N将RADIOACTIVITSURVEY

DATinlapa

NUMBER
FEB.

1

RadioactivitySurveyD
inJapanNumber34
Feb.1972
Contents

DATA

OF

SURVEYROUTING

ExternalDosesData
ExternalExposureduetoNaturaIRadiation(〃∂r/0〃∂//〃∫r/r〜ノreOf斤∂d/0/ogわ∂/∫c由〃Ceざ)
Water

Data

TritiumLeve[ofRiverSystemandCoastalWaterinJapan(〟∂如〃∂//〃∫r血ノ拍0′斤∂d/0/qダ正∂/ふ:/e〃Ce∫)
Human
Human

Strontium‑90in

Data

DeciduousTeeth(〃∂血〃∂//〃㍍/r〟拍0′〃e∂/抽)
DATA

OF

THE

NUCLEAR

TEST

OF

THE

PEOPLE,S

REPUBLIC

O;

MeteoroIoglCalData

GrossBeta･RadioactivityinUpperair(12th)(月eぶe∂化わ∂〃dJ)eレe/叩me〃r〃.ロリJ叩∂〃βeね〃∬月ge〃Cyト…･…･……･
GrossBeta･RadioactivityinRainandDryFalIout(13th)(〟加わ〃∂//〃∫〟餌ね0′斤∂〟0/呼止∂/ぶc由〃CeS)
GrossBeta･radioactivitvinRainandAirbornDust(13thand14thExternalDose

Data

ExternalExposureduetoNaturalRadiation(肋血〃∂//〃∫〟餌招扉助血/叩正∂/立由〃Cg∫)
Were

SurVeymeterfield survey

Aradiation

hasof

exposure

due

rates

to

naturalbeenconductedthro.ughouttheHokkai･

Stationsandtheirreadin!
reIationshipbetweenthel

dodistrictofJapandur[ngJune1971.

Practica"yThesituationoftheHokkaidodistrictinJapanis

Were

Figurel.DistributionofobservedJocations

ShowninuSeddirect

thethereducedinto

COrreSPOnding

inthedistrictisindicatedinFigure2.lneachIocation.

PrOPOrtion.Systematicefromreading

one

tofive sites contaInlng

atIeast5stations

Weremadethere.Atota(of81sitesweremeasured.
Observationswere

madeWithin±3.5%(standard(us■ng a SPhericalioniza‑

errorofthesurvey･meterchamberand severaJscienti)lation
surveymeters.
ThesphericalpJasticionizationchamberofwhichinner

for6uR/hr)
Measurementsinopt

respectively200mmand3mm(acry)ate)hasadequatesensitivityforfield
SurVey.The
apparatus,butitis
OnJy

waschamberasuseddifficu[t totypesmeterstandardofofwasusedfora

reguJarsurveymeters,theonedevices.ln12

sites,bothTablel.

thechamberandcontribution

Gammaィay

exposuleachJocation
exposure

PrefectureoftheHokkai(Gamma‑rayExpo>...eRatesduetoNaturalRadiationin
Oftheof

WaSVerySJight.

POPuIation
thegrounterrestriaJradiation,!

thatthetioninWitha2LL4)X2"NaI(Tl)scintiJfatorandtheotherwitha3"￠x3"Nal(Tl)scintiJIator,WereuSedasauxiliary

theaboveexposurerates(pR/hr)肌asalllocations

surveymeterwith

Nal(TJ=′′￠xl''scintillator
measurements･Twoaobservebytheapparatus,SOthata

error(random)

resF)eCtiveJywithin±6%

tion

diameterandwaIIthicknessarer

fro

toit

Hokkaidodistrict‑June1971

byS.Abe,K.Arai.Y.lnoueandK.Fujimoto(〃占r/0/1∂//〃∫折〟托0/斤∂鱒0/og正∂/∫c由〃Ce∫〉adue

Sub
Prefecture

Sorachi

Shiribeshi

HiyamaOshimaIburi

Location

Tokachi

KusbiroNemuro(〃R/hr)

