Download - MEXT Ocean Monitoring Radiation Data March 24 Pages from C141839-02C-8

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U.S. Embassy, Tokyo

SBUThis email is UNCLASSIFIED -----riginal Message-----From: [email protected] [mailto:[email protected]]Sent: Sunday, March 27, 2011 10:55 PM(b)(6)

Subject: Radiation data by MEXTDear Mr. Cherry,Please see attached the document.Thses are reviced version of sea monitoring on 03/24 and 03/25.The values which are indicated by red square are reviced.In recent sheet of 03/24 there were mistake of typing.In recent sheet of 03/25 there were mistake of calculation on unit.

Sincerely yours,Naoaki AKASAKA


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I News ReleaseReadings of Sea Area Monitoring at Post Out of Fukushima Dai-ichi NP P

March 25, 2011Ministry of Education, Culture, Sports, Science

and Technology (MEXT)1. Radioactivity Concentration Undersea

Sampling Point Sampling Time Nuclide Radioactivity Concentration(BqY/L)'x3and DateSampling Point 1 at 2011/3/24 8:07 1311 22.3

Sea Area 1*X1 137Cs 15.1Sampling Point2 at 2011/3/24 9:09 131 16.9

Sea Area 1137

Cs 8.32Sampling Point3 2011/3/24 10:00 131 57.4at Sea Area 1 137 Cs 26.1Sampling Point4 2011/3/24 11:00 131 59.1at Sea Area 1 137 Cs 16.0Sampling Point 1 2011/3/24 11:48 131 40.5at Sea Area 2X2 137Cs 11.1

Sampling Point2 2011/3/24 12:35 131 36.2at Sea Area 2 137Cs 16.9Sampling Point3 2011/3/24 13:24 131133.4at Sea Area 2 24 13 7Cs 12.3

Sampling Point4 at 2011/3/24 14:18 131! 37.5Sea Area 2 13 7Cs 13.4

X1 Sea Area 1 offshore of Fukushima Dai-ichi NPPX2 Sea Area 2:offshore of Fukushima Dai-ni NPP

2. Reading of Over the Sea


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I

3. Reading of Radioactivity Concentration in dust over the SeaSampling Point Sampling Time Nuclide Radioactivity Concentration (Bq/m3)"X2and Date

Sampling Point 1 2011/3/24 8:07 1311 0.213at Sea Area 1 137 Not Detectable

Sampling Point 2 2011/3/24 9:09 131 Not Detectableat Sea Area 1 137cs 0.467

Sampling Point3 2011/3/24 10:00 131 3.96at Sea Area 1 137os No t Detectable

1311 E1 .Sampling. Point4 2011/3/24 11:00at Sea Area 1 137CS No t Detectable

131I ,1 1Sa mp in g Po in 1 2 11 3 2 114 8 ...... .at Sea Area 2 137CS No t Detectable

Sampling Point2 2011/3/24 12:35 1311 Not Detectableat Sea Area 2 137 Not Detectable

Sampling Point3 2011/3/24 13:24 131 Not Detectableat Sea Area 2 137CS No t Detectable

Sampling Point4 2011/3/24 14:18 131 Not Detectableat Sea Area 2 137CS 0.493

Boldface is corrected onMarch27 (mistake:conversion of unit)Each sampling point is indicated below

Sampling Point 1 370 39.8' N, 1410 24.3Y Eat Sea Area 1Sampling Point 2 37' 35.0" N, 141' 23.9" E

at Sea Area 1Sampling Point3 370 30.1' N, 1410 24.3' E

at Sea Area 1Sampling Point4 370 23.2' N, 1410 24.1' Eat Sea Area 1Sampling Point 1 370 16.1' N, 141' 23.8' E

at Sea Area 2


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Reading of Over the Sea~Jj~ {North

Radioactivity ConcentrationUndersea,4T'

Reading of Radioactivity Concentrationin dust over the Sea

Cs-i 37


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Readings of Sea Area Monitoring March 25 , 2011

Fukushim a Dai-ichi NP P --- ----- . ... .- - -- - --- -

! Fukushima Dai ni NP P

0 /

P fI'S


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I News Release

Readings of Sea Area Monitoring at Post Out of Fukushima Dai-ichi NPPMarch 24, 2011

Ministry of Education, Culture, Sports, Scienceand Technology (MEXT)

1. Radioactivity' Concentration UnderseaSampling Point Sampling Time Nuclide. Radioactivity Concentration (Bq/L)Xand Date

Sampling Point 1 at 2011/3/23 8:10 1311 24.9Sea Area 1"X1 137Cs 16.4

Sampling Point2 at 2011/3/23 9:00 1311 30.0Sea Area 1 137Cs 11.2Sampling Point3 2011/3/23 9:30 131 1 76.8at Sea Area 1 137cs 24.1

Sampling Point4 2011/3/23 10:15 131 37.3at Sea Area 1 137Cs 18.2

Sampling Point 1 2011/3/23 11:20 131 54.7at Sea Area 2"X2 1370s 12.7Sampling Point2 2013/3/23 12:00 131 42.0at Sea Area 2 1370s 12.8

Sampling Point3 2011/3/23 12:37 131 29.0at Sea Area 2 137Cs 15.3

Sampling Point4 at 2011/3/23 13:32 1311 39.4Sea Area 2 137Cs 15.2

. 1 Sea Area 1 ;offshore of Fukushima Dai-ichi NPPX2 Sea Area 2:offshore of FukushimaDai-ni NPPX3 Radioactivity concentration undersea limit outside of the environmental supervised area ('31I:40Bq/L, 137Cs:90Bq/L)


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3. Reading of Radioactivity Concentration in dust over the Sea'X 1

Sampling Point -1'"P'"'1 '1"v Nuclide Radioactivity Concentration(Bq/m 3)' 2and DateSampling Point 1 2011/3/23 8:10 131 1 0.0623at Sea Area 1 1371s 0.0694Sampling Point 2 2011/3/23 9:00 1311

at Sea Area 1 137s .6Sampling Point3 2011/3/23 9:30 131 1at Sea Area 1 137Cs -

Sampling Point4 2011/3/23 0 0.0936at Sea Area 1 237CS Not Detectable

Sampling Point 1 2011/3/23 11:20 131 9at Sea Area 2 N37ot et

Sampling Point2 2011/3/23 12:00 131Iat Sea Area 2 1370s

Sampling Point3 2011/3/23 12:37 1311at Sea Area 2 2 370s _

Sampling Point4 2011/3/23 13:32 1311 0.0866

at Sea Area 2 137 0.0160X 1 Sampled in Sea Area 1"X2 Radioactivity concentration limit in the air outside of the environmental supervised area (131j: 1OBq/m 3. 13Cs:30Bq/m 3)

Boldface is corrected on March 27(Mistake:Datas were plotted on the wrong place)

Each sampling point is indicated below

I

Sampling Point 1 370 39.3' N, 141' 24.0' Eat Sea Area 1Sampling Point 2 37 ' 35.0' N, 141' 23.9" E

at Sea Area 1Sampling Point3 370 30.2' N, 1410 23.9' E


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-1.31-1 7:IBq/'L ir1-6.54 B-q/1L

IBq/ L 112B/

I Bq!CL 24.1 =Bq/L

iBq/L 18.2 Bq/L

12.7TBq/L]

12.8: Bq/L.,


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Readings of Sea Area Monitoring March 24, 2011

rj'

Cs

0 20 40 60 80 100Undersea radioactivity Concentration(Bq/L)