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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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
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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)