Apparatus*
mea

llTakikawa

9.5

12Bibai

9.2

C

13Iwamizawa

9.5

C

14

Ashibet

8.6

C

150ta

7.3

C

16Kyowa,Tomari

9.3

C

17

Shimamaki

8.4

C

18

Kutchan

7.6

C

19Kitahiyama

9.5

C

20

8.O

EsashiCC

21Matsumae

9.822Kikonai

8.3

C23

Hakodate

7.8

C

24

Mori

5.3

C

25

Yakumo7,1C

26

0shamambe

8.2

C

27

Abuta

5.4

28

Muroran

7.O

29

Noboribetsu

6.1

C

30

Tomakomai

9.3

C

6.O

CC

31Mukawa
HidakaExposureRate

32

Shizunai

33

Urakawa

A,C

C
A,C

34

Erimo

35

Kamishihoro

7.9

36

Shintoku

9.2

37

0bihiro8.4

38

Sarabetsu

6.6

C

39

Hiroo

8.2

C

40

A血oro

8.1

CA,C

C

41Akan5.9

420nbetsu

6.6

43

Kushiro7.5

44

Akkeshi

8.9

C

45Teshikaga

5.5

C

46

Shibetsu

5.0

A,C
C
A,CTable2

PopulationExposureduetoNaturalRadiation
inEachSub･districtoftheHokkaidoDistrict

byS･Abe,K.Arai.Y.lnoueandK.Fujimoto
川ね血〃∂//〃血〟お0′/ねdb/喀血/立由〃CedExp∝u陀Rateミ謎芳rdDeviation
P買で謡

D由trict7.4±0.89.4±1.2
7.7±0.9
Hokkaido8･3±1･3

5,184
Fig.11970NationalCensus

FlgurelTheSituationofHokkaidoDistrictinJapan

140030
■14

｢‑!

山‡lH!

HH

章

uHn

H
四‑̀十一一一‑ ̀̀一
▲ ̀nH
Hu

Ⅷ‑

Water
TritiumRiver

Leve[ofSystemandData

CoastalWaterinJapan(肋〟如∂//〃∫〟r〟招扉β∂血励/企由〃Ce∫)Todetermine

thecon･environmentaltritiumThe

data for the!

CentrationinJapan,WaterSamPlesofrivers.streames,

October1970toS叩抽

POndsand

3and4theseresuItssug!

nuc[earcoastwerecoIIectedinthevIClnltyOfthepower

StruCtion

reactorin

Carriedshowlngin
byIiquidout

emulsion

scintiJlator

operation
figurescintilJation
system

under

con･

WaterisIaidontheran!

anaIyses

wereandinriversystemfrom

and3.The

counting

afterelectrolytlC

us.ng
enrich･ment.

Table3.

TritiumContentofCoastalWater.Oct.1970toJun.197
byY.lnoueandY.Kasida.

(〃∂如〃∂//〃∫〟と〟拍0′β∂〟8/og正∂/∫c由〃Ce∫I
Location

1970

NIIGATAISHIKAWA

FUKUI

1971

HOKKAIDO

Date

Kakumihama

21,Oct.

Kashiwazaki

22,Oct.

Shiromaru

25,Oct.

Akazumi

26,Oct.

Fukuura26,Oct.

NiuBay26,Nov.

UrazokoBay

29,Oct.

Takahama

30,Oct.

Hamamasu

5,Jun.

Tomari4,Jun.

Horikabu

4,Jun.

Uta]lma

3,Jun.

Table4.

TritiumContentofRivers.Streams.LakeandPonds.
Oct.19TOtoSept.1971.
byY.lnoueandY.Kasida.
(〟∂血〃∂//〃∫f〟〟ね0′斤∂㌦0/og正∂/Sc由〃Ceぶ)
Location

1970
NIIGATA

Shinanogawa

R(Ojiya)S,(Kakumi)
S.(Shiromaru)

21,Oct.

