A little Elaboration on my Cesium-137/134 Fallout Color-Legends “Translation Legend”

[-Oct 3, 2011 – CAUTIONING NOTE- In several cases I erroneously “compared apples and oranges”- so to speak-, namely maps with fallout of BOTH Cesium 134 and 137 with maps that ONLY show Cesium 137 fallout.  The comparison is thus not valid as presented.  But I find it still share-worthy enough and valid if you keep that in mind to not take it all down. – mvb]

I’ve come across 4 maps that I wanted to share: 1 about the ongoing Fukushima Dai-ichi nuclear catastrophe (that started March 11, 2011), 3 about the 1986 Chernobyl nuclear catastrophe.  In order to be able to REALLY compare both accidents, I thought the fallout maps might tell a story, so I tried to “translate” the vastly different legends and color in the maps in the differently color-coded maps.   I put the legends side by side (vertically, with the highest radioactivity measurements at the top).  The black horizontal lines with the values show where colors change on the different legends, but the location is not linearly adjusted (too much work already).   Further below are all the maps, listed in order corresponding with the vertical color bars left to right, which I made this color-translation legend for.

My Comparison Map Legend for several Cesium Color Legends:

Left to Right:



  • The third map is the one from UNEP, which shows the contamination from Chernobyl over all of Europe:  http://maps.grida.no/go/graphic/radiation-from-chernobyl in great detail with a color legend that makes sense.  In the previous post I “translate” this map to what it would look like (approximately) if the MEXT Fukushima color-coding were used.  In the next blogpost I’ll show some other conversions to illustrate the similarity and differences between Fukushima and Chernobyl, at least from this kind of “first impression of comparing fallout maps” perspective.   From 1986’s disaster:

And If you’d like to see the 4 legends-only together and the one step before I finilized the color-translation-legend, here you go

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One Response to A little Elaboration on my Cesium-137/134 Fallout Color-Legends “Translation Legend”

  1. Pingback: Chernobyl’s Radioactive Forest Fire. [April 29, 2015] – Location on map, Wind & Radiation Monitoring links | Not All Alleged Is Apparent…

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