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“Fatal Error”: Japan given precise radiation levels from US gov’t just after explosions — Officials kept data secret from public — Year of ‘safe’ radiation received in 8 hours

Government ignored U.S. radiation monitoring data in days after 3/11 THE ASAHI SHIMBUN Hiroo Sunaoshi and Kazuyuki Kanai June 18, 2012

Source: Asahi AJW

[...]

Japanese government officials took little notice of up-to-the-minute high radiation measurements provided by the U.S. Energy Department.

The Energy Department used its Aerial Monitoring System (AMS) between March . . . → Read More: “Fatal Error”: Japan given precise radiation levels from US gov’t just after explosions — Officials kept data secret from public — Year of ‘safe’ radiation received in 8 hours

Japan Gov’t: Monitoring shows relatively high radiation dose rate in Chiba ~200km from Fukushima; Tochigi, Gunma too — Necessary to continuously confirm accumulation and migration of radioactive substances

Title: Results of the Research on Distribution of Radioactive Substances Discharged by the Accident at TEPCO’s Fukushima Dai-ichi NPP (PDF:5203KB) Source: MEXT: Monitoring information of environmental radioactivity level Date Published: April 20,2012

Next Challenges

MEXT conducting the second investigation about the distribution status of radioactive substances

○Only a part of the results of I-131 . . . → Read More: Japan Gov’t: Monitoring shows relatively high radiation dose rate in Chiba ~200km from Fukushima; Tochigi, Gunma too — Necessary to continuously confirm accumulation and migration of radioactive substances

UN document: "There would be a hazard around eastern part of Japan" — 60 hours of emissions blowing southwest over Tokyo forecasted last March

enenews_08 2012-02-15 09.47

Title: RSMC Tokyo(JP), Obninsk(RU) and Beijing(CN) – Eastern Japan Deposition Source: Enformable Date: Feb 14, 2012

Source: Fukushima Daiichi Release date-time: Mar. 20 – Mar. 23, 2011

[...]

Exposure

RSMC Beijing and RSMC Tokyo’s exposure areas will spread toward east for the first 24 hours and then spread toward the southwest from the start . . . → Read More: UN document: "There would be a hazard around eastern part of Japan" — 60 hours of emissions blowing southwest over Tokyo forecasted last March

New contamination map shows Cesium-137 deposited over 900 km from Fukushima… Extends west of Hiroshima

Study shows nuclear crisis may have polluted wider areas of Japan, DPA, November 15, 2011:

Radioactivity from a damaged nuclear plant may have contaminated wider areas of Japan than previously thought, a study by a team of researchers showed Tuesday.  [...]

Radioisotopes of elements including caesium, tellurium and iodine were blown more than . . . → Read More: New contamination map shows Cesium-137 deposited over 900 km from Fukushima… Extends west of Hiroshima

Radioactive Silver-110m detected at over 10,000 Bq/m² outside 30km evacuation zone (MAP)

silvermap_t

Oct. 31 — “The Ministry of Education and Science announced on October 31 the ‘result’ of the survey they did in June. Much like announcing the result in July of the survey they did in March about radioactive fallout in Tohoku and Kanto, where radioactive iodine, cesium tellurium and silver were found in abundance . . . → Read More: Radioactive Silver-110m detected at over 10,000 Bq/m² outside 30km evacuation zone (MAP)

Asahi: Western Tokyo may have been contaminated when radiation plume fell to ground after Reactor No. 2′s core was exposed, says Japan prof.

newradmap

Excerpts from The Asahi Shimbun’s Oct. 24 AJW article Expert: Radioactive materials reached Kanto via 2 routes

“Hiromi Yamazawa, a professor of environmental radiology at Nagoya University, said the first radioactive plume moved through Ibaraki Prefecture and turned northward to Gunma Prefecture between late March 14 and the afternoon of March 15. Large . . . → Read More: Asahi: Western Tokyo may have been contaminated when radiation plume fell to ground after Reactor No. 2′s core was exposed, says Japan prof.

Gov’t: Plutonium dose at 27 microsieverts in Namiemachi — Will remain “for about 50 years” (MAP)

SOURCE: Daily Yomiuri

Plutonium detected outside N-plant site, Yomiuri Shimbun, October 2, 2011:

[...] A map released by the Education, Culture, Sports, Science and Technology Ministry on Friday shows plutonium was found in soil samples taken from a total of six locations in Futabamachi, Namiemachi and Iitatemura, Fukushima Prefecture. [...]