Takamakigawa

S.(Tsuruga)

29,Oct.

ChonoikeP.(Tsuruga)
S.(Tsuruga)

29,Oct.

S.(Mihama)S.(Mihama)

26,Nov.

ISHIKAWA
FUKUI

Sekiyagawa
Ochiaigawa

Majogawa

21,Oct.
29,Oct.

29,Oct.
26,Nov.

1971
HOKKAIDO
Uta】lmagaWa
Ribetsugawa

Ishizakigawa

S.(Hamamasu)

5,Jun.

S.(Tomari)
S.(Utajima)

4,Jun.

S,(Kitahiyama)
S.(Ishi2:aki)S.(Matsumae)

3,Jun.

3,Jun.
2,Jun.
2,Jun.

FUKUSHIMA

Sakashitadamu

S･(Okuma)

16,Jan･

IBARAGI

HinumaL‑

24.Aug.

Hinumagawa

R.

25,Aug.

Nakagawa

R,(Nakagouchi)
R.(Minatooohashi)
S,(Kkanba)

25,Aug.

Kujigawa
Kujigawa

R･(Sakakibashi)

24,Aug.

R･(Kujioohashi)

24,Aug.

Akoglura

P･24,Aug･ShimobatameikeP.(Genkai)

9,Apr.

Hattagawa

S.(Genkai)

9,Apr.

Nakagawa
Shinkawa

FUKUOKA

3,Sept.
24,Aug.

Fig･3･SamplingLocationsofRiverSystemandCoasta=〃aterinJapan.

1.Hamamasu

HOKKNDO

11.KakumihamaNHGATA

2.TomariHOKKAIDO

12.KashiwazakiNHGATA

3.Horikabu

HOKKA(DO13.ShiTOmarulSHIKAWA

4.UtajimaHOKKAIDO

14.FukuuraISHIKAWA

5.IshizakiHOKKAJDO

15.AkazumjISHIKAWA

6.MatsumaeHOKKAIDO

16.UrazokoBaYFUK川7.OkumaFUKUSHIMA

17.NiuBavFUK川8.TokaiIBARAK(

18.Takahama

9.NakaminatoIBARAKJ

19.GenkaiFUKUOKA

FUKUJ

lO.OarailBARAKI

(∪519

Data

Human

Strontium･90inHumanDeciduousTeeth(肋如〃∂//〃㍍〟〟抒〆肋∂仙)The

NationalInstituteof

Strontium･90contentin
anindex

theof

HeaIthHumanofaccumulation

chiIdren.since1961.
About92,400humanco11ected from various

hasdetermined

wasDistrict

Kanto
deciduousteeth
areainJapansufficient

arefor ten

years･

Figure7

werebeto

shodulTherisuItsobtained

havebeentheTokaiDistrict

areFigure5.

TabIe7and

SubjectedtotheanaIysts･
sampIeTheresultsofStrochiIdren born during tl

radioactivityin

TeethofchiIdrenin3areasasshowninOnebornbetween1958andDeciduousTeeth.as

FigM

theperiod1957to196:

of50to70

incisorsandof30to50molarsforteethfromchildren

Table5.90srinHumanDeciduousTeethofChiflborninKanto

District‑1648to196
byT.Naga[andT.Ishii(〃∂〟0〃∂//〃∫〟山拍0′〃e∂/r/り(p(BirthYear

1 凸7

Breast0.04±Fed0.01(1)0.01(1)

190.17±0.04(2)190.18±

1 ∩70.23±

190.26±190.30±48495051525354

0.07±

1 n7

MixedFed0.05(3)0.04(7)0.03(5)0.19±0.03(3)0.240.04(13)0.45±0.06(4)±0.09(7)0○●㊥B r eaS

