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

Published: April 20th, 2012 at 6:54 am ET
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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 analysis are obtained.
○Only 100 sampling points of Pu and Sr are analysed.

>> The radioactive substances contained in soil need further to be investigated for the detailed check of the diffusion condition of radioactive substances.

○The results of aerial monitoring indicate a relatively high dose rate in Tochigi, Gunma,
Chiba prefecture.

>> There is need to expand the area of soil survey.

○The accumulation status of the radioactive substances on the ground surface significantly change due to the influences of rain and storm, etc.

>> It is necessary to confirm the status on accumulation and migration of radioactive substances continuously.

See also: Summarized Version of the “Results of the Research on Distribution of Radioactive Substances Discharged by the Accident at TEPCO’s Fukushima Dai-ichi NPP” (PDF:6510KB)

Published: April 20th, 2012 at 6:54 am ET
By

22 comments

22 comments to 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