Fwd: [Safecast Jpn] Radioactive materials are floating in the air

[Pieter Franken]

FYI.

Begin forwarded message:

From: Stig Bjorge <stig.ing...@gmail.com>

Subject: [Safecast Jpn] Radioactive materials are floating in the air

Date: November 17, 2011 5:53:43 PM GMT+09:00

To: safecas...@googlegroups.com

Reply-To: safecas...@googlegroups.com

A research project by Ibaraki University and Tokyo University revealed that radioactive materials fall once to the ground and then get blown up again by the wind, so the radioactive materials are floating in the air. The research group collected radioactive fallout including I131, Cs134, etc. every 24 to 72 hours at 11 locations in eastern Japan and Tokyo areas from March through August.

They so far completed analysis on data for Fukushima city, Hitachi city and Mito city. The study find that the concentration of radioactive materials depends on wind direction, and when the wind blows from the direction of Fukushima Daiichi, it goes up 100,000 times above the level before the accident . When the wind blows from other directions, it goes up by 1,000 times above the level before the accident. The radioactive materials fall on the ground and get attached to soil particles that lift up by the wind and float in the air as dust.

Assistance Professor Kazuyuki Kita, Earth Sciences, Ibaraki University, says that the concentration level does not change after typhoons and that the amount of radioactive materials floating in the air may be related to how dry the soil surface is. Their research will be presented at the meeting of the Meteorological Society of Japan on November 17.

http://www.asahi.com/special/10005/TKY201111110521.html

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