A preliminary ministry calculation shows that the . . . → Read More: Gov’t: Plutonium dose at 27 microsieverts in Namiemachi — Will remain “for about 50 years” (MAP)

Cesium contamination stretches to Japan’s west coast — Asahi: Over 30,000 Bq/m² in Nagano, 250 km from meltdowns (MAP)

nagano_t

SOURCE: Asahi

Airborne cesium contamination maps published even beyond 250 km, Gunma, Asahi, September 28, 2011:

Google Translation

27 Ministry of Education, for the accumulation of radioactive cesium was measured using the aircraft, pollution maps published in Gunma Prefecture. Scattered zones of contamination by TEPCO Fukushima Daiichi nuclear power plant accident, it was . . . → Read More: Cesium contamination stretches to Japan’s west coast — Asahi: Over 30,000 Bq/m² in Nagano, 250 km from meltdowns (MAP)

New Gov’t Radiation Map Released: “Many people dismayed” — Contamination 50 miles NW of Tokyo in Gunma “looks worse than feared” (MAPS)

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SOURCE: Google Maps

Radiation Map by Ministry of Education: Gunma Looks Worse Than Expected, EX-SKF, September 27, 2011:

On September 27 the Ministry of Education and Science announced the result of their latest aerial survey of radiation contamination they did over Gunma Prefecture, and many people are dismayed that the contamination in the . . . → Read More: New Gov’t Radiation Map Released: “Many people dismayed” — Contamination 50 miles NW of Tokyo in Gunma “looks worse than feared” (MAPS)

Gov’t: Clouds brought radioactive iodine southward after meltdowns, not only NW as was reported — Now trying to determine levels because of cancer risk (MAP & VIDEO)

Map as of June 14 (SOURCE: NHK)

Map as of June 14

Radioactive iodine spread south of nuclear plant, NHK, September 22, 2011:

A Japanese government survey shows that radioactive iodine emitted from the Fukushima Daiichi nuclear plant spread not only northwestward but also to the south of the plant [...] at relatively high levels. [...]

Ministry officials say clouds . . . → Read More: Gov’t: Clouds brought radioactive iodine southward after meltdowns, not only NW as was reported — Now trying to determine levels because of cancer risk (MAP & VIDEO)

French map of cesium-137 deposition from Fukushima shows the US more contaminated than Western Japan (MAP & VIDEO)

Map of Cesium-137 Deposition Across the Pacific by CEREA Shows the US More Contaminated Than Western Japan, EX-SKF, August 31, 2011:

[...] According to [France's CEREA simulation map of ground deposition of cesium-137 after Fukushima], the US, particularly the West Coast and particularly California, may be more contaminated with radioactive cesium than the western . . . → Read More: French map of cesium-137 deposition from Fukushima shows the US more contaminated than Western Japan (MAP & VIDEO)

300,000+ bq/m² of radioactive iodine deposited in areas near Tokyo before end of March: Japan study — Only includes I-131 (MAP)

modeli131

Atmospheric behavior, deposition, and budget of radioactive materials from the Fukushima Daiichi nuclear power plant in March 2011, Regional Environment Research Center, National Institute for Environmental Studies, by Yu Morino, Toshimasa Ohara, and Masato Nishizawa, August 2011:

h/t EX-SKF

Figure: Distributions of accumulated deposition rates of I-131 simulated by CMAQ over 11–29 March 2011

. . . → Read More: 300,000+ bq/m² of radioactive iodine deposited in areas near Tokyo before end of March: Japan study — Only includes I-131 (MAP)

Tokyo-area soil testing finds radioactivity up to Chernobyl relocation levels — 919,000 Bq/m² (MAP)

tkmap

Tokyo Metropolitan Soil Testing Map, Radiation Defense Project:

Red dot: July 17, 2011, Plantation, Misato-shi, Waseda ND @ 919,100 Bq/sq. meter

h/t Anonymous tips, jec

Radioactive substances rose 5 km in air on March 14-15 — Carried by jet stream to US and Europe

Wind carried radiation to Europe from Japan, researchers say, Deutsche Presse-Agentur, June 22, 2011:

Radioactive substances spewed from a damaged Japanese nuclear plant were carried to Europe through the United States by a jet stream, Japanese researchers said, Jiji news agency reported Wednesday.

A Japanese research group led by Toshihiko Takemura, associate professor at . . . → Read More: Radioactive substances rose 5 km in air on March 14-15 — Carried by jet stream to US and Europe