These Radioactive Maps are based on official
measurements from many provinces and locations in Japan as cited by
MAP / Japan quake radioactive material monitoring post MAP and also
Sports, Science and Technology) and
also from Fukushima
Prefecture. For levels at the damaged powerplant
itself, see the range of data at the TEPCO
company website, especially radiation
levels and sampling
map. An excellent site, full of radiation information from
across Japan that is presented as graphs is found at Fleep,com
I hope these maps help in understanding the current situation in Japan after the accidents at the Fukushima Nuclear Power Plants, especially the localised spots of high radiation that have not been evacuated.
Major Problem with Lack of Support and
Sound Advice from Senior Government Official's and Scientific Advisors
This is especially seen in the predicament of the mayor of Iitate. “I don’t want to be remembered as the mayor who risked his people’s lives by not evacuating,” said Mr. Kanno, who said he had lost sleep and weight agonizing over whether to stay. “I want us to be remembered as the little village that didn’t give up.”
is made from data collected from a range of sources as outlined above
over the preiod of 3rd to 5th of April. A more complete set of
data immediately around the damaged Nuclear Power Plant help to
especially show the uneven spread of irradiation and the release of
susbtantial radioactive material from the core at distances of 15
to 50 km from the NPP in a north-westerly direction.
As stated previously there particularly seems to be a "hot spot" near the village of Tsushima (Namie Precinct, Futaba District, Fukushima Prefecture) and also even higher at Hirusone (Namie Precinct, Futaba District, Fukushima Prefecture - 8 km to the east) with levels of up to 74uG/h recorded on the 28 & 29th March. Exposure to levels of 20uG/h and above are regarded in Japan as consituting a "Medical Emergency" and requiring administration of iodine .
For such localised high levels over this area, it would seem a significant amount of radioactive material from the reactor rods had been deposited here, rather than just radioactive steam or gaseous emmisions. These levels are the same as those measured at the "West Gate"of the damaged Fukushima Daishi reactor (67uG/h) only a few hundred meters from the reactors.
There has recent concern about unacceptably high levels of radioactivity at the nearby village of Iitate (10 km to the north), according to Elena Buglova, head of the IAEA's Incident and Emergency Centre, the radiation reading in Iitate village were "about two times higher than levels" at which the agency recommends evacuations. The reported levels in Iitate of 7-10uG/h are much lower than the readings of between 48 - 82uG/h found in Tsushima and Hirusone precincts - making it very apparent that there is a very serious unresolved issue here.
Local Officials Left Without Strong National Leasdership and With Poor Advice.
One feels a strong sympathy for officials, like the mayor of Iitate village struggling to cope and do the right thing by his village with extremely little effective support.
Mayor Kanno ...
said "that he was fed up
with contradictory information about the radiation risks. ... Mr.
said that he was not trying to ignore the dangers, and that he felt
village was “not completely safe.” But he also said that without a
criterion for evacuation, he was reluctant to tell villagers to leave,
that would take them away from their farms and livelihoods, and force
live in evacuation centers in distant, unfamiliar places.
“I don’t want to be remembered as the mayor who risked his people’s lives by not evacuating,” said Mr. Kanno, who said he had lost sleep and weight agonizing over whether to stay. “I want us to be remembered as the little village that didn’t give up.”
|The map is
produced from data from the 28 & 29th of March 2011.
Prefectures outside Fukushima
As shown below, the natural levels of background radiation for Japan are about 0.05uG/h.
The areas of Japan as indicated on the map below 0.2 uG/h, are within four times of this natural background levels and should be regarded as safe.
The typical atmospheric radiation ranges found
in Japan are 0.017 to 0.080 uG/h, averaging about 0.050 uG/h
Postharvest Fresh Revised Mar 2011 (S. Morris)