ISSⅣNIRRADIOACTIVSIJRVEYI)
inJ

RadioactivitySurveyDat
inJapanⅣumber55
December1980

CONTEluTS
RadioactivitYOfMarineSamples

岬eriod:April.19丁9‑Mar叶198叫
I

MaterialsandMethods

I･1

fnstrumentaJAnalvsis
ASam匝s8C

Treatm帥tOfSampks………‥.…………………‥1‥‥..

D

App椚tuS………………………‥.‥‥‥..‥‥‥..‥‥‥‥‥‥･‥‥‥‥･‥‥‥‥‥‥‥‥...‥‥....‥‥.‥‥

Radio粥tiv叫Measリーem帥t‥‥‥‥‥‥.‥‥.‥..‥‥.‥‥‥‥‥‥

Ⅰ‑2

PrecisionCriteriaofMeasurement

Ⅱ

Resu帖ofAn叫鳴

Ⅱ‑1Samplescollect如‖nDec･.19丁8‑Aug..1鋸柑‥‥‥‥‥‥‥‥‥‥‥‥
Ⅱ‑2

SamplesColelct如=nO叫1卯9‑F由..1銅0‥……････…･..‥‥‥

Materialsand

1.

Methods

I‑1[nstrumentalAnaJysJS

Ⅰ‑2

hy useof Ge(Li)fora"samples(ref.Scienceand
Agency,1976).ArtificialRadionuc[idesGamma･rayPrecisionCriteriaofMI

A.Calculated

valuesgre召detecterwasapplied

detectionleveland

thosegreTechnoIogY

COunting

SPeCtrOmetryerror

werereportl

137Cs.54Mn,60coetc.wereidentifiedandtheircon･figures.Otherwise.thecentrationsweredetermined.

Precision

Cultured fish.catchedfish(importantspecies

werePOrtanCeaS
AIso

selectedin

consideration

theirim･ofeCOIoglCaJindicaterandnaturalresources.

theindicaterspecieswere

selectedin

considera･tionoftheirs[gnificantcharacteristicsinaccumulation
Oftheradionuclides.

B.TreatmentofSamples
FishesweredriedinaovenatlO50c.ashedina
furnaceat5000c.AshedsampJeswerecrusedandthe
fractiongreaterthanO.84mminsizewasremovedbya
Shieve.For
Water

WaS

moved.Then

sediment
thesampre,afteroff.gravels

Siphonedsediment

lO50c,CruShed,andshieved

wastoandsuF)ernatantSea

werere･ovenatshe"sdriedinaremovethefractiongreaterthan2mminsize.
C.RadioactlVItyMeasurement
RadioactlVlty

Of the sampIeswasmeasuredbv

Ge(Li)detecterfor20to24hours.Radioactiveback･groundwasmeasuredfor40to48hourswithinterva]
Ofoneweek.RadionuclideswereidentifiedbyanaJysIS

Whentheirexistencewasclear

B.ThetemporarYdetectiandindicaterspecies)andmarinesediment.lmportant

resuIIof eachOnty.Thevaluesfor54Mn.61

A.Samples

SPeCies

criterionfⅡ･ResultsofAnalysis

Ⅱ‑1SamplescollectedinDec･,1978‑Aug..1979
Participating
RegionalFisheries
ResearchInstituteTokaiku

Hokkaidoku

DateofSample

Collection

1978.12.20

1979.1.30

Date
LocationofMeasurement

Sakuraebi

Suruga‑Wan(Seregesteslucens)(OffYaizu)

Alaskapollack

Offyoich,(TheragratheJapanSea

Chalcogramma)

4302る′N;

Koraiebi

EastChinaSea(Penaeus

35040一‑50‑N;Orientalis)

120020一̲30′E

Koraiebi

EastChinaSea(Penaeus

35040‑‑50′町

1979.5.22

5.1±0.87

1979.5.22

12

1979.5.24

8.8±0.52

1979.5.24

4.5±0.89

1979.5.23

3.9±0.81

1979.5.23

8.る±0.65±0.8140050‑E
Seikaiku

Seikaiku

Nanseikaiku

Nanseikaiku

Nihonkaiku

1979.1.28

1979.1.28

1979.2.10

1979.2.10

1978.11.25

Orientalis)

120020′‑30′E

SardineTosa‑Wan(Sardinops

33020一軒melanosticta)

133045′E

SardineTosa‑Wan(EtrumeuS

33020･N;

micropus)