Fe d

BO 鵬

FedM .‑ dFed

60?∈⊃芋uO占SヽTable6.90srinHumanDeciduousTeethorChildren
borninTokaiDistrict‑1950to1964‑

byT.Na9alandT.lshii

く他ね〃∂//〃∫打餌ね0/〃e∂/抽)(pBirthYear

BreastFed
0･16±
0.08±0･11±

0.22±
0.32±0.60±0.88±0.99±1.64±
1.63±1.87±±

4.16

±0.43

±0.03(1)0.02(1)l●±1■12±1.11±1･64±
2.36±2.21±1.74±2.90±4.89±7.56±0.09(1)0.08(2)0.14(4)0.19(4)2 20.18(6)20.10(5)0.17(4)0.57(4)0.31(3)

2

■

2

̲33
610●

●

■

580

2.90

0.29±

8.1

1･61±

0.02(1)0.02(1)0.01(1)0.02(1)0.08(3)0.07(2)0.07(5)0.15(6)0.26(6)0.13(10)0.18(10)0.14(6)0.15(7)0.21(7)0.26(4)

7.1

1･62±

MixedFed■

Numberofsamplesanalyzedinparenthes′′′′′′/.′虚ア/Table7.90srinHumanDeciduousTeethofChildren
borninHokurikuDistrict‑1957to1963‑
byT.Na卿l帥dT.Ishii(〟bぬ〃〟/〃∫〟払お0′〟e∂/納)(pCi/9CaBirthYear

BreastFed

12111213●

●

■

̲±±●

±■

0 7 3 (2)2.71±

0 3 0 (2)3.63±0.13(5)0.17(5)0.02(2)0.03(2)

2.46

̲

2.47
3｡03
4.92

0.06(1)0.10(1)0.17(3)0.18(3)0.19(3)0.12(1)

Numberofsampleanalyzedinparentheses.

O●㊨6Bottle

0 0 9 (1)

̲±MixedFed̲

+一+一十一+一11■063619糾972582

1959595%%9696

1l+‑+‑±1

BreastFed
BottleFed
M･XedFed2.32±02.32±03.58±5.83

0±00?2⊃一lUO主S

Fig.7

SamplingLocations
Tokyo,KANTO

D[STRICTNagoya,TOKAJDISTRICT
Toyama,HOKUR]KU

DISCTICTData

Test of theof Nuclear
RepublicofChina

Pe●MeteorologlCalData

12th

Nuclear

Test

GrossBeta･RadioactivityinUpperAir(伽湖〝カ即d伽作伽爪印r〝β.′J如∂〃加ゎ〃∬月卵耽′)Scince1960,ResearchJapan

Of theand DeveJopment
DefenseAgencyhasmeasuredtheradioactivity
radioactive debrisintheJower)eveJof

H.8リ

SPeCialmeasurementswere

OteaChcollectedsampted
Cha咽e.andwasinalmost5
ResuJtsobtainedbytl

StratOSPhereandtropopauseatregu)arintervals,uS.ng
aircraftswithair･borndustsamplerunderthewing･
Just after the12th
NucJear
Test of China,theTable8‑

FigurcOfJapanasshown
theShowninTable8.

Grossβ･aCtivityinUpperAir

9yK･Kenmochi.S･lgarashi,K.Kitazawa.T.Matsumura.
M.Onuma.T.Akimoto

岬e館∂化わ&伽作/叩爪印rI柏.Jわ∂〃加ゎ〃館月卵化〃

SamplingArea
NoathArea

MiddleArea

AltitudeNov.19,18:07

37,000
20:35

Nov.20.

