Do not rely on, or take action upon information presented here, without further research.