Where Did The Cesium Go After Fukushima Blew?

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Thanks to Allegedlyapparent.wordpress.com for the maps and explanations.


CESIUM 137
You can see right here on the US Geological Survey map that Los Angeles has been treated to the biggest dose in the country (at least in the areas that were measured).

Radioactive Cesium has a half-life of about thirty years.




Dot size represents relative deposition amounts. Fallout amounts measured in precipitation by USGS provide a clearer picture of fission-product wet deposition across the USA.



More details available at this study pdf.

Fission Products in National Atmospheric Deposition
Program—Wet Deposition Samples Prior to and Following
the Fukushima Dai-Ichi Nuclear Power Plant Incident,
March 8–April 5, 2011










To compare measurements to Japan, the sample WA98, with its (calculated) whopping deposition of 5100 Bq/m^2 of I-131 in Washington, very near Portland, Oregon, but some 4700 miles (or about 7600 km) away from Fukushima, Japan, lies in the second color range (1000 to 10,000 Bq/m^2) on the Iodine fallout map for Japan.


Annotated Japan SPEEDI map for I-131, to show how one sample from Washington compares. Click for the blogpost with my basic “IODINE-131 a basic map comparison: Fukushima versus Chernobyl” from May 26, 2011.

This shows clearly that areas in North America, more than 7,000 km away, received more radioactive fallout than parts of Honshu, Japan, less than 200 km from the stricken nuclear plant.

Source


HOWEVER;

What we got in California doesn't even touch what Europe got from Chernobyl.

At least, according to this information:

Click here to see animated maps of the contamination plume and color comparisons between the two disasters.

What this map does tell me is that Pacific seafood will be contaminated.

More dispersion animation maps are available here.


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Shortly after 3/11 I spoke to a nuclear physicist at UC Berkeley in an attempt to understand the measurements of radioactive isotopes and what they meant.

I asked him about the SPEEDI data and he acted like he didn't know what I was talking about. "They have so many different measuring systems," he said.

Otherwise, he was really nice and I enjoyed the conversation.
He said he wasn't doing anything in particular to protect his family and didn't believe that any harm would come from the Dai-Ichi meltdowns.

I am pretty sure he believed everything he was telling me. Except maybe the bit about SPEEDI.

He did make clear to me that his training and education is in nuclear physics---and not in the behavior of radioactive isotopes in the human body.