21:28

37,000

23:12

37,00001:27

37,000

01:40

30,0000.4★

Figure8.SamplingAreasofJapan℃⊂=WESTERN

F‖ghtcourseA

F‑ightc｡｡,SeB

AREA
013thNuclear

Test

GrossBeta‑RadioactivityinRainandDryFa(Jout(仙血〝∂//〃∫血ノ抒〆伽dわ/励/虎/銅C珂Daily

raindryand

fallout

samplescoun‑

wereaTetinuaustyfrom(9a.m.tothenext9a.m.)coJ(ectedontheroofofthebuiIdingRadio]og■CaISciencesin

of

lived

NationaJJnstituteofChiba cJty,tOdeterminethe

Better･aCtivity

M=ercounter

wasmeasured

withusingthestandardofUranium

arraysamplespectrum
Sampledofthesanmi暮k atanaIyzedconcern[ngradi(OxideShowninTab[elO.
Samptinglocation

Table9"暮n thewereGeiger‑

川308).
areshownin

radionuclides

SCOPicmethodusingNal(grossBeta･aCtivity.

GrossResuItsobtaineddurir

twoFigure川.
ofthelOth‑14th,Jan･,1972

Neptunium･239andTechnetium･99mandothershort
TabJe9･Grossβ‑radioactivityinRainandDryFaHout
COIJectedinatrayatChibaChy‑8thto14thJan.,1972‑
byK.Kamada.M.Arai,M.YukawaandM.Saiki(〟∂わ〃∂//〃∫r/r〟始0/鮎dわ/ogた∂/∫c融ce∫ノ
DateofSampling

DateofDetermination

Grossβ一aCtivity(mCi

8〜9Jan.,1972

9Janリ1972

0 0 1

9〜10Jan.,1972

10Jan.,1972

0 02

10〜11Jan.,1972

11Jan.,197237

11〜12Janリ1972

12Jan.,1972

28 2

12〜13Jan.,1972

13Janリ1972

9 913〜14Jan.,1972

14Janリ1972

9 9‑●(0‑‑●●TablelO･RadioactivelodineinYMilkco"ectedinChibaCity‑9thto14thJan.,1972‑
byH.Kamada.G.Tanaka.H.KawamuraandM.Sa伸∂わ〃∂//〃∫折〟托0′β∂㌦0/og血∂/ぶc/如ce∫)
Concentradon↓d2禁【Uト∈のの↓↓↓㌻t･qZ∈ト:｡≡;↓㌃:･qZトか↓一MM‑･コ〇三+品言【むU≡｡d2…

aト?【【｡d2仇:むU:t｡dZ票M↓↓.U説000､の｣鼠βU⊃OU

1400℃●●GrossBeta･radioactivityinRainandAirborneDust

的卵〃肋加仰旬ゾ由川卵〃C′)
SurveyofgrossBeta･radioactivityinrainandair･

therefore the magnitudc
beeninlowenergyrange.
Thedataof卯OSS8ebornedusthasbeenconductedbyuslngthedatafrom
13stationsofJapan

MeteorologicaIAgencYdlOWnin

Figure川.

JanuarY.19丁2aresh仙川

Theproceduresofsamplingandcountingaresame
describedon
No.50fthispublicationseries.

Of radioactiv和in rain
those normaIconditions
Period of12th‑14th.ノbornedustshowedslightasthoseThe13thnucleartestofthePeopIe'sRepubIicof
China

wascarried out

on7thJanuary,1972.1tisbeIievedthatthetestareaistheneighborhoodofLake

LopNor(400N,900E),about4000kmwest･nOrthwest

ltisestimated fromradioactive debries emitl

OfTokyo.