133045‑E

Sediment

JapanSea

1979.6.20

37015.3∫町
138003.5∫E
Nihonkaiku

1978.11.25

Sediment

JapanSea

1979.6.20

37015.3′N;
138003.5‑E
N山onkaiku

1978.11.25

Sediment

JapanSea

1979.6.21

37023.5‑N;138011.4･E
Nihonkaiku

1978.1l.25

Sediment

JapanSea

1979.6.21

37028.2･N;
138022.4′E
Nihonkaiku

1978.11.25

Sediment

JapanSea
37028.2′N二1979.6.21

Participating
ReglOnalFisheries

13つcs
DateofDateofSampleLocation

CollectionhNihonkaiku

1978.11.25(PCi/kg)
Sediment

JapanSea

1979.6.22

37051.8■N;138041.8■E
Nihonkaiku

1978.11.25

Sediment

JapanSea

1979･6･2238059.8′N;138049.0′E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979.6･22

38005.5′N;138059.5′E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979･6･22

38012.2‑Ni

139008.5′E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979･6･2238021.6′N;
139013.0′E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979.6･27

38021.6∫N;139013.0■E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979.6･27

38032.8′N;139014.5‑E
Nihonkaiku

1978,11.23

Sediment

JapanSea

1979,6･27

38032.8‑N;139014.5′ENihonkaiku

1978.11.23

Sediment

JapanSea

1979.7.2

38041.2′叶139019.0‑E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979.6.28

38048.0‑N;
139028.4′E
Nihonkaiku

1978.11.23

Sediment

JapanSea

1979.6･28

38058.0■N;139032.5■E
Nihonkaiku

1978.11,23

Biota

Mea乱Irement

ResearchInstitute

Sediment

JapanSea
38058.0■N;139032.5■E

1979･7･2

Participating
DateofReglOnalFisheries
ResearchInstituteHokkaidoku

SampleCollection

1979.2.9

DateofLocation
Measurement

Alaskapollack

Maehama,(TheragraIwanal,Chalcogramma)

theJapanSea

1979.6.18

1643001′N;
140024′E
Nanseikaiku

1978.12.19

Sediment

Tosa‑Wan

1979.7.23

33019.0′N;133031.5■E
NanSeikaiku

1978.12.19

Sediment

Tosa‑Wan

1979.7.23

33011.2‑叶133036.0′E
Nanseikaiku

1978.12.19

Sediment

Tosa‑Wan

1979.7.23

33008.6∫N;133037.0′E
Nihonkaiku

Seikaiku

Seikaiku

1979.5.17

1979.6.17

1979.6.17

SardineAround(Sardinops

Hajikisaki,Sado,melanosticta)

theJapanSea

Ki9uChiYe1lowSea(Pseudosciaena

32033′N;

1979.6.19･7.5±1.0manchurica)

122055′E

Kiguchi

EastChinaSea(Pseudosciaena32030‑‑40一叶manchurica)

122050′

Kiguchi

EastChinaSea(Pseudosciaena

32030一‑40‑N;

manchurica)

122050一

Mackerel

EastChinaSea(Pneumatoporus

25045･N;】apOnicus

122015′E

1979.9.6

9.7±0.7

1979.9.7

8.3±0.68

1979.9.6

6.5±粥

1979.9.7

7.9±0.51

1979.9.7

12±3.1

1979.9.6

5.2±1.7‑123000■E
Seikaiku

1979.6.17

̲123000′E
Seikaiku

1979.6.18

tapeinocephalus)
Seikaiku

1979.6.18

Mackerel

EastChinaSea(Pneumatoporus

25045‑N;】aPOnicus

122015′E

tapeinocephalus)
Seikaiku

1979.6.18

Mackerel

EastChinaSea(Pneumatoporus

25045′叶】aPOnicus

122015■E

1.2

Samplescollect別=nOct..19丁9‑Febり1980

Ⅱ‑213Tcs

Participating
DateofRegionalFisheries

DateSample

Locationof

1979.7.19

Biota(pCi/kg)
Sediment

EastChinaSea

1979.10.17

31030.0‑N;
128001.0■E
Seikaiku

1979.7.19

Sediment

EastChinaSea

1979.10.17

3lO31.2･N;
127000.0‑E
Seikaiku

1979.7.10

Sediment

EastChinaSea

1979.10.18

3lO29.3′N;
126000.7∫E
Seikaiku

1979.7.10

Sediment

EastChinaSea

1979.10.16

3lO29.9■N;
125001.4∫E
Seikaiku

1979.7.10

Sediment

EastChinaSea

1979.10.16

3lO30.0‑N;

