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Radiation dose spikes in Ibaraki northeast of Tokyo near time of last night’s 5 intensity quake — Highest level measured since April — Double average

Published: January 23rd, 2012 at 1:51 pm ET
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Title: Dose at Tsukuba(KEK)
Source: HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION, KEK
Date: Jan 24, 2012

Measured at: Oho 1, Tsukuba 305-0801, Japan [50 km northeast of Tokyo, 150+ km from Fukushima]
Detector: GM counter (photo)

Below, the spike appears to begin around 20:00 on 1/23 and reaches almost 0.2 microSv/h, about twice the normal level:

The far right edge of the chart below shows the recent spike as the highest since April 2011:

Read the report here

 

Published: January 23rd, 2012 at 1:51 pm ET
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36 comments

36 comments to Radiation dose spikes in Ibaraki northeast of Tokyo near time of last night’s 5 intensity quake — Highest level measured since April — Double average