Japan

disturbance

InJapanabnormalmicrobarographic

dayandahaone

altitude ofaboutlO
Figure‖.

an

Whichwascausedbythenucleartestwasnotobserved,Tat)lell･GrossBeta･RadioactivityinRain.Jan.9‑14.1972
CompiledbyN.Banno.H.HondaandH.Ueno(止岬∂〃〃e拇0√0/呼止∂/4卿関山
Jan.1972
Station

910Wakkanai■コ̲[∴●Kushiro一■

SendailAbta〓〓■

l0･00･0

●

6

̲

03
■

●

●●0 0■こ70●

L13･90･65･00･0

〓

■

■

〓

コ00000

一Wajima■■〓■

一Tokyo■〓●l‑0･69801･32･60･10･91･29･O‑0･65‑00･00･00■50･0Sapporo

コ〓hbl012.Gr帽8ぬ･R●di蜘血和inDu丸血鳳8一川.1卯2CompiledbYN.Banno.H.HondaandH.Ueno(加納お㈹旬由/月卿CγI

S也don9鮎p匹rO

0 20 l0 1

0 10 0王knd由

0 1

0 10 40 50 7Tokyo

0 40 60 50 70 4

Osab00 8

1 10 20 2

Fukuola0

1 40 80 40 10

●

●

●

●

●

/Figurell.

●

●

8一b/＼

●

●

/

■

●

●

●

7＼TheMeteoro10glCalTrajectoryatthetime
whenthe13th

NuclearTestwascarried

OUtbYthePeople'sRepublicofChina

J….丁,1172llZ(Pr●叫叩○§●)

■

̲

●

●

■■

●

●

■

●

●

14thTestNuclear

The14thnucfeartestofthePeopIe'sRepublicof

ChinaMarch′1972.Itis
carried out on18th
believedthatthetestareaistheneighborhoodofLake
wasOVerthetheexplosion

March.1972areSIight

disturbancewasabnormalmicrobarographic

radioactivityln
thosecausedbythenucIeartestwasobservedat

SeVerafstations,aSShowninTat)le13andFigure13.
Jtisestimatedfrom
theairmasstrajectorythat
radioactive

debries

thetroposphere

emittedinto

Table13.TheMicrobarographic

wasobserved

radioactivity]nairbornet

23rd.
Disturbancesdueto

しねp∂〃〃e托OrO/qgわ∂/月ge〃Cy)

Wakkanai
KushiroAmplitude

Period(mb)

(min)

%?

09:50

0.1?
1Time

(G.M.T.)E14lO41′)(N42059′,E144024･)

?

Akita

(N39043′,E140006′)

09‥36

0.0

Wajima(N37023′,E136054･)

09=26

Tokyo

(N35041′,E139046･)

Yonago(N35026′,E133021′)

?

?

ウ?

?

09:17

0.1?

?

?

Murotomisakai(N33O15′,E134011･)
Kagoshima(N31034･,E130033･)?

notnormalconditionscthat

ccshownrain

the14thNuclearTestofthePeopJe'sRepublicofChina.
18thMarch.1972
CompiledbyN.Banno,T.HondaandH.Ueno

StationaThedataofgrosst)et;

O一丁okyo.

thethrough(300mbleveI).asshownirLopNor(400N.90OE),about4000kmwest･nOrthwest

Whichpart olnorthern?:Obscre

TabIe14.GrossBeta･RadioactivitYinDust,19th‑25thMarch.1972
CompiledbyN.Banno,H.HondaandH.UenoatTable15.GrossBeta･Radioactiv叫inRain,20th‑25thMarch.1972
CompiledbYN.Banno.H.HondaandH.Ueno(止岬a〃〟bお0何/呼止∂/4卵叩γI
Upperrow‥

Concentration(pC
Deposition(m(Lowerrow:MAr.1972
Stadon

2021

23

240.0

Wakkanai

0.0■

3004

Sapporo̲■

1003

Kushiro

3.2
6.4

一一●

Sendai00 00■00 00■

̲●

●■一■

00
●

●

●

●

●

00■l̲

●

●

●

●

Observationisnotcamiedoutt*CauSethedai1yrainhl
amountislessthanlmm.

■00
00

■

■00

■

一10

■

1100

●

■00 00

●

0000

02

100000

00
0000
00

一●

●

0000

00

00

■00
00

0100

00

10

̲̲

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