123059.3′E
Hokkaidoku

1979.8.21

Sediment

OkhotskSea

1979.10.245016′N;
143020‑E
Hokkaidoku

1979.8.26

Sediment

OkhotskSea

1979.10.245020′町
142050‑E
Nihonkaiku

Tokaiku

1979.9.14

1979.7,5

Yellowtail

Tayu‑hama,(SeriolaNiigata‑Shi

quinqueradiata)

theJapanSea

Hiragashiradara

Mariana

1979.10.29

8.2±1.6

1980･1･29★★

1980.1.29★

1979.11.27★･★

Trench18009.4■N;148027.6′E
Tokaiku

1979.7.5

Makuhitode

ShikokuBasin★

30050.3′叶139055.3‑E
Nihonkaiku

1979.10.2700eChubailnMeasurement

Collection
ResearchInstituteSeikaiku

inYahiko‑tai
theJapanSea(Participating
DateofRegionalFisheries
ResearchInstitute

Nihonkaiku

DateofSampleLocation
Measurement

Co11ec也on1979.8.1

Sediment

JapanSea

1980.2.28

37056.5‑N;
137018.0′E
Nihonkaiku

1979.8.1

Sediment

JapanSea

1980.2.27

37056.5′N;
137018.0′E
Nihonkaiku

1979.8.1

Sediment

JapanSea

1980.2.27

38002.0■N;
13る058.1′E
Nihonkaiku

1979.8.1

Sediment

JapanSea

1980.2.27

38002.0′町
136058.1■E
Nihonkaiku

1979.8.1

Sediment

JapanSea

1980.2.27

37052.5■N;136044.2′E
Nihonkaiku

1979.8.1

Sediment

JapanSea

1980.2.27

37057.5′N;
136Q44.2‑E
Nihonkaiku

1979.8.1

Sediment

JapanSea

1980.2.27

37057.5′町
13る044.2■E
Nihonkaiku

1979.8.2

Sediment

JapanSea

1980.2.26

37032.0′N;
137006.2′E
N止10nkaiku

1980.8.2

Sediment

JapanSea

1980.2.26

37032.0■N;137035.5′E
Nihonkaiku

1980.8.3

Sediment

JapanSea

1980.2.26

37023.2■N;137035.5′E
Nihonkaiku

1979.8.3

Sediment

JapanSea

1980.2.26

37023.2一軒
137035.5‑E
Nihonkaiku

1979.8.3

Sediment

JapanSea

1980.2.26

37023.2･N;
137035.5′E
Nihonkaiku

1979.7.26

Sediment

JapanSea

37044.3′町

1980.2.26

137csParticipating
DateofReglOnalFisheries

Date
SampleLocation

CollectionofMeasurement

ResearchInstitute

Nihonkaiku(pCi/kg)
1979.7.7

Sediment

JapanSea

1980.2.22

38007.2′N;138050.2′E
Nihonkaiku

1979.7.23

Sediment

JapanSea

1980.2.22

38042.5∫N;139017.6′E
Nihonkaiku

1979.7.24

Sediment

JapanSea

1980.2.22

39004.5■N;139017.る■E
Nihonkaiku

1979.7.24

Sediment

JapanSea

1980.2.22

39034.2′叶13904l.6‑E
Nihonkaiku

1979.7.24

Sediment

JapanSea

1980.2.22

39023.0■N;139030.5′E
Nihonkaiku

1979.7.24

Sediment

JapanSea

1980.2.20

39023.0一軒
139030.5′E
Nihonkaiku

1979.7.24

Sediment

JapanSea

1980.2.20

39023.0′N;139030.5‑E
Nihonkaiku

1979.7.25

Sediment

JapanSea

1980.2.22

38038.3■N;139008.0′E
Nihonkaiku

1979.7.25

Sediment

JapanSea

1980.2.21

38032.5■N;138055.5′E
Nihonkaiku

1979.7.25

Sediment

JapanSea

1980.2.21

38025.0■N;138045.2′E
Nihonkaiku

1979.7.25

Sediment

JapanSea

1980.2.20

38015′叶138038′E
Nihonkaiku

inBiota1979.7.26

Sediment

JapanSea■,′ヽ0′ヽ′l̲▼

1980.2.20

lParticipating
Reg10nalFisheries

DateofDate
SampleLocation

CollectionofMeasurement

ResearchInstituteTohokuku

1979.9.16〜

1979.9.19

BonitoSanriku‑Oki(Katsuwonus

36Q55′

pelamis)1980.2.20

12±0.6

1980.2.4

22±1.7

1980.1.31

4.0±0.3

一38019‑N;
145033′
̲146057′E

Hokkaidoku

1979.11.5

Atkamackerel

Kamui‑Saki(Pleurogrammus

theJapanSeaazonus)

43020∫N;

Atkamackerel

Kamui‑Saki(Pleurogrammus

theJapanSeaazonus)

43020′叫140022‑E
Hokkaidoku

1979.11.5

140022′E●′一d㌔rヽ.

ロ